./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product37.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 577813f622c64f907053c4832aa01617433208d6dc94051427e21d3f2bb7bdeb --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:36:55,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:36:55,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:36:55,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:36:55,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:36:55,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:36:55,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:36:55,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:36:55,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:36:55,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:36:55,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:36:55,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:36:55,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:36:55,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:36:55,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:36:55,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:36:55,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:36:55,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:36:55,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:36:55,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:36:55,770 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:36:55,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:36:55,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:36:55,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:36:55,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:36:55,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:36:55,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:36:55,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:36:55,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:36:55,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:36:55,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:36:55,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:36:55,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:36:55,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:36:55,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:36:55,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:36:55,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:36:55,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:36:55,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:36:55,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:36:55,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:36:55,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:36:55,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:36:55,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:36:55,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:36:55,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:36:55,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:36:55,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:36:55,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:36:55,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:36:55,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:36:55,810 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:36:55,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:36:55,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:36:55,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:36:55,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:36:55,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:36:55,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:36:55,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:36:55,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:36:55,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:36:55,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:36:55,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:36:55,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:36:55,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:36:55,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:36:55,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:36:55,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:36:55,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:36:55,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:36:55,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 577813f622c64f907053c4832aa01617433208d6dc94051427e21d3f2bb7bdeb [2022-07-22 17:36:56,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:36:56,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:36:56,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:36:56,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:36:56,038 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:36:56,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2022-07-22 17:36:56,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10af73c07/21d004545ae74575a0b7e1f208d4bb06/FLAGf0f478a70 [2022-07-22 17:36:56,467 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:36:56,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2022-07-22 17:36:56,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10af73c07/21d004545ae74575a0b7e1f208d4bb06/FLAGf0f478a70 [2022-07-22 17:36:56,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10af73c07/21d004545ae74575a0b7e1f208d4bb06 [2022-07-22 17:36:56,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:36:56,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:36:56,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:36:56,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:36:56,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:36:56,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa19c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56, skipping insertion in model container [2022-07-22 17:36:56,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:36:56,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:36:56,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c[13023,13036] [2022-07-22 17:36:56,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:36:56,791 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:36:56,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c[13023,13036] [2022-07-22 17:36:56,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:36:56,874 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:36:56,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56 WrapperNode [2022-07-22 17:36:56,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:36:56,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:36:56,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:36:56,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:36:56,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,929 INFO L137 Inliner]: procedures = 53, calls = 153, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 239 [2022-07-22 17:36:56,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:36:56,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:36:56,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:36:56,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:36:56,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:36:56,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:36:56,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:36:56,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:36:56,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (1/1) ... [2022-07-22 17:36:56,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:36:56,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:36:57,007 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) [2022-07-22 17:36:57,026 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 [2022-07-22 17:36:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:36:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-22 17:36:57,037 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-22 17:36:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-22 17:36:57,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-22 17:36:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:36:57,037 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:36:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:36:57,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:36:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-07-22 17:36:57,038 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-07-22 17:36:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-22 17:36:57,038 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-22 17:36:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:36:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-22 17:36:57,038 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-22 17:36:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:36:57,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:36:57,107 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:36:57,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:36:57,309 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:36:57,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:36:57,313 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 17:36:57,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:36:57 BoogieIcfgContainer [2022-07-22 17:36:57,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:36:57,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:36:57,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:36:57,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:36:57,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:36:56" (1/3) ... [2022-07-22 17:36:57,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae17e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:36:57, skipping insertion in model container [2022-07-22 17:36:57,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:56" (2/3) ... [2022-07-22 17:36:57,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae17e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:36:57, skipping insertion in model container [2022-07-22 17:36:57,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:36:57" (3/3) ... [2022-07-22 17:36:57,325 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2022-07-22 17:36:57,335 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:36:57,335 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:36:57,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:36:57,400 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@216edb8b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@587a64cf [2022-07-22 17:36:57,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:36:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 64 states have (on average 1.390625) internal successors, (89), 72 states have internal predecessors, (89), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-22 17:36:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-22 17:36:57,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:57,415 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] [2022-07-22 17:36:57,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash -706687540, now seen corresponding path program 1 times [2022-07-22 17:36:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:57,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572969457] [2022-07-22 17:36:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:36:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:57,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572969457] [2022-07-22 17:36:57,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572969457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:57,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:57,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 17:36:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108400493] [2022-07-22 17:36:57,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:57,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:36:57,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:36:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 17:36:57,610 INFO L87 Difference]: Start difference. First operand has 85 states, 64 states have (on average 1.390625) internal successors, (89), 72 states have internal predecessors, (89), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:57,645 INFO L93 Difference]: Finished difference Result 162 states and 221 transitions. [2022-07-22 17:36:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:36:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-22 17:36:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:57,654 INFO L225 Difference]: With dead ends: 162 [2022-07-22 17:36:57,654 INFO L226 Difference]: Without dead ends: 76 [2022-07-22 17:36:57,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 17:36:57,661 INFO L413 NwaCegarLoop]: 107 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, 107 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 [2022-07-22 17:36:57,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:36:57,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-22 17:36:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-07-22 17:36:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 64 states have internal predecessors, (75), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-22 17:36:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2022-07-22 17:36:57,700 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 23 [2022-07-22 17:36:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:57,700 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2022-07-22 17:36:57,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2022-07-22 17:36:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 17:36:57,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:57,703 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] [2022-07-22 17:36:57,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:36:57,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash -495697199, now seen corresponding path program 1 times [2022-07-22 17:36:57,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:57,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328018683] [2022-07-22 17:36:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:57,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:36:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:57,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:57,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328018683] [2022-07-22 17:36:57,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328018683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:57,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:57,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:36:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263183022] [2022-07-22 17:36:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:36:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:36:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:36:57,803 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:57,829 INFO L93 Difference]: Finished difference Result 118 states and 152 transitions. [2022-07-22 17:36:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:36:57,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-07-22 17:36:57,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:57,831 INFO L225 Difference]: With dead ends: 118 [2022-07-22 17:36:57,831 INFO L226 Difference]: Without dead ends: 67 [2022-07-22 17:36:57,831 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 [2022-07-22 17:36:57,832 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 154 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 [2022-07-22 17:36:57,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 154 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:36:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-22 17:36:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-07-22 17:36:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 58 states have internal predecessors, (68), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 17:36:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2022-07-22 17:36:57,838 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 24 [2022-07-22 17:36:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:57,838 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2022-07-22 17:36:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2022-07-22 17:36:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 17:36:57,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:57,842 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] [2022-07-22 17:36:57,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:36:57,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:57,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1824556621, now seen corresponding path program 1 times [2022-07-22 17:36:57,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:57,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127526312] [2022-07-22 17:36:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:57,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:57,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127526312] [2022-07-22 17:36:57,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127526312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:57,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:57,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:36:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147556890] [2022-07-22 17:36:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:36:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:36:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:36:57,909 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:57,916 INFO L93 Difference]: Finished difference Result 127 states and 166 transitions. [2022-07-22 17:36:57,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:36:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-22 17:36:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:57,919 INFO L225 Difference]: With dead ends: 127 [2022-07-22 17:36:57,920 INFO L226 Difference]: Without dead ends: 67 [2022-07-22 17:36:57,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:36:57,921 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 84 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 [2022-07-22 17:36:57,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:36:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-22 17:36:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-07-22 17:36:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 58 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 17:36:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-07-22 17:36:57,930 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 28 [2022-07-22 17:36:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:57,930 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-07-22 17:36:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-07-22 17:36:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 17:36:57,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:57,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:36:57,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -412666649, now seen corresponding path program 1 times [2022-07-22 17:36:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:57,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125509843] [2022-07-22 17:36:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:36:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 17:36:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:58,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125509843] [2022-07-22 17:36:58,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125509843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:58,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:58,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:36:58,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139721018] [2022-07-22 17:36:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:58,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:36:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:36:58,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:36:58,035 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 17:36:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:58,199 INFO L93 Difference]: Finished difference Result 198 states and 251 transitions. [2022-07-22 17:36:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:36:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2022-07-22 17:36:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:58,201 INFO L225 Difference]: With dead ends: 198 [2022-07-22 17:36:58,201 INFO L226 Difference]: Without dead ends: 138 [2022-07-22 17:36:58,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:36:58,203 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 149 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:58,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 272 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-22 17:36:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2022-07-22 17:36:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 100 states have (on average 1.26) internal successors, (126), 107 states have internal predecessors, (126), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-22 17:36:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 161 transitions. [2022-07-22 17:36:58,214 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 161 transitions. Word has length 38 [2022-07-22 17:36:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:58,214 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 161 transitions. [2022-07-22 17:36:58,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 17:36:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 161 transitions. [2022-07-22 17:36:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 17:36:58,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:58,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:58,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:36:58,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1939232781, now seen corresponding path program 1 times [2022-07-22 17:36:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360955949] [2022-07-22 17:36:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:58,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:36:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:58,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:58,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360955949] [2022-07-22 17:36:58,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360955949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:58,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:58,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:36:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519574985] [2022-07-22 17:36:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:36:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:36:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:36:58,284 INFO L87 Difference]: Start difference. First operand 132 states and 161 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:58,395 INFO L93 Difference]: Finished difference Result 279 states and 347 transitions. [2022-07-22 17:36:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:36:58,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-07-22 17:36:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:58,397 INFO L225 Difference]: With dead ends: 279 [2022-07-22 17:36:58,397 INFO L226 Difference]: Without dead ends: 154 [2022-07-22 17:36:58,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:36:58,398 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 134 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:58,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 266 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-07-22 17:36:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2022-07-22 17:36:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 109 states have internal predecessors, (128), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-22 17:36:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2022-07-22 17:36:58,407 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 42 [2022-07-22 17:36:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:58,407 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2022-07-22 17:36:58,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2022-07-22 17:36:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 17:36:58,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:58,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:36:58,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash -361589809, now seen corresponding path program 1 times [2022-07-22 17:36:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:58,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068923359] [2022-07-22 17:36:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:36:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:58,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:58,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068923359] [2022-07-22 17:36:58,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068923359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:58,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:58,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:36:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897519158] [2022-07-22 17:36:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:36:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:36:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:36:58,451 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:58,561 INFO L93 Difference]: Finished difference Result 269 states and 331 transitions. [2022-07-22 17:36:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:36:58,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-07-22 17:36:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:58,565 INFO L225 Difference]: With dead ends: 269 [2022-07-22 17:36:58,565 INFO L226 Difference]: Without dead ends: 142 [2022-07-22 17:36:58,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:36:58,570 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 56 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:58,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 337 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-07-22 17:36:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2022-07-22 17:36:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 112 states have internal predecessors, (131), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-22 17:36:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 166 transitions. [2022-07-22 17:36:58,585 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 166 transitions. Word has length 42 [2022-07-22 17:36:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:58,585 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 166 transitions. [2022-07-22 17:36:58,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 166 transitions. [2022-07-22 17:36:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 17:36:58,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:58,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:58,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:36:58,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1121584331, now seen corresponding path program 1 times [2022-07-22 17:36:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:58,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244542480] [2022-07-22 17:36:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:36:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:58,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:58,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244542480] [2022-07-22 17:36:58,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244542480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:58,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:58,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:36:58,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749912184] [2022-07-22 17:36:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:58,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:36:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:36:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:36:58,652 INFO L87 Difference]: Start difference. First operand 137 states and 166 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:58,806 INFO L93 Difference]: Finished difference Result 387 states and 491 transitions. [2022-07-22 17:36:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:36:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-07-22 17:36:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:58,807 INFO L225 Difference]: With dead ends: 387 [2022-07-22 17:36:58,808 INFO L226 Difference]: Without dead ends: 257 [2022-07-22 17:36:58,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:36:58,809 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 185 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:58,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 288 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-22 17:36:58,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2022-07-22 17:36:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 189 states have (on average 1.2433862433862435) internal successors, (235), 200 states have internal predecessors, (235), 30 states have call successors, (30), 28 states have call predecessors, (30), 29 states have return successors, (45), 30 states have call predecessors, (45), 30 states have call successors, (45) [2022-07-22 17:36:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2022-07-22 17:36:58,831 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 42 [2022-07-22 17:36:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:58,832 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2022-07-22 17:36:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2022-07-22 17:36:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 17:36:58,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:58,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:36:58,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1480072959, now seen corresponding path program 1 times [2022-07-22 17:36:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587939512] [2022-07-22 17:36:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:36:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:36:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:58,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:58,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587939512] [2022-07-22 17:36:58,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587939512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:58,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:58,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:36:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454993310] [2022-07-22 17:36:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:36:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:36:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:36:58,899 INFO L87 Difference]: Start difference. First operand 249 states and 310 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:36:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:59,076 INFO L93 Difference]: Finished difference Result 739 states and 950 transitions. [2022-07-22 17:36:59,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:36:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-07-22 17:36:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:59,079 INFO L225 Difference]: With dead ends: 739 [2022-07-22 17:36:59,079 INFO L226 Difference]: Without dead ends: 497 [2022-07-22 17:36:59,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:36:59,080 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 135 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:59,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 325 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-22 17:36:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 477. [2022-07-22 17:36:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 358 states have (on average 1.2094972067039107) internal successors, (433), 379 states have internal predecessors, (433), 60 states have call successors, (60), 56 states have call predecessors, (60), 58 states have return successors, (95), 60 states have call predecessors, (95), 60 states have call successors, (95) [2022-07-22 17:36:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 588 transitions. [2022-07-22 17:36:59,109 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 588 transitions. Word has length 44 [2022-07-22 17:36:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:59,111 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 588 transitions. [2022-07-22 17:36:59,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 17:36:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 588 transitions. [2022-07-22 17:36:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 17:36:59,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:59,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:59,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:36:59,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 934540643, now seen corresponding path program 1 times [2022-07-22 17:36:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:59,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632132042] [2022-07-22 17:36:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:36:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 17:36:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:59,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:36:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:36:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:59,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632132042] [2022-07-22 17:36:59,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632132042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:59,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:59,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:36:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847138311] [2022-07-22 17:36:59,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:59,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:36:59,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:36:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:36:59,216 INFO L87 Difference]: Start difference. First operand 477 states and 588 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:36:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:59,450 INFO L93 Difference]: Finished difference Result 499 states and 617 transitions. [2022-07-22 17:36:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:36:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2022-07-22 17:36:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:59,453 INFO L225 Difference]: With dead ends: 499 [2022-07-22 17:36:59,453 INFO L226 Difference]: Without dead ends: 497 [2022-07-22 17:36:59,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:36:59,455 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 165 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:59,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 177 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:36:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-22 17:36:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 477. [2022-07-22 17:36:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 358 states have (on average 1.1983240223463687) internal successors, (429), 379 states have internal predecessors, (429), 60 states have call successors, (60), 56 states have call predecessors, (60), 58 states have return successors, (95), 60 states have call predecessors, (95), 60 states have call successors, (95) [2022-07-22 17:36:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2022-07-22 17:36:59,478 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 584 transitions. Word has length 48 [2022-07-22 17:36:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:59,478 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 584 transitions. [2022-07-22 17:36:59,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 17:36:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 584 transitions. [2022-07-22 17:36:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 17:36:59,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:59,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:36:59,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -129816747, now seen corresponding path program 1 times [2022-07-22 17:36:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:59,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128204053] [2022-07-22 17:36:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 17:36:59,494 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 17:36:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 17:36:59,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 17:36:59,538 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 17:36:59,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 17:36:59,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:36:59,542 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:59,544 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 17:36:59,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 05:36:59 BoogieIcfgContainer [2022-07-22 17:36:59,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 17:36:59,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 17:36:59,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 17:36:59,581 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 17:36:59,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:36:57" (3/4) ... [2022-07-22 17:36:59,583 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 17:36:59,622 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 17:36:59,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 17:36:59,623 INFO L158 Benchmark]: Toolchain (without parser) took 3133.65ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 71.0MB in the beginning and 103.9MB in the end (delta: -32.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:36:59,623 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory was 89.1MB in the beginning and 89.0MB in the end (delta: 76.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:36:59,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.83ms. Allocated memory is still 111.1MB. Free memory was 70.8MB in the beginning and 84.7MB in the end (delta: -13.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-07-22 17:36:59,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.66ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 82.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 17:36:59,624 INFO L158 Benchmark]: Boogie Preprocessor took 29.80ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 80.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:36:59,624 INFO L158 Benchmark]: RCFGBuilder took 358.86ms. Allocated memory is still 111.1MB. Free memory was 80.5MB in the beginning and 64.4MB in the end (delta: 16.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-22 17:36:59,625 INFO L158 Benchmark]: TraceAbstraction took 2260.41ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 63.6MB in the beginning and 108.0MB in the end (delta: -44.4MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2022-07-22 17:36:59,625 INFO L158 Benchmark]: Witness Printer took 41.55ms. Allocated memory is still 140.5MB. Free memory was 108.0MB in the beginning and 103.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 17:36:59,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory was 89.1MB in the beginning and 89.0MB in the end (delta: 76.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.83ms. Allocated memory is still 111.1MB. Free memory was 70.8MB in the beginning and 84.7MB in the end (delta: -13.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.66ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 82.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.80ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 80.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 358.86ms. Allocated memory is still 111.1MB. Free memory was 80.5MB in the beginning and 64.4MB in the end (delta: 16.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2260.41ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 63.6MB in the beginning and 108.0MB in the end (delta: -44.4MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * Witness Printer took 41.55ms. Allocated memory is still 140.5MB. Free memory was 108.0MB in the beginning and 103.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 553]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L842] int waterLevel = 1; [L843] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] int retValue_acc ; [L498] int tmp ; [L502] FCALL select_helpers() [L503] FCALL select_features() [L504] CALL, EXPR valid_product() [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L504] RET, EXPR valid_product() [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) [L508] FCALL setup() [L509] CALL runTest() [L488] CALL test() [L777] int splverifierCounter ; [L778] int tmp ; [L779] int tmp___0 ; [L780] int tmp___1 ; [L781] int tmp___2 ; [L784] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L786] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L788] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L794] tmp = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L798] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L860] COND TRUE waterLevel < 2 [L861] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L804] tmp___0 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L808] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L872] COND FALSE !(\read(methaneLevelCritical)) [L875] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L814] tmp___2 = __VERIFIER_nondet_int() [L816] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___2=1, waterLevel=2] [L829] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L605] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] COND TRUE \read(systemActive) [L614] CALL processEnvironment() [L660] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L663] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L678] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L634] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L637] COND TRUE ! pumpRunning [L639] CALL, EXPR isHighWaterLevel() [L757] int retValue_acc ; [L758] int tmp ; [L759] int tmp___0 ; [L763] CALL, EXPR isHighWaterSensorDry() [L922] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L925] COND FALSE !(waterLevel < 2) [L929] retValue_acc = 0 [L930] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L763] RET, EXPR isHighWaterSensorDry() [L763] tmp = isHighWaterSensorDry() [L765] COND FALSE !(\read(tmp)) [L768] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L770] retValue_acc = tmp___0 [L771] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L639] RET, EXPR isHighWaterLevel() [L639] tmp = isHighWaterLevel() [L641] COND TRUE \read(tmp) [L643] CALL activatePump() [L688] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L643] RET activatePump() [L678] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L614] RET processEnvironment() [L620] CALL __utac_acc__Specification1_spec__1() [L524] int tmp ; [L525] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L529] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L881] int retValue_acc ; [L884] retValue_acc = methaneLevelCritical [L885] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L529] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L529] tmp = isMethaneLevelCritical() [L531] COND TRUE \read(tmp) [L533] CALL, EXPR isPumpRunning() [L712] int retValue_acc ; [L715] retValue_acc = pumpRunning [L716] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L533] RET, EXPR isPumpRunning() [L533] tmp___0 = isPumpRunning() [L535] COND TRUE \read(tmp___0) [L537] CALL __automaton_fail() [L553] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 932 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 904 mSDsluCounter, 2010 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1156 mSDsCounter, 252 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 938 IncrementalHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 252 mSolverCounterUnsat, 854 mSDtfsCounter, 938 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=477occurred in iteration=8, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 17:36:59,664 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