./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product30.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 e8a2709147afbb012c6cccd417fa49b368030a0529ed1a30816506b77e415ad7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:59:16,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:59:16,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:59:16,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:59:16,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:59:16,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:59:16,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:59:16,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:59:16,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:59:16,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:59:16,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:59:16,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:59:16,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:59:16,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:59:16,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:59:16,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:59:16,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:59:16,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:59:16,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:59:16,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:59:16,828 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:59:16,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:59:16,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:59:16,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:59:16,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:59:16,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:59:16,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:59:16,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:59:16,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:59:16,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:59:16,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:59:16,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:59:16,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:59:16,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:59:16,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:59:16,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:59:16,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:59:16,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:59:16,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:59:16,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:59:16,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:59:16,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:59:16,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:59:16,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:59:16,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:59:16,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:59:16,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:59:16,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:59:16,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:59:16,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:59:16,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:59:16,883 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:59:16,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:59:16,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:59:16,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:59:16,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:59:16,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:59:16,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:59:16,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:59:16,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:59:16,886 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:59:16,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:59:16,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:59:16,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:59:16,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:59:16,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:59:16,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:59:16,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:59:16,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:59:16,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:59:16,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:59:16,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:59:16,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:59:16,888 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:59:16,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:59:16,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:59:16,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8a2709147afbb012c6cccd417fa49b368030a0529ed1a30816506b77e415ad7 [2022-07-13 17:59:17,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:59:17,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:59:17,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:59:17,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:59:17,180 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:59:17,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product30.cil.c [2022-07-13 17:59:17,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc894620/5e2a4088f507412ba30fa08c94b6c013/FLAG56b132f9c [2022-07-13 17:59:17,697 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:59:17,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product30.cil.c [2022-07-13 17:59:17,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc894620/5e2a4088f507412ba30fa08c94b6c013/FLAG56b132f9c [2022-07-13 17:59:18,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc894620/5e2a4088f507412ba30fa08c94b6c013 [2022-07-13 17:59:18,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:59:18,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:59:18,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:59:18,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:59:18,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:59:18,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0de6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18, skipping insertion in model container [2022-07-13 17:59:18,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:59:18,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:59:18,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product30.cil.c[17441,17454] [2022-07-13 17:59:18,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:59:18,365 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:59:18,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product30.cil.c[17441,17454] [2022-07-13 17:59:18,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:59:18,464 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:59:18,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18 WrapperNode [2022-07-13 17:59:18,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:59:18,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:59:18,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:59:18,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:59:18,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,527 INFO L137 Inliner]: procedures = 55, calls = 157, calls flagged for inlining = 21, calls inlined = 17, statements flattened = 237 [2022-07-13 17:59:18,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:59:18,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:59:18,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:59:18,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:59:18,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:59:18,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:59:18,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:59:18,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:59:18,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:59:18,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:59:18,594 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) [2022-07-13 17:59:18,595 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 [2022-07-13 17:59:18,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:59:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-13 17:59:18,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-13 17:59:18,624 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:59:18,625 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:59:18,625 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:59:18,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:59:18,628 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-13 17:59:18,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-13 17:59:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-13 17:59:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-13 17:59:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-07-13 17:59:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-07-13 17:59:18,629 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-07-13 17:59:18,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-07-13 17:59:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-07-13 17:59:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-07-13 17:59:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:59:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-13 17:59:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-13 17:59:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:59:18,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:59:18,719 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:59:18,720 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:59:19,072 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:59:19,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:59:19,081 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 17:59:19,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:59:19 BoogieIcfgContainer [2022-07-13 17:59:19,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:59:19,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:59:19,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:59:19,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:59:19,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:59:18" (1/3) ... [2022-07-13 17:59:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244876bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:59:19, skipping insertion in model container [2022-07-13 17:59:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18" (2/3) ... [2022-07-13 17:59:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244876bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:59:19, skipping insertion in model container [2022-07-13 17:59:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:59:19" (3/3) ... [2022-07-13 17:59:19,090 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2022-07-13 17:59:19,103 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:59:19,103 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:59:19,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:59:19,168 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@4c259d2d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5cc9a7d3 [2022-07-13 17:59:19,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:59:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 76 states have internal predecessors, (93), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 17:59:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 17:59:19,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:19,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:59:19,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1120207039, now seen corresponding path program 1 times [2022-07-13 17:59:19,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:19,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635376623] [2022-07-13 17:59:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:59:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:59:19,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:19,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635376623] [2022-07-13 17:59:19,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635376623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:19,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:19,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 17:59:19,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784753628] [2022-07-13 17:59:19,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:19,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:59:19,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:59:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 17:59:19,479 INFO L87 Difference]: Start difference. First operand has 94 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 76 states have internal predecessors, (93), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:19,521 INFO L93 Difference]: Finished difference Result 180 states and 241 transitions. [2022-07-13 17:59:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:59:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-13 17:59:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:19,532 INFO L225 Difference]: With dead ends: 180 [2022-07-13 17:59:19,532 INFO L226 Difference]: Without dead ends: 85 [2022-07-13 17:59:19,534 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 [2022-07-13 17:59:19,537 INFO L413 NwaCegarLoop]: 117 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, 117 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 [2022-07-13 17:59:19,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:19,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-13 17:59:19,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-07-13 17:59:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 68 states have internal predecessors, (79), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-13 17:59:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2022-07-13 17:59:19,573 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 25 [2022-07-13 17:59:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:19,573 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2022-07-13 17:59:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2022-07-13 17:59:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 17:59:19,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:19,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:59:19,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:59:19,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash 976392214, now seen corresponding path program 1 times [2022-07-13 17:59:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:19,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733794576] [2022-07-13 17:59:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:59:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:59:19,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:19,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733794576] [2022-07-13 17:59:19,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733794576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:19,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:19,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 17:59:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913598903] [2022-07-13 17:59:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:19,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:59:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:59:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 17:59:19,635 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:19,647 INFO L93 Difference]: Finished difference Result 135 states and 171 transitions. [2022-07-13 17:59:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:59:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-07-13 17:59:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:19,649 INFO L225 Difference]: With dead ends: 135 [2022-07-13 17:59:19,650 INFO L226 Difference]: Without dead ends: 76 [2022-07-13 17:59:19,650 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 [2022-07-13 17:59:19,652 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 13 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 173 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 [2022-07-13 17:59:19,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 173 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-13 17:59:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-07-13 17:59:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.309090909090909) internal successors, (72), 62 states have internal predecessors, (72), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 17:59:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2022-07-13 17:59:19,664 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 26 [2022-07-13 17:59:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:19,664 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2022-07-13 17:59:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2022-07-13 17:59:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 17:59:19,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:19,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:59:19,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:59:19,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2112132617, now seen corresponding path program 1 times [2022-07-13 17:59:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:19,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160147299] [2022-07-13 17:59:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 17:59:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:59:19,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:19,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160147299] [2022-07-13 17:59:19,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160147299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:19,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:19,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 17:59:19,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048160587] [2022-07-13 17:59:19,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:19,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:59:19,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:59:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 17:59:19,734 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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) [2022-07-13 17:59:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:19,750 INFO L93 Difference]: Finished difference Result 145 states and 186 transitions. [2022-07-13 17:59:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:59:19,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-07-13 17:59:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:19,757 INFO L225 Difference]: With dead ends: 145 [2022-07-13 17:59:19,758 INFO L226 Difference]: Without dead ends: 76 [2022-07-13 17:59:19,761 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 [2022-07-13 17:59:19,763 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:59:19,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 94 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:19,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-13 17:59:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-07-13 17:59:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.290909090909091) internal successors, (71), 62 states have internal predecessors, (71), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 17:59:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2022-07-13 17:59:19,782 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 31 [2022-07-13 17:59:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:19,782 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2022-07-13 17:59:19,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (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) [2022-07-13 17:59:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2022-07-13 17:59:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 17:59:19,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:19,787 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] [2022-07-13 17:59:19,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:59:19,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:19,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1935638267, now seen corresponding path program 1 times [2022-07-13 17:59:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:19,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642128310] [2022-07-13 17:59:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 17:59:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:59:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:59:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:59:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:19,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642128310] [2022-07-13 17:59:19,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642128310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:19,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:19,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:59:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104909197] [2022-07-13 17:59:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:59:19,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:59:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:59:19,915 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 17:59:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:20,190 INFO L93 Difference]: Finished difference Result 241 states and 311 transitions. [2022-07-13 17:59:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:59:20,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-07-13 17:59:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:20,194 INFO L225 Difference]: With dead ends: 241 [2022-07-13 17:59:20,194 INFO L226 Difference]: Without dead ends: 172 [2022-07-13 17:59:20,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:59:20,203 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 138 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:59:20,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 325 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 17:59:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-07-13 17:59:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 138. [2022-07-13 17:59:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.2857142857142858) internal successors, (126), 110 states have internal predecessors, (126), 24 states have call successors, (24), 16 states have call predecessors, (24), 15 states have return successors, (25), 15 states have call predecessors, (25), 24 states have call successors, (25) [2022-07-13 17:59:20,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 175 transitions. [2022-07-13 17:59:20,231 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 175 transitions. Word has length 41 [2022-07-13 17:59:20,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:20,232 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 175 transitions. [2022-07-13 17:59:20,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 17:59:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 175 transitions. [2022-07-13 17:59:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 17:59:20,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:20,236 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] [2022-07-13 17:59:20,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:59:20,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1968366006, now seen corresponding path program 1 times [2022-07-13 17:59:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:20,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348225495] [2022-07-13 17:59:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:59:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:59:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:59:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:59:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:20,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348225495] [2022-07-13 17:59:20,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348225495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:20,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:20,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 17:59:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335199596] [2022-07-13 17:59:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:59:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:59:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 17:59:20,312 INFO L87 Difference]: Start difference. First operand 138 states and 175 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 17:59:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:20,355 INFO L93 Difference]: Finished difference Result 226 states and 289 transitions. [2022-07-13 17:59:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:59:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-07-13 17:59:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:20,358 INFO L225 Difference]: With dead ends: 226 [2022-07-13 17:59:20,358 INFO L226 Difference]: Without dead ends: 95 [2022-07-13 17:59:20,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 17:59:20,361 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:59:20,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-13 17:59:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-07-13 17:59:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 75 states have internal predecessors, (86), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 17:59:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2022-07-13 17:59:20,377 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 43 [2022-07-13 17:59:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:20,378 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2022-07-13 17:59:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 17:59:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2022-07-13 17:59:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 17:59:20,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:20,380 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] [2022-07-13 17:59:20,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:59:20,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash 940448095, now seen corresponding path program 1 times [2022-07-13 17:59:20,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:20,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407094436] [2022-07-13 17:59:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 17:59:20,400 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 17:59:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 17:59:20,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 17:59:20,435 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 17:59:20,436 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 17:59:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:59:20,440 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 17:59:20,442 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 17:59:20,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 05:59:20 BoogieIcfgContainer [2022-07-13 17:59:20,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 17:59:20,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 17:59:20,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 17:59:20,498 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 17:59:20,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:59:19" (3/4) ... [2022-07-13 17:59:20,500 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 17:59:20,541 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 17:59:20,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 17:59:20,542 INFO L158 Benchmark]: Toolchain (without parser) took 2504.07ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 48.9MB in the beginning and 61.2MB in the end (delta: -12.3MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,542 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 17:59:20,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.13ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 48.7MB in the beginning and 93.8MB in the end (delta: -45.1MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.29ms. Allocated memory is still 123.7MB. Free memory was 93.8MB in the beginning and 90.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,543 INFO L158 Benchmark]: Boogie Preprocessor took 37.71ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 89.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,543 INFO L158 Benchmark]: RCFGBuilder took 516.13ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,544 INFO L158 Benchmark]: TraceAbstraction took 1412.84ms. Allocated memory is still 123.7MB. Free memory was 72.0MB in the beginning and 65.4MB in the end (delta: 6.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,544 INFO L158 Benchmark]: Witness Printer took 44.28ms. Allocated memory is still 123.7MB. Free memory was 65.1MB in the beginning and 61.2MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 17:59:20,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.13ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 48.7MB in the beginning and 93.8MB in the end (delta: -45.1MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.29ms. Allocated memory is still 123.7MB. Free memory was 93.8MB in the beginning and 90.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.71ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 89.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.13ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1412.84ms. Allocated memory is still 123.7MB. Free memory was 72.0MB in the beginning and 65.4MB in the end (delta: 6.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 44.28ms. Allocated memory is still 123.7MB. Free memory was 65.1MB in the beginning and 61.2MB in the end (delta: 3.9MB). 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: 893]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L146] int cleanupTimeShifts = 4; [L417] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L685] int pumpRunning = 0; [L686] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L225] int retValue_acc ; [L226] int tmp ; [L230] FCALL select_helpers() [L231] FCALL select_features() [L232] CALL, EXPR valid_product() [L924] int retValue_acc ; [L927] retValue_acc = 1 [L928] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L232] RET, EXPR valid_product() [L232] tmp = valid_product() [L234] COND TRUE \read(tmp) [L236] FCALL setup() [L237] CALL runTest() [L216] CALL test() [L616] int splverifierCounter ; [L617] int tmp ; [L618] int tmp___0 ; [L619] int tmp___1 ; [L620] int tmp___2 ; [L623] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L625] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L627] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L633] tmp = __VERIFIER_nondet_int() [L635] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L637] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L637] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L643] tmp___0 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L653] tmp___2 = __VERIFIER_nondet_int() [L655] COND FALSE !(\read(tmp___2)) [L661] tmp___1 = __VERIFIER_nondet_int() [L663] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L670] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L693] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L748] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L751] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L766] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L725] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L740] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L766] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L934] int tmp ; [L935] int tmp___0 ; [L936] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L940] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L940] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L940] tmp = isMethaneLevelCritical() [L942] COND FALSE !(\read(tmp)) [L946] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L946] RET, EXPR getWaterLevel() [L946] tmp___0 = getWaterLevel() [L948] COND TRUE tmp___0 == 2 [L950] CALL, EXPR isPumpRunning() [L817] int retValue_acc ; [L820] retValue_acc = pumpRunning [L821] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L950] RET, EXPR isPumpRunning() [L950] tmp___1 = isPumpRunning() [L952] COND FALSE !(\read(tmp___1)) [L956] CALL __automaton_fail() [L893] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 781 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 331 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 197 IncrementalHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 450 mSDtfsCounter, 197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-13 17:59:20,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE