./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ --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 a24146f0f51336ad73890bbd928f5403b02b7d1c9a9c70cce136ffcb124619cc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:05:03,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:05:03,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:05:03,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:05:03,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:05:03,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:05:03,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:05:03,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:05:03,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:05:03,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:05:03,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:05:03,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:05:03,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:05:03,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:05:03,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:05:03,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:05:03,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:05:03,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:05:03,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:05:03,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:05:03,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:05:03,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:05:03,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:05:03,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:05:03,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:05:03,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:05:03,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:05:03,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:05:03,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:05:03,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:05:03,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:05:03,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:05:03,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:05:03,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:05:03,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:05:03,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:05:03,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:05:03,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:05:03,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:05:03,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:05:03,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:05:03,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:05:03,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:05:03,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:05:03,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:05:03,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:05:03,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:05:03,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:05:03,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:05:03,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:05:03,758 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:05:03,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:05:03,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:05:03,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:05:03,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:05:03,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:05:03,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:05:03,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:05:03,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:05:03,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:05:03,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:05:03,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:05:03,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:05:03,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:05:03,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:05:03,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:05:03,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:05:03,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:05:03,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:05:03,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:05:03,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:05:03,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:05:03,766 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:05:03,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:05:03,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:05:03,767 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a24146f0f51336ad73890bbd928f5403b02b7d1c9a9c70cce136ffcb124619cc [2022-10-17 11:05:04,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:05:04,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:05:04,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:05:04,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:05:04,038 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:05:04,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2022-10-17 11:05:04,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/data/dc8b45389/fcc9d08b8516422e9b46c7d19794bb62/FLAG60b9f0beb [2022-10-17 11:05:04,762 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:05:04,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2022-10-17 11:05:04,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/data/dc8b45389/fcc9d08b8516422e9b46c7d19794bb62/FLAG60b9f0beb [2022-10-17 11:05:05,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/data/dc8b45389/fcc9d08b8516422e9b46c7d19794bb62 [2022-10-17 11:05:05,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:05:05,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:05:05,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:05:05,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:05:05,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:05:05,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586334be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05, skipping insertion in model container [2022-10-17 11:05:05,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:05:05,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:05:05,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c[16679,16692] [2022-10-17 11:05:05,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:05:05,456 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:05:05,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c[16679,16692] [2022-10-17 11:05:05,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:05:05,540 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:05:05,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05 WrapperNode [2022-10-17 11:05:05,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:05:05,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:05:05,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:05:05,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:05:05,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,594 INFO L138 Inliner]: procedures = 58, calls = 161, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 277 [2022-10-17 11:05:05,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:05:05,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:05:05,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:05:05,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:05:05,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:05:05,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:05:05,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:05:05,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:05:05,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (1/1) ... [2022-10-17 11:05:05,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:05:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:05,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:05:05,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:05:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:05:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-10-17 11:05:05,745 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-10-17 11:05:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-10-17 11:05:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-10-17 11:05:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 11:05:05,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 11:05:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 11:05:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 11:05:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-10-17 11:05:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-10-17 11:05:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-10-17 11:05:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-10-17 11:05:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2022-10-17 11:05:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2022-10-17 11:05:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-10-17 11:05:05,750 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-10-17 11:05:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:05:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-10-17 11:05:05,751 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-10-17 11:05:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:05:05,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:05:05,865 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:05:05,867 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:05:06,331 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:05:06,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:05:06,343 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 11:05:06,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:06 BoogieIcfgContainer [2022-10-17 11:05:06,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:05:06,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:05:06,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:05:06,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:05:06,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:05:05" (1/3) ... [2022-10-17 11:05:06,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1152ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:05:06, skipping insertion in model container [2022-10-17 11:05:06,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:05" (2/3) ... [2022-10-17 11:05:06,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1152ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:05:06, skipping insertion in model container [2022-10-17 11:05:06,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:06" (3/3) ... [2022-10-17 11:05:06,358 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2022-10-17 11:05:06,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:05:06,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:05:06,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:05:06,480 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@157c3a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:05:06,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:05:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 88 states have internal predecessors, (106), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2022-10-17 11:05:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 11:05:06,509 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:06,510 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] [2022-10-17 11:05:06,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 913220974, now seen corresponding path program 1 times [2022-10-17 11:05:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026845905] [2022-10-17 11:05:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:06,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 11:05:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:06,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:06,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026845905] [2022-10-17 11:05:06,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026845905] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:06,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:06,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:05:06,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273128006] [2022-10-17 11:05:06,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:06,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:05:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:05:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:05:06,943 INFO L87 Difference]: Start difference. First operand has 105 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 88 states have internal predecessors, (106), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) 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) [2022-10-17 11:05:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:06,985 INFO L93 Difference]: Finished difference Result 202 states and 275 transitions. [2022-10-17 11:05:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:05:06,988 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 [2022-10-17 11:05:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:06,998 INFO L225 Difference]: With dead ends: 202 [2022-10-17 11:05:06,999 INFO L226 Difference]: Without dead ends: 96 [2022-10-17 11:05:07,008 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 [2022-10-17 11:05:07,013 INFO L413 NwaCegarLoop]: 134 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, 134 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 [2022-10-17 11:05:07,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-17 11:05:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-10-17 11:05:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 80 states have internal predecessors, (92), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 11:05:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2022-10-17 11:05:07,118 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 23 [2022-10-17 11:05:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:07,119 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2022-10-17 11:05:07,120 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) [2022-10-17 11:05:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2022-10-17 11:05:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 11:05:07,127 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:07,128 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] [2022-10-17 11:05:07,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:05:07,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1406319906, now seen corresponding path program 1 times [2022-10-17 11:05:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:07,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13073445] [2022-10-17 11:05:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:07,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 11:05:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13073445] [2022-10-17 11:05:07,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13073445] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:07,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:07,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:05:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672984355] [2022-10-17 11:05:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:07,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:07,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:07,369 INFO L87 Difference]: Start difference. First operand 96 states and 125 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) [2022-10-17 11:05:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:07,415 INFO L93 Difference]: Finished difference Result 153 states and 199 transitions. [2022-10-17 11:05:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:07,416 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 [2022-10-17 11:05:07,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:07,420 INFO L225 Difference]: With dead ends: 153 [2022-10-17 11:05:07,421 INFO L226 Difference]: Without dead ends: 87 [2022-10-17 11:05:07,424 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 [2022-10-17 11:05:07,426 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 17 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 202 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 [2022-10-17 11:05:07,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:07,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-17 11:05:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-10-17 11:05:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.328125) internal successors, (85), 74 states have internal predecessors, (85), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2022-10-17 11:05:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2022-10-17 11:05:07,448 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 24 [2022-10-17 11:05:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:07,449 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2022-10-17 11:05:07,449 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) [2022-10-17 11:05:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2022-10-17 11:05:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 11:05:07,456 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:07,456 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] [2022-10-17 11:05:07,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:05:07,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -973095107, now seen corresponding path program 1 times [2022-10-17 11:05:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:07,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072666827] [2022-10-17 11:05:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 11:05:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:07,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:07,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072666827] [2022-10-17 11:05:07,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072666827] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:07,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:07,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:05:07,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577536667] [2022-10-17 11:05:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:07,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:07,629 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-10-17 11:05:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:07,693 INFO L93 Difference]: Finished difference Result 245 states and 324 transitions. [2022-10-17 11:05:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 29 [2022-10-17 11:05:07,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:07,698 INFO L225 Difference]: With dead ends: 245 [2022-10-17 11:05:07,698 INFO L226 Difference]: Without dead ends: 165 [2022-10-17 11:05:07,699 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 [2022-10-17 11:05:07,701 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 105 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:07,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 238 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-10-17 11:05:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2022-10-17 11:05:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 136 states have internal predecessors, (158), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 17 states have call predecessors, (28), 28 states have call successors, (28) [2022-10-17 11:05:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2022-10-17 11:05:07,736 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 29 [2022-10-17 11:05:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:07,737 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2022-10-17 11:05:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-10-17 11:05:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2022-10-17 11:05:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 11:05:07,739 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:07,739 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] [2022-10-17 11:05:07,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:05:07,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 980216428, now seen corresponding path program 1 times [2022-10-17 11:05:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:07,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953675035] [2022-10-17 11:05:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 11:05:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:07,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:07,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953675035] [2022-10-17 11:05:07,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953675035] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:07,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:07,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:05:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185446716] [2022-10-17 11:05:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:07,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:05:07,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:05:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:05:07,933 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 1 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) [2022-10-17 11:05:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:08,125 INFO L93 Difference]: Finished difference Result 472 states and 633 transitions. [2022-10-17 11:05:08,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:05:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 1 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 32 [2022-10-17 11:05:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:08,134 INFO L225 Difference]: With dead ends: 472 [2022-10-17 11:05:08,134 INFO L226 Difference]: Without dead ends: 317 [2022-10-17 11:05:08,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 11:05:08,143 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 84 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:08,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 560 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:05:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-10-17 11:05:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 311. [2022-10-17 11:05:08,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 222 states have (on average 1.3423423423423424) internal successors, (298), 259 states have internal predecessors, (298), 56 states have call successors, (56), 32 states have call predecessors, (56), 32 states have return successors, (58), 34 states have call predecessors, (58), 56 states have call successors, (58) [2022-10-17 11:05:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 412 transitions. [2022-10-17 11:05:08,215 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 412 transitions. Word has length 32 [2022-10-17 11:05:08,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:08,216 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 412 transitions. [2022-10-17 11:05:08,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 1 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) [2022-10-17 11:05:08,216 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 412 transitions. [2022-10-17 11:05:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 11:05:08,220 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:08,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:08,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:05:08,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1255493776, now seen corresponding path program 1 times [2022-10-17 11:05:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:08,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514404843] [2022-10-17 11:05:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 11:05:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:08,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:08,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514404843] [2022-10-17 11:05:08,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514404843] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:08,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:08,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:05:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220660286] [2022-10-17 11:05:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:05:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:05:08,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:05:08,444 INFO L87 Difference]: Start difference. First operand 311 states and 412 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:08,885 INFO L93 Difference]: Finished difference Result 805 states and 1093 transitions. [2022-10-17 11:05:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:05:08,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-10-17 11:05:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:08,892 INFO L225 Difference]: With dead ends: 805 [2022-10-17 11:05:08,894 INFO L226 Difference]: Without dead ends: 501 [2022-10-17 11:05:08,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:05:08,897 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 126 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:08,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 212 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 11:05:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-10-17 11:05:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 487. [2022-10-17 11:05:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 354 states have (on average 1.2881355932203389) internal successors, (456), 387 states have internal predecessors, (456), 72 states have call successors, (72), 60 states have call predecessors, (72), 60 states have return successors, (100), 62 states have call predecessors, (100), 72 states have call successors, (100) [2022-10-17 11:05:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 628 transitions. [2022-10-17 11:05:08,998 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 628 transitions. Word has length 36 [2022-10-17 11:05:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:08,999 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 628 transitions. [2022-10-17 11:05:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 628 transitions. [2022-10-17 11:05:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 11:05:09,004 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:09,004 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, 1, 1] [2022-10-17 11:05:09,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:05:09,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash -396811871, now seen corresponding path program 1 times [2022-10-17 11:05:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:09,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051242367] [2022-10-17 11:05:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:09,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 11:05:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:05:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:05:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 11:05:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051242367] [2022-10-17 11:05:09,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051242367] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:09,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:09,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:05:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354116860] [2022-10-17 11:05:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:09,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:05:09,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:05:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:05:09,197 INFO L87 Difference]: Start difference. First operand 487 states and 628 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 11:05:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:09,615 INFO L93 Difference]: Finished difference Result 1089 states and 1420 transitions. [2022-10-17 11:05:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:05:09,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-10-17 11:05:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:09,623 INFO L225 Difference]: With dead ends: 1089 [2022-10-17 11:05:09,623 INFO L226 Difference]: Without dead ends: 609 [2022-10-17 11:05:09,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:05:09,626 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 137 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:09,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 226 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 11:05:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-10-17 11:05:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 595. [2022-10-17 11:05:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 434 states have (on average 1.2488479262672811) internal successors, (542), 467 states have internal predecessors, (542), 80 states have call successors, (80), 60 states have call predecessors, (80), 80 states have return successors, (128), 86 states have call predecessors, (128), 80 states have call successors, (128) [2022-10-17 11:05:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 750 transitions. [2022-10-17 11:05:09,745 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 750 transitions. Word has length 52 [2022-10-17 11:05:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:09,746 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 750 transitions. [2022-10-17 11:05:09,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 11:05:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 750 transitions. [2022-10-17 11:05:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 11:05:09,748 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:09,749 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, 1, 1] [2022-10-17 11:05:09,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:05:09,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1214460321, now seen corresponding path program 1 times [2022-10-17 11:05:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:09,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158756473] [2022-10-17 11:05:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 11:05:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:05:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:05:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 11:05:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:10,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158756473] [2022-10-17 11:05:10,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158756473] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:10,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:10,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:05:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178264628] [2022-10-17 11:05:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:10,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:05:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:05:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:05:10,026 INFO L87 Difference]: Start difference. First operand 595 states and 750 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 11:05:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:10,713 INFO L93 Difference]: Finished difference Result 1237 states and 1612 transitions. [2022-10-17 11:05:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 11:05:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-10-17 11:05:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:10,719 INFO L225 Difference]: With dead ends: 1237 [2022-10-17 11:05:10,719 INFO L226 Difference]: Without dead ends: 649 [2022-10-17 11:05:10,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-10-17 11:05:10,723 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 365 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:10,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 242 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 11:05:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-10-17 11:05:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 603. [2022-10-17 11:05:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 442 states have (on average 1.244343891402715) internal successors, (550), 475 states have internal predecessors, (550), 80 states have call successors, (80), 60 states have call predecessors, (80), 80 states have return successors, (128), 86 states have call predecessors, (128), 80 states have call successors, (128) [2022-10-17 11:05:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 758 transitions. [2022-10-17 11:05:10,787 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 758 transitions. Word has length 52 [2022-10-17 11:05:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:10,787 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 758 transitions. [2022-10-17 11:05:10,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 11:05:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 758 transitions. [2022-10-17 11:05:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 11:05:10,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:10,792 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, 1, 1] [2022-10-17 11:05:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:05:10,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash -995605603, now seen corresponding path program 1 times [2022-10-17 11:05:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:10,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124401040] [2022-10-17 11:05:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 11:05:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 11:05:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:05:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 11:05:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:10,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:10,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124401040] [2022-10-17 11:05:10,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124401040] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:10,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:10,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:05:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119877294] [2022-10-17 11:05:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:10,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:05:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:05:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:05:10,962 INFO L87 Difference]: Start difference. First operand 603 states and 758 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-17 11:05:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:11,419 INFO L93 Difference]: Finished difference Result 1731 states and 2268 transitions. [2022-10-17 11:05:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:05:11,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2022-10-17 11:05:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:11,430 INFO L225 Difference]: With dead ends: 1731 [2022-10-17 11:05:11,430 INFO L226 Difference]: Without dead ends: 1135 [2022-10-17 11:05:11,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:05:11,434 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 348 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:11,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 268 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 11:05:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-10-17 11:05:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1123. [2022-10-17 11:05:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 826 states have (on average 1.2130750605326877) internal successors, (1002), 877 states have internal predecessors, (1002), 150 states have call successors, (150), 134 states have call predecessors, (150), 146 states have return successors, (264), 152 states have call predecessors, (264), 150 states have call successors, (264) [2022-10-17 11:05:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1416 transitions. [2022-10-17 11:05:11,545 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1416 transitions. Word has length 52 [2022-10-17 11:05:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:11,545 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1416 transitions. [2022-10-17 11:05:11,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-17 11:05:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1416 transitions. [2022-10-17 11:05:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-17 11:05:11,548 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:11,548 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, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:11,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:05:11,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash -248812477, now seen corresponding path program 1 times [2022-10-17 11:05:11,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:11,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396746537] [2022-10-17 11:05:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:11,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:11,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:05:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:11,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:05:11,610 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 11:05:11,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 11:05:11,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:05:11,617 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:11,621 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 11:05:11,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 11:05:11 BoogieIcfgContainer [2022-10-17 11:05:11,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 11:05:11,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:05:11,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:05:11,678 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:05:11,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:06" (3/4) ... [2022-10-17 11:05:11,681 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 11:05:11,765 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 11:05:11,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:05:11,766 INFO L158 Benchmark]: Toolchain (without parser) took 6736.99ms. Allocated memory was 94.4MB in the beginning and 188.7MB in the end (delta: 94.4MB). Free memory was 60.9MB in the beginning and 108.8MB in the end (delta: -48.0MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,766 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:05:11,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.70ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 60.2MB in the end (delta: 457.8kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.35ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 57.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,768 INFO L158 Benchmark]: Boogie Preprocessor took 39.47ms. Allocated memory is still 94.4MB. Free memory was 57.6MB in the beginning and 55.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,768 INFO L158 Benchmark]: RCFGBuilder took 711.13ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 55.8MB in the beginning and 104.5MB in the end (delta: -48.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,768 INFO L158 Benchmark]: TraceAbstraction took 5327.68ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 103.9MB in the beginning and 114.1MB in the end (delta: -10.2MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,769 INFO L158 Benchmark]: Witness Printer took 87.60ms. Allocated memory is still 188.7MB. Free memory was 114.1MB in the beginning and 108.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 11:05:11,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.70ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 60.2MB in the end (delta: 457.8kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.35ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 57.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.47ms. Allocated memory is still 94.4MB. Free memory was 57.6MB in the beginning and 55.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 711.13ms. Allocated memory was 94.4MB in the beginning and 136.3MB in the end (delta: 41.9MB). Free memory was 55.8MB in the beginning and 104.5MB in the end (delta: -48.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5327.68ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 103.9MB in the beginning and 114.1MB in the end (delta: -10.2MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Witness Printer took 87.60ms. Allocated memory is still 188.7MB. Free memory was 114.1MB in the beginning and 108.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 816]: 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; [L500] int pumpRunning = 0; [L501] int systemActive = 1; [L821] int cleanupTimeShifts = 4; [L918] int waterLevel = 1; [L919] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L894] int retValue_acc ; [L895] int tmp ; [L899] FCALL select_helpers() [L900] FCALL select_features() [L901] CALL, EXPR valid_product() [L776] int retValue_acc ; [L779] retValue_acc = 1 [L780] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L901] RET, EXPR valid_product() [L901] tmp = valid_product() [L903] COND TRUE \read(tmp) [L905] FCALL setup() [L906] CALL runTest() [L888] CALL test() [L423] int splverifierCounter ; [L424] int tmp ; [L425] int tmp___0 ; [L426] int tmp___1 ; [L427] int tmp___2 ; [L430] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L432] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L434] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L440] tmp = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L444] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L936] COND TRUE waterLevel < 2 [L937] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L444] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L450] tmp___0 = __VERIFIER_nondet_int() [L452] 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] [L454] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L948] COND FALSE !(\read(methaneLevelCritical)) [L951] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L454] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L460] tmp___2 = __VERIFIER_nondet_int() [L462] COND TRUE \read(tmp___2) [L464] CALL startSystem() [L742] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L464] RET startSystem() [L479] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L508] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L515] COND TRUE \read(systemActive) [L517] CALL processEnvironment() [L589] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L563] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L581] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L537] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L540] COND TRUE ! pumpRunning [L542] CALL, EXPR isHighWaterLevel() [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L692] CALL, EXPR isHighWaterSensorDry() [L998] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L1001] COND FALSE !(waterLevel < 2) [L1005] retValue_acc = 0 [L1006] 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] [L692] RET, EXPR isHighWaterSensorDry() [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] 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] [L699] retValue_acc = tmp___0 [L700] 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] [L542] RET, EXPR isHighWaterLevel() [L542] tmp = isHighWaterLevel() [L544] COND TRUE \read(tmp) [L546] CALL activatePump() [L617] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L546] RET activatePump() [L581] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L607] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L517] RET processEnvironment() [L523] CALL __utac_acc__Specification1_spec__1() [L787] int tmp ; [L788] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L792] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L957] int retValue_acc ; [L960] retValue_acc = methaneLevelCritical [L961] 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] [L792] 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] [L792] tmp = isMethaneLevelCritical() [L794] COND TRUE \read(tmp) [L796] CALL, EXPR isPumpRunning() [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] 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] [L796] RET, EXPR isPumpRunning() [L796] tmp___0 = isPumpRunning() [L798] COND TRUE \read(tmp___0) [L800] CALL __automaton_fail() [L816] 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 10 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1182 mSDsluCounter, 2082 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1113 mSDsCounter, 413 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1498 IncrementalHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 413 mSolverCounterUnsat, 969 mSDtfsCounter, 1498 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=8, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 95 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-10-17 11:05:11,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58cee2bb-07bc-4510-adfe-3856d99042a1/bin/uautomizer-J5u9QxTXDZ/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