./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN --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 f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 --- 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-6b4ec56 [2022-11-20 11:53:52,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:53:52,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:53:52,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:53:52,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:53:52,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:53:52,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:53:52,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:53:52,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:53:52,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:53:52,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:53:52,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:53:52,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:53:52,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:53:52,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:53:52,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:53:52,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:53:52,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:53:52,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:53:52,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:53:52,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:53:52,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:53:52,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:53:52,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:53:52,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:53:52,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:53:52,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:53:52,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:53:52,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:53:52,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:53:52,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:53:52,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:53:52,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:53:52,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:53:52,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:53:52,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:53:52,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:53:52,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:53:52,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:53:52,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:53:52,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:53:52,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:53:53,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:53:53,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:53:53,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:53:53,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:53:53,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:53:53,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:53:53,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:53:53,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:53:53,023 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:53:53,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:53:53,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:53:53,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:53:53,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:53:53,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:53:53,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:53:53,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:53:53,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:53:53,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:53:53,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:53:53,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:53:53,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:53:53,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:53:53,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:53:53,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:53:53,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:53:53,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:53:53,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:53:53,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:53:53,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:53:53,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:53:53,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:53:53,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:53:53,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:53:53,027 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_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8aef606697b9aeff574acbbe43b28a142b9105524bb5bbab5e1458056090146 [2022-11-20 11:53:53,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:53:53,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:53:53,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:53:53,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:53:53,451 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:53:53,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2022-11-20 11:53:56,441 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:53:56,750 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:53:56,751 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2022-11-20 11:53:56,772 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/data/9fb00ac38/1e93c6498c7a4595a88189c26014ecd4/FLAGfe2256307 [2022-11-20 11:53:56,794 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/data/9fb00ac38/1e93c6498c7a4595a88189c26014ecd4 [2022-11-20 11:53:56,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:53:56,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:53:56,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:53:56,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:53:56,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:53:56,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:56" (1/1) ... [2022-11-20 11:53:56,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf24232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:56, skipping insertion in model container [2022-11-20 11:53:56,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:56" (1/1) ... [2022-11-20 11:53:56,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:53:56,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:53:57,258 WARN L237 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_6929d074-3fe1-45f5-bf49-420c056d8eb5/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2022-11-20 11:53:57,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:53:57,306 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:53:57,408 WARN L237 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_6929d074-3fe1-45f5-bf49-420c056d8eb5/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2022-11-20 11:53:57,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:53:57,435 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:53:57,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57 WrapperNode [2022-11-20 11:53:57,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:53:57,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:53:57,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:53:57,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:53:57,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,502 INFO L138 Inliner]: procedures = 54, calls = 96, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 181 [2022-11-20 11:53:57,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:53:57,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:53:57,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:53:57,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:53:57,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,528 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:53:57,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:53:57,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:53:57,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:53:57,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (1/1) ... [2022-11-20 11:53:57,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:53:57,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:57,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:53:57,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:53:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:53:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 11:53:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 11:53:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:53:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:53:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:53:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:53:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-20 11:53:57,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-20 11:53:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 11:53:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 11:53:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:53:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 11:53:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 11:53:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:53:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:53:57,800 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:53:57,802 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:53:58,176 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:53:58,198 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:53:58,198 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:53:58,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:58 BoogieIcfgContainer [2022-11-20 11:53:58,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:53:58,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:53:58,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:53:58,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:53:58,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:53:56" (1/3) ... [2022-11-20 11:53:58,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e2a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:58, skipping insertion in model container [2022-11-20 11:53:58,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:57" (2/3) ... [2022-11-20 11:53:58,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e2a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:58, skipping insertion in model container [2022-11-20 11:53:58,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:58" (3/3) ... [2022-11-20 11:53:58,222 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2022-11-20 11:53:58,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:53:58,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:53:58,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:53:58,340 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;@57a5740f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:53:58,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:53:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 68 states have internal predecessors, (86), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 11:53:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:53:58,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:58,361 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] [2022-11-20 11:53:58,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:58,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1535333319, now seen corresponding path program 1 times [2022-11-20 11:53:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:58,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433021314] [2022-11-20 11:53:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:53:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433021314] [2022-11-20 11:53:58,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433021314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:58,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:58,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:53:58,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158476427] [2022-11-20 11:53:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:58,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:53:58,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:58,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:53:58,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:53:58,709 INFO L87 Difference]: Start difference. First operand has 80 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 68 states have internal predecessors, (86), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:53:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:58,746 INFO L93 Difference]: Finished difference Result 152 states and 207 transitions. [2022-11-20 11:53:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:53:58,748 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 [2022-11-20 11:53:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:58,759 INFO L225 Difference]: With dead ends: 152 [2022-11-20 11:53:58,759 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 11:53:58,764 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 [2022-11-20 11:53:58,767 INFO L413 NwaCegarLoop]: 100 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, 100 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 [2022-11-20 11:53:58,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 11:53:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-20 11:53:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.309090909090909) internal successors, (72), 60 states have internal predecessors, (72), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:53:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2022-11-20 11:53:58,819 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 23 [2022-11-20 11:53:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:58,820 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2022-11-20 11:53:58,821 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) [2022-11-20 11:53:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2022-11-20 11:53:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:53:58,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:58,826 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] [2022-11-20 11:53:58,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:53:58,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1879035650, now seen corresponding path program 1 times [2022-11-20 11:53:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:58,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924504468] [2022-11-20 11:53:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:53:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924504468] [2022-11-20 11:53:58,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924504468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:58,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:58,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054499551] [2022-11-20 11:53:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:59,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:59,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:59,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:59,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:59,002 INFO L87 Difference]: Start difference. First operand 71 states and 91 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) [2022-11-20 11:53:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:59,021 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2022-11-20 11:53:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:59,022 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 [2022-11-20 11:53:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:59,024 INFO L225 Difference]: With dead ends: 107 [2022-11-20 11:53:59,024 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:53:59,025 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 [2022-11-20 11:53:59,026 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 139 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 [2022-11-20 11:53:59,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:53:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 11:53:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 54 states have internal predecessors, (65), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 11:53:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-20 11:53:59,037 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 24 [2022-11-20 11:53:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:59,038 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-20 11:53:59,038 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) [2022-11-20 11:53:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-20 11:53:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:53:59,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:59,040 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] [2022-11-20 11:53:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:53:59,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash -110528575, now seen corresponding path program 1 times [2022-11-20 11:53:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:59,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189778694] [2022-11-20 11:53:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:59,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:53:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:59,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:59,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189778694] [2022-11-20 11:53:59,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189778694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:59,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:59,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:53:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882879908] [2022-11-20 11:53:59,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:59,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:53:59,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:53:59,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:53:59,219 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-11-20 11:53:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:59,320 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2022-11-20 11:53:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:53:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 [2022-11-20 11:53:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:59,322 INFO L225 Difference]: With dead ends: 117 [2022-11-20 11:53:59,323 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:53:59,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:53:59,325 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 104 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:59,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 184 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:53:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 11:53:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 54 states have internal predecessors, (64), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 11:53:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2022-11-20 11:53:59,340 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 29 [2022-11-20 11:53:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:59,340 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2022-11-20 11:53:59,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-11-20 11:53:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2022-11-20 11:53:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:53:59,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:59,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:59,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:53:59,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1402592638, now seen corresponding path program 1 times [2022-11-20 11:53:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388652226] [2022-11-20 11:53:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:53:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:53:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:59,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388652226] [2022-11-20 11:53:59,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388652226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:59,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:59,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607940345] [2022-11-20 11:53:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:59,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:59,441 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:53:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:59,480 INFO L93 Difference]: Finished difference Result 157 states and 201 transitions. [2022-11-20 11:53:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:59,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-20 11:53:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:59,483 INFO L225 Difference]: With dead ends: 157 [2022-11-20 11:53:59,483 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 11:53:59,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:59,485 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 51 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:59,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 11:53:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2022-11-20 11:53:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.294871794871795) internal successors, (101), 85 states have internal predecessors, (101), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-20 11:53:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2022-11-20 11:53:59,509 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 34 [2022-11-20 11:53:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:59,509 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2022-11-20 11:53:59,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:53:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2022-11-20 11:53:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:53:59,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:59,511 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] [2022-11-20 11:53:59,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:53:59,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:59,513 INFO L85 PathProgramCache]: Analyzing trace with hash -741551432, now seen corresponding path program 1 times [2022-11-20 11:53:59,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:59,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984907848] [2022-11-20 11:53:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:59,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:53:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:53:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:59,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984907848] [2022-11-20 11:53:59,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984907848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:59,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:59,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:53:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004367146] [2022-11-20 11:53:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:53:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:53:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:53:59,620 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:53:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:59,674 INFO L93 Difference]: Finished difference Result 228 states and 294 transitions. [2022-11-20 11:53:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:53:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 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 40 [2022-11-20 11:53:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:59,677 INFO L225 Difference]: With dead ends: 228 [2022-11-20 11:53:59,677 INFO L226 Difference]: Without dead ends: 135 [2022-11-20 11:53:59,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:53:59,680 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 45 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:59,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 232 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-20 11:53:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 102. [2022-11-20 11:53:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.2875) internal successors, (103), 87 states have internal predecessors, (103), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-20 11:53:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2022-11-20 11:53:59,703 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 40 [2022-11-20 11:53:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:59,704 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2022-11-20 11:53:59,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:53:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2022-11-20 11:53:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:53:59,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:59,706 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] [2022-11-20 11:53:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:53:59,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1252593274, now seen corresponding path program 1 times [2022-11-20 11:53:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:59,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96278179] [2022-11-20 11:53:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:59,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:53:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:53:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96278179] [2022-11-20 11:53:59,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96278179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:59,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:59,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:53:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41828428] [2022-11-20 11:53:59,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:59,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:53:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:59,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:53:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:53:59,851 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:53:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:59,914 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2022-11-20 11:53:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:53:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2022-11-20 11:53:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:59,917 INFO L225 Difference]: With dead ends: 110 [2022-11-20 11:53:59,917 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 11:53:59,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:53:59,919 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 43 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:59,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 324 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 11:53:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2022-11-20 11:53:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.275) internal successors, (102), 87 states have internal predecessors, (102), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-20 11:53:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2022-11-20 11:53:59,939 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 40 [2022-11-20 11:53:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:59,939 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2022-11-20 11:53:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:53:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2022-11-20 11:53:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:53:59,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:59,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:53:59,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1802322569, now seen corresponding path program 1 times [2022-11-20 11:53:59,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:59,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345028485] [2022-11-20 11:53:59,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:54:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:54:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:54:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:00,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345028485] [2022-11-20 11:54:00,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345028485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:00,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:00,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:54:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884719178] [2022-11-20 11:54:00,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:54:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:54:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:54:00,113 INFO L87 Difference]: Start difference. First operand 102 states and 126 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:54:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:00,187 INFO L93 Difference]: Finished difference Result 221 states and 281 transitions. [2022-11-20 11:54:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:54:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 1 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 46 [2022-11-20 11:54:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:00,189 INFO L225 Difference]: With dead ends: 221 [2022-11-20 11:54:00,189 INFO L226 Difference]: Without dead ends: 126 [2022-11-20 11:54:00,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:00,191 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 42 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:00,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 326 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:54:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-20 11:54:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 105. [2022-11-20 11:54:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 90 states have internal predecessors, (105), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-20 11:54:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 129 transitions. [2022-11-20 11:54:00,221 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 129 transitions. Word has length 46 [2022-11-20 11:54:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:00,222 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 129 transitions. [2022-11-20 11:54:00,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:54:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 129 transitions. [2022-11-20 11:54:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:54:00,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:00,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:54:00,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:54:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1730348677, now seen corresponding path program 1 times [2022-11-20 11:54:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:00,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781389700] [2022-11-20 11:54:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:54:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:54:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:54:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:00,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781389700] [2022-11-20 11:54:00,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781389700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:00,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:00,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972593080] [2022-11-20 11:54:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:00,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:54:00,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:54:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:54:00,370 INFO L87 Difference]: Start difference. First operand 105 states and 129 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:54:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:00,424 INFO L93 Difference]: Finished difference Result 245 states and 305 transitions. [2022-11-20 11:54:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:54:00,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-20 11:54:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:00,430 INFO L225 Difference]: With dead ends: 245 [2022-11-20 11:54:00,430 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 11:54:00,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:54:00,438 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 34 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:00,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 149 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:54:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 11:54:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-20 11:54:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 116 states have (on average 1.2413793103448276) internal successors, (144), 124 states have internal predecessors, (144), 16 states have call successors, (16), 15 states have call predecessors, (16), 14 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 11:54:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 178 transitions. [2022-11-20 11:54:00,483 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 178 transitions. Word has length 46 [2022-11-20 11:54:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:00,484 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 178 transitions. [2022-11-20 11:54:00,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:54:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 178 transitions. [2022-11-20 11:54:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 11:54:00,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:00,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:00,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:54:00,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:54:00,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash -135080021, now seen corresponding path program 1 times [2022-11-20 11:54:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:00,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486605658] [2022-11-20 11:54:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:54:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:54:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:54:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:00,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:00,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486605658] [2022-11-20 11:54:00,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486605658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:00,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:00,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:54:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678947087] [2022-11-20 11:54:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:54:00,748 INFO L87 Difference]: Start difference. First operand 147 states and 178 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:01,158 INFO L93 Difference]: Finished difference Result 526 states and 656 transitions. [2022-11-20 11:54:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:54:01,159 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), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-20 11:54:01,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:01,168 INFO L225 Difference]: With dead ends: 526 [2022-11-20 11:54:01,168 INFO L226 Difference]: Without dead ends: 386 [2022-11-20 11:54:01,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:54:01,174 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 126 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:01,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 371 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:54:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-20 11:54:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 365. [2022-11-20 11:54:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 288 states have (on average 1.2152777777777777) internal successors, (350), 313 states have internal predecessors, (350), 42 states have call successors, (42), 30 states have call predecessors, (42), 34 states have return successors, (55), 40 states have call predecessors, (55), 42 states have call successors, (55) [2022-11-20 11:54:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 447 transitions. [2022-11-20 11:54:01,265 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 447 transitions. Word has length 50 [2022-11-20 11:54:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:01,265 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 447 transitions. [2022-11-20 11:54:01,266 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), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:54:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 447 transitions. [2022-11-20 11:54:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 11:54:01,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:01,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:01,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:54:01,268 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:54:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash -743952113, now seen corresponding path program 1 times [2022-11-20 11:54:01,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:01,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724196703] [2022-11-20 11:54:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:54:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:54:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:54:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:54:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:54:01,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:01,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724196703] [2022-11-20 11:54:01,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724196703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:01,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975374061] [2022-11-20 11:54:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:01,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:01,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:01,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:01,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:54:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:01,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:54:01,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:01,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:54:01,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975374061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:01,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:54:01,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 16 [2022-11-20 11:54:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447323850] [2022-11-20 11:54:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:54:01,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:54:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:54:01,770 INFO L87 Difference]: Start difference. First operand 365 states and 447 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:54:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:01,956 INFO L93 Difference]: Finished difference Result 739 states and 910 transitions. [2022-11-20 11:54:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:54:01,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2022-11-20 11:54:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:01,960 INFO L225 Difference]: With dead ends: 739 [2022-11-20 11:54:01,961 INFO L226 Difference]: Without dead ends: 381 [2022-11-20 11:54:01,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:54:01,963 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 72 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:01,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 741 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:54:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-20 11:54:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 350. [2022-11-20 11:54:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 276 states have (on average 1.1992753623188406) internal successors, (331), 298 states have internal predecessors, (331), 40 states have call successors, (40), 30 states have call predecessors, (40), 33 states have return successors, (48), 38 states have call predecessors, (48), 40 states have call successors, (48) [2022-11-20 11:54:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 419 transitions. [2022-11-20 11:54:02,028 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 419 transitions. Word has length 54 [2022-11-20 11:54:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:02,029 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 419 transitions. [2022-11-20 11:54:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:54:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 419 transitions. [2022-11-20 11:54:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 11:54:02,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:02,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:02,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:02,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:54:02,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:54:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -159739820, now seen corresponding path program 1 times [2022-11-20 11:54:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354237987] [2022-11-20 11:54:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:54:02,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:54:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:54:02,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:54:02,317 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:54:02,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:54:02,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:54:02,324 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:02,328 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:54:02,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:54:02 BoogieIcfgContainer [2022-11-20 11:54:02,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:54:02,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:54:02,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:54:02,395 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:54:02,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:58" (3/4) ... [2022-11-20 11:54:02,397 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:54:02,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:54:02,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:54:02,464 INFO L158 Benchmark]: Toolchain (without parser) took 5665.30ms. Allocated memory was 176.2MB in the beginning and 226.5MB in the end (delta: 50.3MB). Free memory was 141.7MB in the beginning and 104.5MB in the end (delta: 37.1MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. [2022-11-20 11:54:02,464 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 176.2MB. Free memory is still 150.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:54:02,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.56ms. Allocated memory is still 176.2MB. Free memory was 141.3MB in the beginning and 123.1MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:54:02,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.54ms. Allocated memory is still 176.2MB. Free memory was 123.1MB in the beginning and 120.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:54:02,465 INFO L158 Benchmark]: Boogie Preprocessor took 28.29ms. Allocated memory is still 176.2MB. Free memory was 120.7MB in the beginning and 119.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:54:02,466 INFO L158 Benchmark]: RCFGBuilder took 668.59ms. Allocated memory is still 176.2MB. Free memory was 119.1MB in the beginning and 103.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:54:02,466 INFO L158 Benchmark]: TraceAbstraction took 4189.55ms. Allocated memory was 176.2MB in the beginning and 226.5MB in the end (delta: 50.3MB). Free memory was 102.7MB in the beginning and 110.8MB in the end (delta: -8.1MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2022-11-20 11:54:02,466 INFO L158 Benchmark]: Witness Printer took 69.25ms. Allocated memory is still 226.5MB. Free memory was 110.8MB in the beginning and 104.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:54:02,468 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 176.2MB. Free memory is still 150.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.56ms. Allocated memory is still 176.2MB. Free memory was 141.3MB in the beginning and 123.1MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.54ms. Allocated memory is still 176.2MB. Free memory was 123.1MB in the beginning and 120.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.29ms. Allocated memory is still 176.2MB. Free memory was 120.7MB in the beginning and 119.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 668.59ms. Allocated memory is still 176.2MB. Free memory was 119.1MB in the beginning and 103.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4189.55ms. Allocated memory was 176.2MB in the beginning and 226.5MB in the end (delta: 50.3MB). Free memory was 102.7MB in the beginning and 110.8MB in the end (delta: -8.1MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Witness Printer took 69.25ms. Allocated memory is still 226.5MB. Free memory was 110.8MB in the beginning and 104.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 774]: 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; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L591] int pumpRunning = 0; [L592] int systemActive = 1; [L843] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L916] int retValue_acc ; [L917] int tmp ; [L921] FCALL select_helpers() [L922] FCALL select_features() [L923] CALL, EXPR valid_product() [L834] int retValue_acc ; [L837] retValue_acc = 1 [L838] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L923] RET, EXPR valid_product() [L923] tmp = valid_product() [L925] COND TRUE \read(tmp) [L927] FCALL setup() [L928] CALL runTest() [L910] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L542] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L441] COND TRUE waterLevel < 2 [L442] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L542] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L562] CALL startSystem() [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L562] RET startSystem() [L575] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L599] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] COND TRUE \read(systemActive) [L608] CALL processEnvironment() [L628] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE ! pumpRunning [L633] CALL, EXPR isHighWaterLevel() [L743] int retValue_acc ; [L744] int tmp ; [L745] int tmp___0 ; [L749] CALL, EXPR isHighWaterSensorDry() [L503] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(waterLevel < 2) [L510] retValue_acc = 0 [L511] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L749] RET, EXPR isHighWaterSensorDry() [L749] tmp = isHighWaterSensorDry() [L751] COND FALSE !(\read(tmp)) [L754] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L756] retValue_acc = tmp___0 [L757] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L633] RET, EXPR isHighWaterLevel() [L633] tmp = isHighWaterLevel() [L635] COND TRUE \read(tmp) [L637] CALL activatePump() [L662] int tmp ; [L666] CALL, EXPR isMethaneAlarm() [L687] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L691] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L691] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = isMethaneLevelCritical() [L693] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L666] RET, EXPR isMethaneAlarm() [L666] tmp = isMethaneAlarm() [L668] COND FALSE !(\read(tmp)) [L672] CALL activatePump__wrappee__highWaterSensor() [L656] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L672] RET activatePump__wrappee__highWaterSensor() [L637] RET activatePump() [L608] RET processEnvironment() [L614] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L785] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L785] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() [L787] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L614] RET __utac_acc__Specification1_spec__1() [L575] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L538] tmp = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L552] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L453] COND FALSE !(\read(methaneLevelCritical)) [L456] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L552] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L562] CALL startSystem() [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L562] RET startSystem() [L575] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] COND TRUE \read(pumpRunning) [L601] CALL lowerWaterLevel() [L429] COND TRUE waterLevel > 0 [L430] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L601] RET lowerWaterLevel() [L606] COND TRUE \read(systemActive) [L608] CALL processEnvironment() [L628] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L631] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L646] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L608] RET processEnvironment() [L614] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L785] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L785] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L698] int retValue_acc ; [L701] retValue_acc = pumpRunning [L702] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L774] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 546 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 530 mSDsluCounter, 2706 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1799 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 907 mSDtfsCounter, 296 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=365occurred in iteration=9, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 114 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 523 NumberOfCodeBlocks, 523 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 952 SizeOfPredicates, 4 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 13/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 11:54:02,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6929d074-3fe1-45f5-bf49-420c056d8eb5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE