./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8 --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 23f15893fb26009b2882a55698a2d895d2e3e404fcbd45ba17e1cf64b2b2b34e --- 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-2329fc7 [2022-12-13 11:46:01,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:46:01,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:46:01,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:46:01,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:46:01,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:46:01,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:46:01,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:46:01,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:46:01,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:46:01,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:46:01,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:46:01,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:46:01,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:46:01,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:46:01,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:46:01,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:46:01,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:46:01,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:46:01,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:46:01,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:46:01,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:46:01,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:46:01,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:46:01,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:46:01,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:46:01,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:46:01,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:46:01,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:46:01,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:46:01,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:46:01,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:46:01,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:46:01,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:46:01,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:46:01,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:46:01,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:46:01,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:46:01,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:46:01,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:46:01,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:46:01,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:46:01,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:46:01,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:46:01,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:46:01,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:46:01,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:46:01,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:46:01,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:46:01,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:46:01,542 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:46:01,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:46:01,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:46:01,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:46:01,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:46:01,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:46:01,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:46:01,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:46:01,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:46:01,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:46:01,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:46:01,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:46:01,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:46:01,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:46:01,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:46:01,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:46:01,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:46:01,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:46:01,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:46:01,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:46:01,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:46:01,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:46:01,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:46:01,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:46:01,547 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:46:01,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:46:01,547 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:46:01,547 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f15893fb26009b2882a55698a2d895d2e3e404fcbd45ba17e1cf64b2b2b34e [2022-12-13 11:46:01,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:46:01,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:46:01,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:46:01,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:46:01,748 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:46:01,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2022-12-13 11:46:04,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:46:04,609 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:46:04,609 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2022-12-13 11:46:04,619 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/data/deaf1038b/83f648cec17c4e28a44efac4687d957c/FLAGcc0ce3a10 [2022-12-13 11:46:04,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/data/deaf1038b/83f648cec17c4e28a44efac4687d957c [2022-12-13 11:46:04,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:46:04,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:46:04,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:46:04,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:46:04,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:46:04,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:04,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53614ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04, skipping insertion in model container [2022-12-13 11:46:04,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:04,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:46:04,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:46:04,896 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_32d04b91-af04-4616-b8ff-ddb78c336a1d/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[17055,17068] [2022-12-13 11:46:04,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:46:04,916 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:46:04,973 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_32d04b91-af04-4616-b8ff-ddb78c336a1d/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[17055,17068] [2022-12-13 11:46:04,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:46:04,994 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:46:04,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04 WrapperNode [2022-12-13 11:46:04,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:46:04,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:46:04,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:46:04,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:46:05,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,041 INFO L138 Inliner]: procedures = 55, calls = 97, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 189 [2022-12-13 11:46:05,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:46:05,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:46:05,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:46:05,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:46:05,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:46:05,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:46:05,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:46:05,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:46:05,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (1/1) ... [2022-12-13 11:46:05,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:46:05,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:05,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:46:05,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:46:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:46:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-12-13 11:46:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-12-13 11:46:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-12-13 11:46:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-12-13 11:46:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 11:46:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 11:46:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 11:46:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 11:46:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-12-13 11:46:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-12-13 11:46:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:46:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-12-13 11:46:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-12-13 11:46:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:46:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:46:05,198 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:46:05,200 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:46:05,392 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:46:05,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:46:05,400 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:46:05,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:46:05 BoogieIcfgContainer [2022-12-13 11:46:05,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:46:05,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:46:05,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:46:05,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:46:05,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:46:04" (1/3) ... [2022-12-13 11:46:05,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5460a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:46:05, skipping insertion in model container [2022-12-13 11:46:05,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:46:04" (2/3) ... [2022-12-13 11:46:05,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5460a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:46:05, skipping insertion in model container [2022-12-13 11:46:05,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:46:05" (3/3) ... [2022-12-13 11:46:05,408 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2022-12-13 11:46:05,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:46:05,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:46:05,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:46:05,463 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;@142efe2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:46:05,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:46:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 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) [2022-12-13 11:46:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 11:46:05,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:05,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:05,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1298361785, now seen corresponding path program 1 times [2022-12-13 11:46:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:05,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318427855] [2022-12-13 11:46:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:05,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:46:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:05,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318427855] [2022-12-13 11:46:05,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318427855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:05,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138660387] [2022-12-13 11:46:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:46:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:46:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:46:05,681 INFO L87 Difference]: Start difference. First operand has 82 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:46:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:05,713 INFO L93 Difference]: Finished difference Result 155 states and 212 transitions. [2022-12-13 11:46:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:46:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-12-13 11:46:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:05,721 INFO L225 Difference]: With dead ends: 155 [2022-12-13 11:46:05,721 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 11:46:05,723 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 [2022-12-13 11:46:05,725 INFO L413 NwaCegarLoop]: 103 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, 103 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 [2022-12-13 11:46:05,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 11:46:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-12-13 11:46:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 62 states have internal predecessors, (75), 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) [2022-12-13 11:46:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2022-12-13 11:46:05,755 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 25 [2022-12-13 11:46:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:05,756 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2022-12-13 11:46:05,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:46:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2022-12-13 11:46:05,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 11:46:05,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:05,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:05,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:46:05,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -544570962, now seen corresponding path program 1 times [2022-12-13 11:46:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:05,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592849479] [2022-12-13 11:46:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 11:46:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:05,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592849479] [2022-12-13 11:46:05,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592849479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:05,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:05,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:05,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782614648] [2022-12-13 11:46:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:05,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:05,847 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:46:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:05,859 INFO L93 Difference]: Finished difference Result 110 states and 142 transitions. [2022-12-13 11:46:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:05,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-12-13 11:46:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:05,861 INFO L225 Difference]: With dead ends: 110 [2022-12-13 11:46:05,861 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 11:46:05,862 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 [2022-12-13 11:46:05,863 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 13 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 145 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 [2022-12-13 11:46:05,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 145 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 11:46:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-13 11:46:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 56 states have internal predecessors, (68), 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) [2022-12-13 11:46:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2022-12-13 11:46:05,870 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 26 [2022-12-13 11:46:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:05,870 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2022-12-13 11:46:05,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:46:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2022-12-13 11:46:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 11:46:05,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:05,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:46:05,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:05,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2042208755, now seen corresponding path program 1 times [2022-12-13 11:46:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:05,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114252020] [2022-12-13 11:46:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:05,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 11:46:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:05,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:05,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114252020] [2022-12-13 11:46:05,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114252020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:05,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:05,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:46:05,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453209858] [2022-12-13 11:46:05,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:05,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:46:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:46:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:46:05,999 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:46:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,055 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2022-12-13 11:46:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:46:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-12-13 11:46:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,057 INFO L225 Difference]: With dead ends: 120 [2022-12-13 11:46:06,057 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 11:46:06,058 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 [2022-12-13 11:46:06,058 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 109 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 191 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 [2022-12-13 11:46:06,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 191 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 11:46:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-13 11:46:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 56 states have internal predecessors, (67), 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) [2022-12-13 11:46:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2022-12-13 11:46:06,066 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 31 [2022-12-13 11:46:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,066 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2022-12-13 11:46:06,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:46:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2022-12-13 11:46:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 11:46:06,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:06,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:46:06,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1332459068, now seen corresponding path program 1 times [2022-12-13 11:46:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923644795] [2022-12-13 11:46:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 11:46:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 11:46:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:06,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:06,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923644795] [2022-12-13 11:46:06,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923644795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:06,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:06,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:06,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659088713] [2022-12-13 11:46:06,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:06,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:06,143 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-12-13 11:46:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,170 INFO L93 Difference]: Finished difference Result 161 states and 208 transitions. [2022-12-13 11:46:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 36 [2022-12-13 11:46:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,173 INFO L225 Difference]: With dead ends: 161 [2022-12-13 11:46:06,173 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 11:46:06,174 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 [2022-12-13 11:46:06,176 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 53 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 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 [2022-12-13 11:46:06,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 11:46:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2022-12-13 11:46:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.308641975308642) internal successors, (106), 88 states have internal predecessors, (106), 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) [2022-12-13 11:46:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2022-12-13 11:46:06,196 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 36 [2022-12-13 11:46:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2022-12-13 11:46:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-12-13 11:46:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2022-12-13 11:46:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 11:46:06,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:06,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:46:06,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash -491826932, now seen corresponding path program 1 times [2022-12-13 11:46:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297826955] [2022-12-13 11:46:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 11:46:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:46:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:06,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:06,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297826955] [2022-12-13 11:46:06,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297826955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:06,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:06,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:46:06,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360469884] [2022-12-13 11:46:06,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:46:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:46:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:46:06,316 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-12-13 11:46:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,361 INFO L93 Difference]: Finished difference Result 203 states and 260 transitions. [2022-12-13 11:46:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:46:06,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 42 [2022-12-13 11:46:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,363 INFO L225 Difference]: With dead ends: 203 [2022-12-13 11:46:06,363 INFO L226 Difference]: Without dead ends: 108 [2022-12-13 11:46:06,363 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 [2022-12-13 11:46:06,365 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 43 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 335 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 [2022-12-13 11:46:06,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 335 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-13 11:46:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2022-12-13 11:46:06,374 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) [2022-12-13 11:46:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2022-12-13 11:46:06,374 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 42 [2022-12-13 11:46:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,375 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2022-12-13 11:46:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-12-13 11:46:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2022-12-13 11:46:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 11:46:06,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,376 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] [2022-12-13 11:46:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:46:06,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash 552716463, now seen corresponding path program 1 times [2022-12-13 11:46:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238513567] [2022-12-13 11:46:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 11:46:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 11:46:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:46:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238513567] [2022-12-13 11:46:06,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238513567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:06,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:06,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:46:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165065355] [2022-12-13 11:46:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:46:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:46:06,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:46:06,431 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-12-13 11:46:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,470 INFO L93 Difference]: Finished difference Result 220 states and 282 transitions. [2022-12-13 11:46:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:46:06,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 48 [2022-12-13 11:46:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,472 INFO L225 Difference]: With dead ends: 220 [2022-12-13 11:46:06,472 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 11:46:06,473 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 [2022-12-13 11:46:06,473 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 33 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 355 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 [2022-12-13 11:46:06,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 355 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:06,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 11:46:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 105. [2022-12-13 11:46:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.2771084337349397) internal successors, (106), 90 states have internal predecessors, (106), 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) [2022-12-13 11:46:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2022-12-13 11:46:06,483 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 48 [2022-12-13 11:46:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,484 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2022-12-13 11:46:06,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-12-13 11:46:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2022-12-13 11:46:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 11:46:06,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,485 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] [2022-12-13 11:46:06,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:46:06,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash 693265073, now seen corresponding path program 1 times [2022-12-13 11:46:06,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060623103] [2022-12-13 11:46:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 11:46:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 11:46:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:46:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060623103] [2022-12-13 11:46:06,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060623103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:06,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:06,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 11:46:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490889508] [2022-12-13 11:46:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:46:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:46:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:46:06,555 INFO L87 Difference]: Start difference. First operand 105 states and 130 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-12-13 11:46:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,602 INFO L93 Difference]: Finished difference Result 229 states and 292 transitions. [2022-12-13 11:46:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:46:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 48 [2022-12-13 11:46:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,604 INFO L225 Difference]: With dead ends: 229 [2022-12-13 11:46:06,604 INFO L226 Difference]: Without dead ends: 132 [2022-12-13 11:46:06,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:46:06,605 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 74 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:06,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 399 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-13 11:46:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2022-12-13 11:46:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 92 states have internal predecessors, (108), 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) [2022-12-13 11:46:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2022-12-13 11:46:06,615 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 48 [2022-12-13 11:46:06,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,615 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2022-12-13 11:46:06,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-12-13 11:46:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2022-12-13 11:46:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 11:46:06,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,616 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] [2022-12-13 11:46:06,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:46:06,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1678474189, now seen corresponding path program 1 times [2022-12-13 11:46:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824135142] [2022-12-13 11:46:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 11:46:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 11:46:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:46:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:06,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824135142] [2022-12-13 11:46:06,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824135142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:06,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:06,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042781095] [2022-12-13 11:46:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:06,664 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-12-13 11:46:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,687 INFO L93 Difference]: Finished difference Result 248 states and 310 transitions. [2022-12-13 11:46:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 48 [2022-12-13 11:46:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,689 INFO L225 Difference]: With dead ends: 248 [2022-12-13 11:46:06,689 INFO L226 Difference]: Without dead ends: 149 [2022-12-13 11:46:06,689 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 [2022-12-13 11:46:06,690 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 34 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 154 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 [2022-12-13 11:46:06,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 154 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-13 11:46:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-12-13 11:46:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 118 states have (on average 1.2457627118644068) internal successors, (147), 126 states have internal predecessors, (147), 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) [2022-12-13 11:46:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 181 transitions. [2022-12-13 11:46:06,711 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 181 transitions. Word has length 48 [2022-12-13 11:46:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,711 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 181 transitions. [2022-12-13 11:46:06,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-12-13 11:46:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 181 transitions. [2022-12-13 11:46:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 11:46:06,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,712 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] [2022-12-13 11:46:06,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:46:06,713 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1903900979, now seen corresponding path program 1 times [2022-12-13 11:46:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161304201] [2022-12-13 11:46:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:46:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:46:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 11:46:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:46:06,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:06,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161304201] [2022-12-13 11:46:06,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161304201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:06,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:06,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:46:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435270279] [2022-12-13 11:46:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:46:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:46:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:46:06,764 INFO L87 Difference]: Start difference. First operand 149 states and 181 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 11:46:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:06,886 INFO L93 Difference]: Finished difference Result 318 states and 401 transitions. [2022-12-13 11:46:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:46:06,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2022-12-13 11:46:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:06,888 INFO L225 Difference]: With dead ends: 318 [2022-12-13 11:46:06,889 INFO L226 Difference]: Without dead ends: 316 [2022-12-13 11:46:06,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:46:06,889 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 128 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:06,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 212 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:46:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-12-13 11:46:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 302. [2022-12-13 11:46:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 242 states have (on average 1.2479338842975207) internal successors, (302), 264 states have internal predecessors, (302), 34 states have call successors, (34), 22 states have call predecessors, (34), 25 states have return successors, (47), 31 states have call predecessors, (47), 34 states have call successors, (47) [2022-12-13 11:46:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 383 transitions. [2022-12-13 11:46:06,915 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 383 transitions. Word has length 52 [2022-12-13 11:46:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:06,915 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 383 transitions. [2022-12-13 11:46:06,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 11:46:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 383 transitions. [2022-12-13 11:46:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 11:46:06,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:06,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2022-12-13 11:46:06,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:46:06,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1105031866, now seen corresponding path program 1 times [2022-12-13 11:46:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:06,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706194698] [2022-12-13 11:46:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:46:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 11:46:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 11:46:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 11:46:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:46:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:46:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 11:46:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706194698] [2022-12-13 11:46:07,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706194698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593907937] [2022-12-13 11:46:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:07,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:07,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:46:07,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:46:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:07,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:46:07,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:46:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 11:46:07,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:46:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 11:46:07,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593907937] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:07,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:46:07,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 5] total 13 [2022-12-13 11:46:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10328217] [2022-12-13 11:46:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:46:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:46:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:46:07,656 INFO L87 Difference]: Start difference. First operand 302 states and 383 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 11:46:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:07,780 INFO L93 Difference]: Finished difference Result 867 states and 1126 transitions. [2022-12-13 11:46:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:46:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 84 [2022-12-13 11:46:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:07,784 INFO L225 Difference]: With dead ends: 867 [2022-12-13 11:46:07,784 INFO L226 Difference]: Without dead ends: 573 [2022-12-13 11:46:07,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:46:07,786 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 47 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:07,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 384 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:46:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-12-13 11:46:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 477. [2022-12-13 11:46:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 378 states have (on average 1.2275132275132274) internal successors, (464), 413 states have internal predecessors, (464), 55 states have call successors, (55), 37 states have call predecessors, (55), 43 states have return successors, (77), 51 states have call predecessors, (77), 55 states have call successors, (77) [2022-12-13 11:46:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 596 transitions. [2022-12-13 11:46:07,840 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 596 transitions. Word has length 84 [2022-12-13 11:46:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:07,841 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 596 transitions. [2022-12-13 11:46:07,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 11:46:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 596 transitions. [2022-12-13 11:46:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 11:46:07,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:07,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2022-12-13 11:46:07,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:46:08,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:08,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -138549802, now seen corresponding path program 1 times [2022-12-13 11:46:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:08,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280137294] [2022-12-13 11:46:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:46:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:46:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:46:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 11:46:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 11:46:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:46:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 11:46:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 11:46:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:08,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280137294] [2022-12-13 11:46:08,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280137294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:08,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284558089] [2022-12-13 11:46:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:08,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:08,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:08,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:46:08,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:46:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:46:08,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:46:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:46:08,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:46:08,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284558089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:08,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:46:08,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 20 [2022-12-13 11:46:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144156354] [2022-12-13 11:46:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:46:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:46:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:46:08,465 INFO L87 Difference]: Start difference. First operand 477 states and 596 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 11:46:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:08,608 INFO L93 Difference]: Finished difference Result 962 states and 1218 transitions. [2022-12-13 11:46:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:46:08,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 88 [2022-12-13 11:46:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:08,611 INFO L225 Difference]: With dead ends: 962 [2022-12-13 11:46:08,611 INFO L226 Difference]: Without dead ends: 493 [2022-12-13 11:46:08,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:46:08,613 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 68 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:08,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 701 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:46:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-12-13 11:46:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 392. [2022-12-13 11:46:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 310 states have (on average 1.2161290322580645) internal successors, (377), 333 states have internal predecessors, (377), 44 states have call successors, (44), 34 states have call predecessors, (44), 37 states have return successors, (56), 42 states have call predecessors, (56), 44 states have call successors, (56) [2022-12-13 11:46:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 477 transitions. [2022-12-13 11:46:08,645 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 477 transitions. Word has length 88 [2022-12-13 11:46:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:08,646 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 477 transitions. [2022-12-13 11:46:08,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 11:46:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 477 transitions. [2022-12-13 11:46:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 11:46:08,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:08,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:08,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:46:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:08,849 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:08,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1845093653, now seen corresponding path program 1 times [2022-12-13 11:46:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:08,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823334523] [2022-12-13 11:46:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:08,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:46:08,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:46:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:46:08,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:46:08,902 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:46:08,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 11:46:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:46:08,907 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:08,910 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:46:08,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:46:08 BoogieIcfgContainer [2022-12-13 11:46:08,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:46:08,978 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:46:08,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:46:08,978 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:46:08,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:46:05" (3/4) ... [2022-12-13 11:46:08,980 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 11:46:09,049 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:46:09,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:46:09,050 INFO L158 Benchmark]: Toolchain (without parser) took 4415.98ms. Allocated memory is still 216.0MB. Free memory was 184.2MB in the beginning and 71.9MB in the end (delta: 112.3MB). Peak memory consumption was 113.4MB. Max. memory is 16.1GB. [2022-12-13 11:46:09,050 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:46:09,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.57ms. Allocated memory is still 216.0MB. Free memory was 184.2MB in the beginning and 165.6MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 11:46:09,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.82ms. Allocated memory is still 216.0MB. Free memory was 165.6MB in the beginning and 163.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:46:09,051 INFO L158 Benchmark]: Boogie Preprocessor took 26.61ms. Allocated memory is still 216.0MB. Free memory was 163.5MB in the beginning and 162.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:46:09,051 INFO L158 Benchmark]: RCFGBuilder took 332.14ms. Allocated memory is still 216.0MB. Free memory was 162.3MB in the beginning and 145.9MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 11:46:09,052 INFO L158 Benchmark]: TraceAbstraction took 3573.97ms. Allocated memory is still 216.0MB. Free memory was 145.5MB in the beginning and 80.3MB in the end (delta: 65.2MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2022-12-13 11:46:09,052 INFO L158 Benchmark]: Witness Printer took 72.24ms. Allocated memory is still 216.0MB. Free memory was 80.3MB in the beginning and 71.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 11:46:09,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.57ms. Allocated memory is still 216.0MB. Free memory was 184.2MB in the beginning and 165.6MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.82ms. Allocated memory is still 216.0MB. Free memory was 165.6MB in the beginning and 163.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.61ms. Allocated memory is still 216.0MB. Free memory was 163.5MB in the beginning and 162.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 332.14ms. Allocated memory is still 216.0MB. Free memory was 162.3MB in the beginning and 145.9MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3573.97ms. Allocated memory is still 216.0MB. Free memory was 145.5MB in the beginning and 80.3MB in the end (delta: 65.2MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * Witness Printer took 72.24ms. Allocated memory is still 216.0MB. Free memory was 80.3MB in the beginning and 71.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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: 854]: 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; [L496] int pumpRunning = 0; [L497] int systemActive = 1; [L676] int methAndRunningLastTime ; [L753] int cleanupTimeShifts = 4; [L860] int waterLevel = 1; [L861] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L827] int retValue_acc ; [L828] int tmp ; [L832] FCALL select_helpers() [L833] FCALL select_features() [L834] CALL, EXPR valid_product() [L744] int retValue_acc ; [L747] retValue_acc = 1 [L748] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L834] RET, EXPR valid_product() [L834] tmp = valid_product() [L836] COND TRUE \read(tmp) [L838] FCALL setup() [L839] CALL runTest() [L820] CALL __utac_acc__Specification2_spec__1() [L681] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L820] RET __utac_acc__Specification2_spec__1() [L821] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L431] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L433] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L443] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] COND TRUE waterLevel < 2 [L879] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L443] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L670] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L463] RET startSystem() [L476] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L504] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L511] COND TRUE \read(systemActive) [L513] CALL processEnvironment() [L533] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L536] COND TRUE ! pumpRunning [L538] CALL, EXPR isHighWaterLevel() [L648] int retValue_acc ; [L649] int tmp ; [L650] int tmp___0 ; [L654] CALL, EXPR isHighWaterSensorDry() [L940] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L943] COND FALSE !(waterLevel < 2) [L947] retValue_acc = 0 [L948] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L654] RET, EXPR isHighWaterSensorDry() [L654] tmp = isHighWaterSensorDry() [L656] COND FALSE !(\read(tmp)) [L659] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L661] retValue_acc = tmp___0 [L662] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L538] RET, EXPR isHighWaterLevel() [L538] tmp = isHighWaterLevel() [L540] COND TRUE \read(tmp) [L542] CALL activatePump() [L567] int tmp ; [L571] CALL, EXPR isMethaneAlarm() [L592] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L596] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] retValue_acc = isMethaneLevelCritical() [L598] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L571] RET, EXPR isMethaneAlarm() [L571] tmp = isMethaneAlarm() [L573] COND FALSE !(\read(tmp)) [L577] CALL activatePump__wrappee__highWaterSensor() [L561] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L577] RET activatePump__wrappee__highWaterSensor() [L542] RET activatePump() [L513] RET processEnvironment() [L519] CALL __utac_acc__Specification2_spec__2() [L686] int tmp ; [L687] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L691] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L691] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L691] tmp = isMethaneLevelCritical() [L693] COND FALSE !(\read(tmp)) [L709] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L519] RET __utac_acc__Specification2_spec__2() [L476] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L431] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L433] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L453] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L890] COND FALSE !(\read(methaneLevelCritical)) [L893] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L453] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L670] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L463] RET startSystem() [L476] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L504] COND TRUE \read(pumpRunning) [L506] CALL lowerWaterLevel() [L866] COND TRUE waterLevel > 0 [L867] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L506] RET lowerWaterLevel() [L511] COND TRUE \read(systemActive) [L513] CALL processEnvironment() [L533] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L536] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L551] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L513] RET processEnvironment() [L519] CALL __utac_acc__Specification2_spec__2() [L686] int tmp ; [L687] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L691] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L691] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L691] tmp = isMethaneLevelCritical() [L693] COND TRUE \read(tmp) [L695] CALL, EXPR isPumpRunning() [L603] int retValue_acc ; [L606] retValue_acc = pumpRunning [L607] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L695] RET, EXPR isPumpRunning() [L695] tmp___0 = isPumpRunning() [L697] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L698] COND FALSE !(\read(methAndRunningLastTime)) [L703] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L519] RET __utac_acc__Specification2_spec__2() [L476] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=1] [L431] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=1] [L433] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=1] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=1] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L670] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L463] RET startSystem() [L476] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L504] COND TRUE \read(pumpRunning) [L506] CALL lowerWaterLevel() [L866] COND TRUE waterLevel > 0 [L867] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L506] RET lowerWaterLevel() [L511] COND TRUE \read(systemActive) [L513] CALL processEnvironment() [L533] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L536] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L551] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L513] RET processEnvironment() [L519] CALL __utac_acc__Specification2_spec__2() [L686] int tmp ; [L687] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L691] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L691] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L691] tmp = isMethaneLevelCritical() [L693] COND TRUE \read(tmp) [L695] CALL, EXPR isPumpRunning() [L603] int retValue_acc ; [L606] retValue_acc = pumpRunning [L607] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L695] RET, EXPR isPumpRunning() [L695] tmp___0 = isPumpRunning() [L697] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L698] COND TRUE \read(methAndRunningLastTime) [L700] CALL __automaton_fail() [L854] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 619 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 602 mSDsluCounter, 3126 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2079 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 296 IncrementalHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 1047 mSDtfsCounter, 296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 388 GetRequests, 324 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=477occurred in iteration=10, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 265 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 2040 SizeOfPredicates, 6 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 152/162 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! [2022-12-13 11:46:09,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d04b91-af04-4616-b8ff-ddb78c336a1d/bin/uautomizer-uyxdKDjOR8/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