./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73b8e020dd9d30fdd676c81009d4f1b850aa716d63ef29ce3d475a261546f853 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:43:29,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:43:29,712 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:43:29,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:43:29,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:43:29,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:43:29,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:43:29,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:43:29,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:43:29,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:43:29,747 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:43:29,748 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:43:29,748 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:43:29,749 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:43:29,749 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:43:29,750 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:43:29,750 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:43:29,751 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:43:29,751 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:43:29,752 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:43:29,752 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:43:29,753 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:43:29,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:43:29,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:43:29,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:43:29,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:43:29,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:43:29,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:43:29,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:43:29,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:43:29,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:43:29,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:43:29,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:43:29,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:43:29,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:43:29,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:43:29,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:43:29,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:43:29,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:43:29,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:43:29,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:43:29,760 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:43:29,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:43:29,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:43:29,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:43:29,761 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:43:29,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:43:29,761 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73b8e020dd9d30fdd676c81009d4f1b850aa716d63ef29ce3d475a261546f853 [2023-12-02 12:43:29,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:43:30,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:43:30,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:43:30,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:43:30,011 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:43:30,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c [2023-12-02 12:43:32,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:43:33,000 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:43:33,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c [2023-12-02 12:43:33,011 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/data/b9d83d83a/25b02832ab2c4a1c830b93e24f95ea63/FLAGa6dadbca2 [2023-12-02 12:43:33,025 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/data/b9d83d83a/25b02832ab2c4a1c830b93e24f95ea63 [2023-12-02 12:43:33,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:43:33,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:43:33,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:43:33,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:43:33,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:43:33,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b2f05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33, skipping insertion in model container [2023-12-02 12:43:33,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:43:33,303 WARN L240 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_a91d9a97-80d9-4513-88cf-ba4127b7f45a/sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c[15211,15224] [2023-12-02 12:43:33,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:43:33,335 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:43:33,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [49] [2023-12-02 12:43:33,345 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [101] [2023-12-02 12:43:33,345 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [206] [2023-12-02 12:43:33,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [572] [2023-12-02 12:43:33,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [670] [2023-12-02 12:43:33,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [705] [2023-12-02 12:43:33,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [714] [2023-12-02 12:43:33,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [923] [2023-12-02 12:43:33,402 WARN L240 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_a91d9a97-80d9-4513-88cf-ba4127b7f45a/sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c[15211,15224] [2023-12-02 12:43:33,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:43:33,432 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:43:33,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33 WrapperNode [2023-12-02 12:43:33,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:43:33,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:43:33,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:43:33,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:43:33,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,484 INFO L138 Inliner]: procedures = 57, calls = 103, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 214 [2023-12-02 12:43:33,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:43:33,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:43:33,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:43:33,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:43:33,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:43:33,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:43:33,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:43:33,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:43:33,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (1/1) ... [2023-12-02 12:43:33,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:43:33,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:43:33,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:43:33,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:43:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:43:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 12:43:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 12:43:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 12:43:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 12:43:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 12:43:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 12:43:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 12:43:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 12:43:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 12:43:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 12:43:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-12-02 12:43:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-12-02 12:43:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-12-02 12:43:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-12-02 12:43:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:43:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 12:43:33,599 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 12:43:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:43:33,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:43:33,683 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:43:33,685 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:43:33,911 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:43:34,038 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:43:34,038 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:43:34,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:43:34 BoogieIcfgContainer [2023-12-02 12:43:34,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:43:34,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:43:34,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:43:34,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:43:34,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:43:33" (1/3) ... [2023-12-02 12:43:34,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298aaa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:43:34, skipping insertion in model container [2023-12-02 12:43:34,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:33" (2/3) ... [2023-12-02 12:43:34,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298aaa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:43:34, skipping insertion in model container [2023-12-02 12:43:34,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:43:34" (3/3) ... [2023-12-02 12:43:34,050 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2023-12-02 12:43:34,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:43:34,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:43:34,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:43:34,119 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3734940, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:43:34,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:43:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 12:43:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 12:43:34,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:34,131 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:34,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:34,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 841970477, now seen corresponding path program 1 times [2023-12-02 12:43:34,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:34,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752000613] [2023-12-02 12:43:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:34,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:43:34,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752000613] [2023-12-02 12:43:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752000613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:34,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:43:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476764543] [2023-12-02 12:43:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:34,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:43:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:43:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:43:34,373 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:43:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:34,439 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2023-12-02 12:43:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:43:34,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-02 12:43:34,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:34,452 INFO L225 Difference]: With dead ends: 126 [2023-12-02 12:43:34,452 INFO L226 Difference]: Without dead ends: 59 [2023-12-02 12:43:34,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:43:34,460 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:34,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:43:34,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-02 12:43:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-02 12:43:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 12:43:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-12-02 12:43:34,506 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 21 [2023-12-02 12:43:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:34,507 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-12-02 12:43:34,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:43:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-12-02 12:43:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 12:43:34,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:34,510 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:34,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:43:34,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:34,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash 532820126, now seen corresponding path program 1 times [2023-12-02 12:43:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:34,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315375908] [2023-12-02 12:43:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:43:34,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315375908] [2023-12-02 12:43:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315375908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:43:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247250656] [2023-12-02 12:43:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:34,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:43:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:43:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:34,620 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:43:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:34,666 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2023-12-02 12:43:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:43:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-02 12:43:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:34,669 INFO L225 Difference]: With dead ends: 95 [2023-12-02 12:43:34,669 INFO L226 Difference]: Without dead ends: 51 [2023-12-02 12:43:34,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:43:34,672 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:34,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:43:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-02 12:43:34,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-02 12:43:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.3125) internal successors, (42), 39 states have internal predecessors, (42), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 12:43:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-12-02 12:43:34,683 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 22 [2023-12-02 12:43:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:34,683 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-12-02 12:43:34,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 12:43:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-12-02 12:43:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 12:43:34,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:34,686 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:43:34,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:34,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash -195741929, now seen corresponding path program 1 times [2023-12-02 12:43:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:34,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110330847] [2023-12-02 12:43:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:43:34,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:34,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110330847] [2023-12-02 12:43:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110330847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:34,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:34,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 12:43:34,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127790576] [2023-12-02 12:43:34,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:34,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:43:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:43:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:43:34,875 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:43:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:35,348 INFO L93 Difference]: Finished difference Result 194 states and 253 transitions. [2023-12-02 12:43:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 12:43:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-12-02 12:43:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:35,352 INFO L225 Difference]: With dead ends: 194 [2023-12-02 12:43:35,352 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 12:43:35,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-12-02 12:43:35,355 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 104 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:35,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 354 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:43:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 12:43:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2023-12-02 12:43:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 102 states have internal predecessors, (113), 26 states have call successors, (26), 22 states have call predecessors, (26), 23 states have return successors, (38), 25 states have call predecessors, (38), 26 states have call successors, (38) [2023-12-02 12:43:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 177 transitions. [2023-12-02 12:43:35,384 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 177 transitions. Word has length 24 [2023-12-02 12:43:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:35,384 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 177 transitions. [2023-12-02 12:43:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:43:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 177 transitions. [2023-12-02 12:43:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 12:43:35,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:35,387 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 12:43:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:43:35,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:35,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash -426780873, now seen corresponding path program 1 times [2023-12-02 12:43:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673190297] [2023-12-02 12:43:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:43:35,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:35,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673190297] [2023-12-02 12:43:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673190297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:35,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:35,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:43:35,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910582629] [2023-12-02 12:43:35,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:35,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:43:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:43:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:43:35,637 INFO L87 Difference]: Start difference. First operand 141 states and 177 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:43:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:35,908 INFO L93 Difference]: Finished difference Result 457 states and 598 transitions. [2023-12-02 12:43:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:43:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2023-12-02 12:43:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:35,914 INFO L225 Difference]: With dead ends: 457 [2023-12-02 12:43:35,914 INFO L226 Difference]: Without dead ends: 318 [2023-12-02 12:43:35,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:43:35,917 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 146 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:35,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 223 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:43:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-02 12:43:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 270. [2023-12-02 12:43:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 176 states have (on average 1.2386363636363635) internal successors, (218), 195 states have internal predecessors, (218), 50 states have call successors, (50), 43 states have call predecessors, (50), 43 states have return successors, (77), 45 states have call predecessors, (77), 50 states have call successors, (77) [2023-12-02 12:43:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 345 transitions. [2023-12-02 12:43:35,967 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 345 transitions. Word has length 36 [2023-12-02 12:43:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:35,968 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 345 transitions. [2023-12-02 12:43:35,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 12:43:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 345 transitions. [2023-12-02 12:43:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 12:43:35,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:35,971 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 12:43:35,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:43:35,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:35,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash -523997626, now seen corresponding path program 1 times [2023-12-02 12:43:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:35,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059565428] [2023-12-02 12:43:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:43:36,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059565428] [2023-12-02 12:43:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059565428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:36,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:36,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 12:43:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341592228] [2023-12-02 12:43:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:36,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:43:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:43:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:43:36,233 INFO L87 Difference]: Start difference. First operand 270 states and 345 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 12:43:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:36,757 INFO L93 Difference]: Finished difference Result 673 states and 885 transitions. [2023-12-02 12:43:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 12:43:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 39 [2023-12-02 12:43:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:36,763 INFO L225 Difference]: With dead ends: 673 [2023-12-02 12:43:36,763 INFO L226 Difference]: Without dead ends: 515 [2023-12-02 12:43:36,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-02 12:43:36,765 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 155 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:36,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 308 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:43:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-02 12:43:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 456. [2023-12-02 12:43:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 301 states have (on average 1.2358803986710964) internal successors, (372), 334 states have internal predecessors, (372), 82 states have call successors, (82), 66 states have call predecessors, (82), 72 states have return successors, (131), 79 states have call predecessors, (131), 82 states have call successors, (131) [2023-12-02 12:43:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 585 transitions. [2023-12-02 12:43:36,820 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 585 transitions. Word has length 39 [2023-12-02 12:43:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:36,821 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 585 transitions. [2023-12-02 12:43:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 12:43:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 585 transitions. [2023-12-02 12:43:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 12:43:36,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:36,825 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 12:43:36,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:43:36,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:36,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:36,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2107567404, now seen corresponding path program 1 times [2023-12-02 12:43:36,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:36,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950859176] [2023-12-02 12:43:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:36,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:43:36,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950859176] [2023-12-02 12:43:36,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950859176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:36,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:36,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:43:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668412953] [2023-12-02 12:43:36,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:36,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:43:36,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:43:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:43:36,916 INFO L87 Difference]: Start difference. First operand 456 states and 585 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 12:43:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:37,029 INFO L93 Difference]: Finished difference Result 841 states and 1094 transitions. [2023-12-02 12:43:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:43:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-12-02 12:43:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:37,032 INFO L225 Difference]: With dead ends: 841 [2023-12-02 12:43:37,032 INFO L226 Difference]: Without dead ends: 401 [2023-12-02 12:43:37,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:43:37,035 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:37,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 91 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:43:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-02 12:43:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 397. [2023-12-02 12:43:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 258 states have (on average 1.2054263565891472) internal successors, (311), 289 states have internal predecessors, (311), 73 states have call successors, (73), 62 states have call predecessors, (73), 65 states have return successors, (114), 67 states have call predecessors, (114), 73 states have call successors, (114) [2023-12-02 12:43:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 498 transitions. [2023-12-02 12:43:37,078 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 498 transitions. Word has length 56 [2023-12-02 12:43:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:37,078 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 498 transitions. [2023-12-02 12:43:37,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 12:43:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 498 transitions. [2023-12-02 12:43:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 12:43:37,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:37,082 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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] [2023-12-02 12:43:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:43:37,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:37,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1138379186, now seen corresponding path program 1 times [2023-12-02 12:43:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218326630] [2023-12-02 12:43:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 12:43:37,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218326630] [2023-12-02 12:43:37,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218326630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:37,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:37,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 12:43:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593897892] [2023-12-02 12:43:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:43:37,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:43:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:43:37,246 INFO L87 Difference]: Start difference. First operand 397 states and 498 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-02 12:43:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:37,525 INFO L93 Difference]: Finished difference Result 716 states and 928 transitions. [2023-12-02 12:43:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 12:43:37,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 67 [2023-12-02 12:43:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:37,529 INFO L225 Difference]: With dead ends: 716 [2023-12-02 12:43:37,529 INFO L226 Difference]: Without dead ends: 419 [2023-12-02 12:43:37,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:43:37,531 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 118 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:37,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 114 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:43:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-02 12:43:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 397. [2023-12-02 12:43:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 258 states have (on average 1.193798449612403) internal successors, (308), 289 states have internal predecessors, (308), 73 states have call successors, (73), 62 states have call predecessors, (73), 65 states have return successors, (114), 67 states have call predecessors, (114), 73 states have call successors, (114) [2023-12-02 12:43:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 495 transitions. [2023-12-02 12:43:37,573 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 495 transitions. Word has length 67 [2023-12-02 12:43:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:37,573 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 495 transitions. [2023-12-02 12:43:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-02 12:43:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 495 transitions. [2023-12-02 12:43:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 12:43:37,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:37,576 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 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] [2023-12-02 12:43:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:43:37,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:37,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash -385320818, now seen corresponding path program 1 times [2023-12-02 12:43:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:43:37,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911744212] [2023-12-02 12:43:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:43:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:43:37,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:43:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911744212] [2023-12-02 12:43:37,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911744212] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:43:37,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908258637] [2023-12-02 12:43:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:37,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:43:37,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:43:37,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:43:37,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:43:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:38,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 12:43:38,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 12:43:38,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:43:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 12:43:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908258637] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:43:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [269180529] [2023-12-02 12:43:39,230 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 12:43:39,230 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:43:39,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:43:39,237 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:43:39,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:43:47,534 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 34 for LOIs [2023-12-02 12:43:47,543 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-12-02 12:43:48,677 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 18 for LOIs [2023-12-02 12:43:48,679 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 22 for LOIs [2023-12-02 12:43:48,781 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2023-12-02 12:43:48,784 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 22 for LOIs [2023-12-02 12:43:48,786 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:43:52,994 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7298#(and (<= |old(~waterLevel~0)| 2147483647) (<= 1 |#StackHeapBarrier|) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= ~head~0.base 0) (= ~switchedOnBeforeTS~0 0) (or (and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= |old(~waterLevel~0)| ~waterLevel~0) (exists ((|v_processEnvironment__wrappee__methaneQuery_isHighWaterLevel_#res#1_BEFORE_RETURN_3| Int) (|v_processEnvironment__wrappee__methaneQuery_~tmp~5#1_BEFORE_RETURN_3| Int) (|v_processEnvironment__wrappee__methaneQuery_isHighWaterSensorDry_#res#1_BEFORE_RETURN_3| Int)) (and (= |v_processEnvironment__wrappee__methaneQuery_isHighWaterLevel_#res#1_BEFORE_RETURN_3| 1) (= |v_processEnvironment__wrappee__methaneQuery_~tmp~5#1_BEFORE_RETURN_3| 1) (<= 2 ~waterLevel~0) (= |v_processEnvironment__wrappee__methaneQuery_isHighWaterSensorDry_#res#1_BEFORE_RETURN_3| 0) (exists ((|v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret39#1_23| Int)) (and (= |v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret39#1_23| 0) (= ~pumpRunning~0 1))))) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2))) (and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (exists ((|v_processEnvironment__wrappee__methaneQuery_isHighWaterSensorDry_#res#1_BEFORE_RETURN_4| Int) (|v_processEnvironment__wrappee__methaneQuery_isHighWaterLevel_#res#1_BEFORE_RETURN_4| Int) (|v_processEnvironment__wrappee__methaneQuery_~tmp~5#1_BEFORE_RETURN_4| Int)) (and (= |v_processEnvironment__wrappee__methaneQuery_isHighWaterLevel_#res#1_BEFORE_RETURN_4| 1) (<= 2 ~waterLevel~0) (exists ((|v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret39#1_23| Int)) (and (= |v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret39#1_23| 0) (= ~pumpRunning~0 1))) (= |v_processEnvironment__wrappee__methaneQuery_~tmp~5#1_BEFORE_RETURN_4| 1) (= |v_processEnvironment__wrappee__methaneQuery_isHighWaterSensorDry_#res#1_BEFORE_RETURN_4| 0))) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= |old(~waterLevel~0)| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2)))) (= ~cleanupTimeShifts~0 4) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2023-12-02 12:43:52,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:43:52,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:43:52,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 26 [2023-12-02 12:43:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91463133] [2023-12-02 12:43:52,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:43:52,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 12:43:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:43:52,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 12:43:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2989, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 12:43:52,999 INFO L87 Difference]: Start difference. First operand 397 states and 495 transitions. Second operand has 26 states, 24 states have (on average 4.5) internal successors, (108), 26 states have internal predecessors, (108), 14 states have call successors, (30), 9 states have call predecessors, (30), 11 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2023-12-02 12:43:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:54,371 INFO L93 Difference]: Finished difference Result 813 states and 1052 transitions. [2023-12-02 12:43:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-02 12:43:54,371 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.5) internal successors, (108), 26 states have internal predecessors, (108), 14 states have call successors, (30), 9 states have call predecessors, (30), 11 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) Word has length 72 [2023-12-02 12:43:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:54,372 INFO L225 Difference]: With dead ends: 813 [2023-12-02 12:43:54,372 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 12:43:54,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=981, Invalid=6675, Unknown=0, NotChecked=0, Total=7656 [2023-12-02 12:43:54,379 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 609 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:54,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 505 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:43:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 12:43:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 12:43:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:43:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 12:43:54,381 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2023-12-02 12:43:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:54,381 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 12:43:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.5) internal successors, (108), 26 states have internal predecessors, (108), 14 states have call successors, (30), 9 states have call predecessors, (30), 11 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2023-12-02 12:43:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 12:43:54,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 12:43:54,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 12:43:54,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:43:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 12:43:54,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 12:43:56,680 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 748 754) no Hoare annotation was computed. [2023-12-02 12:43:56,681 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 748 754) the Hoare annotation is: true [2023-12-02 12:43:56,681 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 603 614) the Hoare annotation is: true [2023-12-02 12:43:56,681 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 603 614) no Hoare annotation was computed. [2023-12-02 12:43:56,681 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 91) no Hoare annotation was computed. [2023-12-02 12:43:56,681 INFO L895 garLoopResultBuilder]: At program point L796(line 796) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (<= ~waterLevel~0 1)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse0 (not (= |old(~waterLevel~0)| 2))) (.cse1 (= 0 ~systemActive~0)) (.cse5 (and .cse2 (or (< ~waterLevel~0 1) (< ~waterLevel~0 |old(~waterLevel~0)|)) (not (= ~pumpRunning~0 0)) .cse3 (<= ~waterLevel~0 |old(~waterLevel~0)|) .cse4))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4)) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or (< 1 |old(~waterLevel~0)|) .cse1 .cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (<= 2 |old(~waterLevel~0)|) .cse1 .cse5)))) [2023-12-02 12:43:56,681 INFO L895 garLoopResultBuilder]: At program point L788(line 788) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (<= ~waterLevel~0 1)) (.cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse0 (not (= |old(~waterLevel~0)| 2))) (.cse1 (= 0 ~systemActive~0)) (.cse5 (and .cse2 (or (< ~waterLevel~0 1) (< ~waterLevel~0 |old(~waterLevel~0)|)) (not (= ~pumpRunning~0 0)) .cse3 (<= ~waterLevel~0 |old(~waterLevel~0)|) .cse4))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4)) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or (< 1 |old(~waterLevel~0)|) .cse1 .cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (<= 2 |old(~waterLevel~0)|) .cse1 .cse5)))) [2023-12-02 12:43:56,681 INFO L899 garLoopResultBuilder]: For program point L788-1(line 788) no Hoare annotation was computed. [2023-12-02 12:43:56,682 INFO L895 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (let ((.cse3 (= ~switchedOnBeforeTS~0 0))) (let ((.cse6 (not .cse3)) (.cse9 (= ~pumpRunning~0 0)) (.cse7 (<= ~waterLevel~0 1)) (.cse8 (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |old(~waterLevel~0)|)) (.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse10)) (.cse4 (and .cse9 .cse7 .cse10 (= |old(~waterLevel~0)| ~waterLevel~0) .cse8 .cse3)) (.cse5 (and .cse6 .cse7 (or .cse9 (< ~waterLevel~0 1) (< ~waterLevel~0 |old(~waterLevel~0)|)) (<= ~waterLevel~0 |old(~waterLevel~0)|) .cse8)) (.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2 .cse3) (or .cse4 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse5 (<= 2 |old(~waterLevel~0)|) .cse2) (or .cse4 (< 1 |old(~waterLevel~0)|) .cse5 .cse2 (= |old(~switchedOnBeforeTS~0)| 0)) (or (and .cse6 .cse7 .cse8) .cse1 .cse2))))) [2023-12-02 12:43:56,682 INFO L899 garLoopResultBuilder]: For program point L82-1(line 82) no Hoare annotation was computed. [2023-12-02 12:43:56,682 INFO L899 garLoopResultBuilder]: For program point L710(line 710) no Hoare annotation was computed. [2023-12-02 12:43:56,682 INFO L895 garLoopResultBuilder]: At program point L801(line 801) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (= ~switchedOnBeforeTS~0 0)) (.cse3 (= 0 ~systemActive~0))) (let ((.cse4 (< 1 |old(~waterLevel~0)|)) (.cse5 (and .cse0 (<= ~waterLevel~0 1) .cse1 (= |old(~waterLevel~0)| ~waterLevel~0) .cse2 (not .cse3)))) (and (or (not (= |old(~waterLevel~0)| 2)) (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) .cse3) (or .cse4 .cse3 .cse5 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse4 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse3 .cse5)))) [2023-12-02 12:43:56,682 INFO L899 garLoopResultBuilder]: For program point L801-1(lines 782 806) no Hoare annotation was computed. [2023-12-02 12:43:56,682 INFO L899 garLoopResultBuilder]: For program point L735-1(lines 735 741) no Hoare annotation was computed. [2023-12-02 12:43:56,682 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 721 747) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse7 (not (= |old(~waterLevel~0)| 2)))) (let ((.cse2 (and (<= 2 |old(~waterLevel~0)|) .cse7)) (.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse4 (< 1 |old(~waterLevel~0)|)) (.cse5 (and .cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse3 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or (not (= ~switchedOnBeforeTS~0 0)) .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse5 .cse1) (or .cse4 .cse5 .cse1 .cse3) (or (and .cse6 (= 2 ~waterLevel~0)) .cse7 .cse1)))) [2023-12-02 12:43:56,683 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse7 (not (= |old(~waterLevel~0)| 2)))) (let ((.cse2 (and (<= 2 |old(~waterLevel~0)|) .cse7)) (.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse4 (< 1 |old(~waterLevel~0)|)) (.cse5 (and .cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse3 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or (not (= ~switchedOnBeforeTS~0 0)) .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse5 .cse1) (or .cse4 .cse5 .cse1 .cse3) (or (and .cse6 (= 2 ~waterLevel~0)) .cse7 .cse1)))) [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L728-2(lines 724 746) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L790(lines 790 798) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 94) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L786(lines 786 803) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 97) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 72 100) no Hoare annotation was computed. [2023-12-02 12:43:56,683 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 721 747) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 710) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L899 garLoopResultBuilder]: For program point L129(lines 104 133) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 104 133) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 122) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L902 garLoopResultBuilder]: At program point L118-1(lines 118 122) the Hoare annotation is: true [2023-12-02 12:43:56,684 INFO L902 garLoopResultBuilder]: At program point L114-2(lines 114 128) the Hoare annotation is: true [2023-12-02 12:43:56,684 INFO L902 garLoopResultBuilder]: At program point L110(line 110) the Hoare annotation is: true [2023-12-02 12:43:56,684 INFO L899 garLoopResultBuilder]: For program point L110-1(line 110) no Hoare annotation was computed. [2023-12-02 12:43:56,684 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 104 133) the Hoare annotation is: true [2023-12-02 12:43:56,685 INFO L895 garLoopResultBuilder]: At program point L956(line 956) the Hoare annotation is: (let ((.cse0 (= 2 ~waterLevel~0))) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~1#1| 1)) (.cse4 (or .cse0 (< ~waterLevel~0 2)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse1 .cse2 .cse3 .cse4)))) [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L985(lines 924 989) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L944(lines 944 950) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L944-1(lines 944 950) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L193(lines 193 200) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L193-2(lines 193 200) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L895 garLoopResultBuilder]: At program point L982(lines 933 983) the Hoare annotation is: false [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L954(lines 954 960) no Hoare annotation was computed. [2023-12-02 12:43:56,685 INFO L899 garLoopResultBuilder]: For program point L954-1(lines 954 960) no Hoare annotation was computed. [2023-12-02 12:43:56,686 INFO L895 garLoopResultBuilder]: At program point L979(lines 934 981) the Hoare annotation is: (let ((.cse0 (<= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~1#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse1 .cse2 .cse3))) [2023-12-02 12:43:56,686 INFO L895 garLoopResultBuilder]: At program point L946(line 946) the Hoare annotation is: (let ((.cse0 (<= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~1#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse1 .cse2 .cse3))) [2023-12-02 12:43:56,686 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 12:43:56,686 INFO L895 garLoopResultBuilder]: At program point L972-2(lines 964 977) the Hoare annotation is: (let ((.cse0 (= 2 ~waterLevel~0))) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~1#1| 1)) (.cse4 (or .cse0 (< ~waterLevel~0 2)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse1 .cse2 .cse3 .cse4)))) [2023-12-02 12:43:56,686 INFO L899 garLoopResultBuilder]: For program point L935(lines 934 981) no Hoare annotation was computed. [2023-12-02 12:43:56,686 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 591 602) no Hoare annotation was computed. [2023-12-02 12:43:56,686 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 591 602) the Hoare annotation is: (let ((.cse0 (< 1 |old(~waterLevel~0)|)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1 .cse2) (or (= 2 ~waterLevel~0) (not (= |old(~waterLevel~0)| 2)) .cse2) (or .cse0 .cse1 .cse2 (= ~switchedOnBeforeTS~0 0)))) [2023-12-02 12:43:56,686 INFO L899 garLoopResultBuilder]: For program point L764(lines 764 772) no Hoare annotation was computed. [2023-12-02 12:43:56,686 INFO L899 garLoopResultBuilder]: For program point L760(lines 760 777) no Hoare annotation was computed. [2023-12-02 12:43:56,687 INFO L895 garLoopResultBuilder]: At program point L820(line 820) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (< 1 ~waterLevel~0) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_~tmp~5#1| 1)) (not (= 2 ~waterLevel~0)) .cse0 .cse1))) [2023-12-02 12:43:56,687 INFO L899 garLoopResultBuilder]: For program point L820-1(line 820) no Hoare annotation was computed. [2023-12-02 12:43:56,687 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 756 780) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (= 2 ~waterLevel~0)) .cse0 .cse1) (or (< 1 ~waterLevel~0) .cse0 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse1))) [2023-12-02 12:43:56,687 INFO L895 garLoopResultBuilder]: At program point L775(line 775) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (< 1 ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 (not (= 2 ~waterLevel~0)) .cse1 .cse2) (or .cse0 .cse3 .cse1 .cse2) (or .cse3 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse2))) [2023-12-02 12:43:56,687 INFO L899 garLoopResultBuilder]: For program point L775-1(lines 756 780) no Hoare annotation was computed. [2023-12-02 12:43:56,687 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 756 780) no Hoare annotation was computed. [2023-12-02 12:43:56,687 INFO L895 garLoopResultBuilder]: At program point L770(line 770) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_~tmp~5#1| 0) (<= ~waterLevel~0 1)) (and (not (= ~waterLevel~0 1)) (not (= 2 ~waterLevel~0)) (<= 1 ~waterLevel~0)) .cse0 .cse1) (or (< 1 ~waterLevel~0) .cse0 (= ~switchedOnBeforeTS~0 0) .cse1))) [2023-12-02 12:43:56,687 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 851 859) no Hoare annotation was computed. [2023-12-02 12:43:56,688 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 851 859) the Hoare annotation is: true [2023-12-02 12:43:56,688 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 840 850) no Hoare annotation was computed. [2023-12-02 12:43:56,688 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 840 850) the Hoare annotation is: true [2023-12-02 12:43:56,690 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:56,692 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:43:56,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:43:56 BoogieIcfgContainer [2023-12-02 12:43:56,702 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:43:56,703 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:43:56,703 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:43:56,703 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:43:56,703 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:43:34" (3/4) ... [2023-12-02 12:43:56,705 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 12:43:56,708 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 12:43:56,708 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 12:43:56,708 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 12:43:56,708 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 12:43:56,709 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 12:43:56,709 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2023-12-02 12:43:56,709 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2023-12-02 12:43:56,709 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2023-12-02 12:43:56,715 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2023-12-02 12:43:56,716 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 12:43:56,717 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 12:43:56,717 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 12:43:56,718 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 12:43:56,829 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:43:56,829 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 12:43:56,829 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:43:56,830 INFO L158 Benchmark]: Toolchain (without parser) took 23801.11ms. Allocated memory was 148.9MB in the beginning and 467.7MB in the end (delta: 318.8MB). Free memory was 108.8MB in the beginning and 165.7MB in the end (delta: -56.9MB). Peak memory consumption was 263.7MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,831 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:43:56,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.96ms. Allocated memory is still 148.9MB. Free memory was 108.8MB in the beginning and 89.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.88ms. Allocated memory is still 148.9MB. Free memory was 89.1MB in the beginning and 86.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,832 INFO L158 Benchmark]: Boogie Preprocessor took 30.45ms. Allocated memory is still 148.9MB. Free memory was 86.7MB in the beginning and 85.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,832 INFO L158 Benchmark]: RCFGBuilder took 523.23ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 85.1MB in the beginning and 166.5MB in the end (delta: -81.4MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,832 INFO L158 Benchmark]: TraceAbstraction took 22659.48ms. Allocated memory was 203.4MB in the beginning and 467.7MB in the end (delta: 264.2MB). Free memory was 165.4MB in the beginning and 173.1MB in the end (delta: -7.7MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,833 INFO L158 Benchmark]: Witness Printer took 126.82ms. Allocated memory is still 467.7MB. Free memory was 173.1MB in the beginning and 165.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 12:43:56,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.96ms. Allocated memory is still 148.9MB. Free memory was 108.8MB in the beginning and 89.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.88ms. Allocated memory is still 148.9MB. Free memory was 89.1MB in the beginning and 86.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.45ms. Allocated memory is still 148.9MB. Free memory was 86.7MB in the beginning and 85.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 523.23ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 85.1MB in the beginning and 166.5MB in the end (delta: -81.4MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22659.48ms. Allocated memory was 203.4MB in the beginning and 467.7MB in the end (delta: 264.2MB). Free memory was 165.4MB in the beginning and 173.1MB in the end (delta: -7.7MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. * Witness Printer took 126.82ms. Allocated memory is still 467.7MB. Free memory was 173.1MB in the beginning and 165.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [49] - GenericResultAtLocation [Line: 101]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [101] - GenericResultAtLocation [Line: 206]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [206] - GenericResultAtLocation [Line: 572]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [572] - GenericResultAtLocation [Line: 670]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [670] - GenericResultAtLocation [Line: 705]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [705] - GenericResultAtLocation [Line: 714]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [714] - GenericResultAtLocation [Line: 923]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [923] * 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 - PositiveResult [Line: 710]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1229 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1199 mSDsluCounter, 1750 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1267 mSDsCounter, 594 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2129 IncrementalHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 594 mSolverCounterUnsat, 483 mSDtfsCounter, 2129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 346 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=5, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 137 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 830 PreInvPairs, 912 NumberOfFragments, 1031 HoareAnnotationTreeSize, 830 FomulaSimplifications, 4486 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 7217 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 1436 SizeOfPredicates, 12 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 132/164 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 840]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 933]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 114]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 934]: Loop Invariant Derived loop invariant: (((((((waterLevel <= 1) && (1 == systemActive)) && (splverifierCounter == 0)) && (tmp == 1)) && (pumpRunning == switchedOnBeforeTS)) || ((((!((switchedOnBeforeTS == 0)) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0)) && (tmp == 1))) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (tmp == 1))) RESULT: Ultimate proved your program to be correct! [2023-12-02 12:43:56,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a91d9a97-80d9-4513-88cf-ba4127b7f45a/bin/utaipan-verify-nQ1chXbOIh/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 Result: TRUE