./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5 --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 4c4adbf609ddd472cb6a462753c6f5cc9af64c97af02da4060f4102700285790 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:35:09,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:35:09,893 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:35:09,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:35:09,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:35:09,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:35:09,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:35:09,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:35:09,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:35:09,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:35:09,929 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:35:09,930 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:35:09,931 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:35:09,931 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:35:09,932 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:35:09,932 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:35:09,933 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:35:09,934 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:35:09,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:35:09,935 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:35:09,935 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:35:09,936 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:35:09,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:35:09,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:35:09,938 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:35:09,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:35:09,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:35:09,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:35:09,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:35:09,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:35:09,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:35:09,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:35:09,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:35:09,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:35:09,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:35:09,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:35:09,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:35:09,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:35:09,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:35:09,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:35:09,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:35:09,945 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:35:09,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:35:09,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:35:09,945 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:35:09,946 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:35:09,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:35:09,946 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_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c4adbf609ddd472cb6a462753c6f5cc9af64c97af02da4060f4102700285790 [2023-11-21 19:35:10,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:35:10,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:35:10,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:35:10,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:35:10,311 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:35:10,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c [2023-11-21 19:35:13,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:35:13,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:35:13,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c [2023-11-21 19:35:13,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/data/239cf9dd8/96ade62b1d3c487ca432cf3f96173cd7/FLAG3588b8069 [2023-11-21 19:35:13,893 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/data/239cf9dd8/96ade62b1d3c487ca432cf3f96173cd7 [2023-11-21 19:35:13,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:35:13,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:35:13,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:35:13,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:35:13,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:35:13,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:35:13" (1/1) ... [2023-11-21 19:35:13,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162afa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:13, skipping insertion in model container [2023-11-21 19:35:13,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:35:13" (1/1) ... [2023-11-21 19:35:13,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:35:14,294 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_8e52f562-2129-4397-88ee-a76cbb79dfc9/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c[8617,8630] [2023-11-21 19:35:14,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:35:14,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:35:14,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [49] [2023-11-21 19:35:14,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [87] [2023-11-21 19:35:14,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [186] [2023-11-21 19:35:14,425 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [288] [2023-11-21 19:35:14,425 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [485] [2023-11-21 19:35:14,425 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [550] [2023-11-21 19:35:14,425 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [585] [2023-11-21 19:35:14,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [594] [2023-11-21 19:35:14,451 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_8e52f562-2129-4397-88ee-a76cbb79dfc9/sv-benchmarks/c/product-lines/minepump_spec3_product45.cil.c[8617,8630] [2023-11-21 19:35:14,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:35:14,527 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:35:14,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14 WrapperNode [2023-11-21 19:35:14,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:35:14,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:35:14,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:35:14,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:35:14,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,586 INFO L138 Inliner]: procedures = 54, calls = 100, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 197 [2023-11-21 19:35:14,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:35:14,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:35:14,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:35:14,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:35:14,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:35:14,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:35:14,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:35:14,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:35:14,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (1/1) ... [2023-11-21 19:35:14,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:35:14,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:35:14,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:35:14,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:35:14,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:35:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-21 19:35:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-21 19:35:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 19:35:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 19:35:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 19:35:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 19:35:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-21 19:35:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-21 19:35:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-21 19:35:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-21 19:35:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:35:14,738 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:35:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-21 19:35:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-21 19:35:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:35:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-21 19:35:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-21 19:35:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:35:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:35:14,845 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:35:14,848 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:35:15,195 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:35:15,369 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:35:15,370 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:35:15,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:35:15 BoogieIcfgContainer [2023-11-21 19:35:15,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:35:15,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:35:15,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:35:15,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:35:15,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:35:13" (1/3) ... [2023-11-21 19:35:15,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177ce778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:35:15, skipping insertion in model container [2023-11-21 19:35:15,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:35:14" (2/3) ... [2023-11-21 19:35:15,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177ce778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:35:15, skipping insertion in model container [2023-11-21 19:35:15,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:35:15" (3/3) ... [2023-11-21 19:35:15,381 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product45.cil.c [2023-11-21 19:35:15,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:35:15,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:35:15,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:35:15,458 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;@2f72b934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:35:15,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:35:15,464 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) [2023-11-21 19:35:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:35:15,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:15,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:15,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:15,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash -265713626, now seen corresponding path program 1 times [2023-11-21 19:35:15,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:15,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696892113] [2023-11-21 19:35:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:15,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:35:15,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696892113] [2023-11-21 19:35:15,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696892113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:15,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:15,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:35:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381281795] [2023-11-21 19:35:15,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:35:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:35:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:35:15,777 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:35:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:15,863 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2023-11-21 19:35:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:35:15,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-21 19:35:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:15,875 INFO L225 Difference]: With dead ends: 126 [2023-11-21 19:35:15,876 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 19:35:15,880 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 [2023-11-21 19:35:15,884 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:15,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:35:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 19:35:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 19:35:15,943 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) [2023-11-21 19:35:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-11-21 19:35:15,958 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 17 [2023-11-21 19:35:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:15,960 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-11-21 19:35:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:35:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-11-21 19:35:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:35:15,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:15,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:15,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:35:15,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:15,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash -61871314, now seen corresponding path program 1 times [2023-11-21 19:35:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:15,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87589728] [2023-11-21 19:35:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:15,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:35:16,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87589728] [2023-11-21 19:35:16,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87589728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:16,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:16,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:35:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888490032] [2023-11-21 19:35:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:16,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:35:16,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:35:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:35:16,112 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:35:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:16,169 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2023-11-21 19:35:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:35:16,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-21 19:35:16,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:16,171 INFO L225 Difference]: With dead ends: 95 [2023-11-21 19:35:16,171 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 19:35:16,172 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 [2023-11-21 19:35:16,174 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:16,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:35:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 19:35:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-21 19:35:16,183 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) [2023-11-21 19:35:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-21 19:35:16,184 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 18 [2023-11-21 19:35:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:16,185 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-21 19:35:16,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:35:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-21 19:35:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 19:35:16,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:16,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:16,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:35:16,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:16,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 432361810, now seen corresponding path program 1 times [2023-11-21 19:35:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:16,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209986823] [2023-11-21 19:35:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:35:16,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:16,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209986823] [2023-11-21 19:35:16,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209986823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:16,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:16,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:35:16,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686678385] [2023-11-21 19:35:16,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:16,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:35:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:16,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:35:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:35:16,424 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:35:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:16,498 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2023-11-21 19:35:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:35:16,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-21 19:35:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:16,501 INFO L225 Difference]: With dead ends: 100 [2023-11-21 19:35:16,501 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 19:35:16,502 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 [2023-11-21 19:35:16,504 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:16,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 47 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:35:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 19:35:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-21 19:35:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.28125) internal successors, (41), 39 states have internal predecessors, (41), 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) [2023-11-21 19:35:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-11-21 19:35:16,516 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2023-11-21 19:35:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:16,517 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-11-21 19:35:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:35:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-11-21 19:35:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 19:35:16,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:16,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:35:16,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:16,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:16,521 INFO L85 PathProgramCache]: Analyzing trace with hash -27015136, now seen corresponding path program 1 times [2023-11-21 19:35:16,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:16,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614586507] [2023-11-21 19:35:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:16,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:35:16,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614586507] [2023-11-21 19:35:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614586507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:16,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:35:16,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540012291] [2023-11-21 19:35:16,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:16,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:35:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:35:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:35:16,691 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:35:16,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:16,960 INFO L93 Difference]: Finished difference Result 165 states and 204 transitions. [2023-11-21 19:35:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:35:16,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2023-11-21 19:35:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:16,963 INFO L225 Difference]: With dead ends: 165 [2023-11-21 19:35:16,964 INFO L226 Difference]: Without dead ends: 116 [2023-11-21 19:35:16,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:35:16,966 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 116 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:16,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 147 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:35:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-21 19:35:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2023-11-21 19:35:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 80 states have internal predecessors, (92), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-21 19:35:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2023-11-21 19:35:16,991 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 30 [2023-11-21 19:35:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:16,991 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2023-11-21 19:35:16,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:35:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2023-11-21 19:35:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:35:16,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:16,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:16,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:35:16,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:16,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1065653864, now seen corresponding path program 1 times [2023-11-21 19:35:16,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:16,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720074458] [2023-11-21 19:35:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:35:17,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720074458] [2023-11-21 19:35:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720074458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:17,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:17,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:35:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179153157] [2023-11-21 19:35:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:35:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:35:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:35:17,305 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:35:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:17,515 INFO L93 Difference]: Finished difference Result 322 states and 396 transitions. [2023-11-21 19:35:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:35:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-21 19:35:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:17,538 INFO L225 Difference]: With dead ends: 322 [2023-11-21 19:35:17,538 INFO L226 Difference]: Without dead ends: 214 [2023-11-21 19:35:17,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:35:17,540 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 89 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:17,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 164 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:35:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-21 19:35:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 206. [2023-11-21 19:35:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 137 states have (on average 1.218978102189781) internal successors, (167), 148 states have internal predecessors, (167), 34 states have call successors, (34), 28 states have call predecessors, (34), 34 states have return successors, (44), 36 states have call predecessors, (44), 34 states have call successors, (44) [2023-11-21 19:35:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 245 transitions. [2023-11-21 19:35:17,603 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 245 transitions. Word has length 31 [2023-11-21 19:35:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:17,604 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 245 transitions. [2023-11-21 19:35:17,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:35:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 245 transitions. [2023-11-21 19:35:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 19:35:17,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:17,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:35:17,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:17,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash 117679332, now seen corresponding path program 1 times [2023-11-21 19:35:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637226113] [2023-11-21 19:35:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:35:17,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637226113] [2023-11-21 19:35:17,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637226113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:17,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:17,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:35:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132621382] [2023-11-21 19:35:17,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:17,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:35:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:17,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:35:17,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:35:17,829 INFO L87 Difference]: Start difference. First operand 206 states and 245 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 19:35:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:17,987 INFO L93 Difference]: Finished difference Result 408 states and 498 transitions. [2023-11-21 19:35:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:35:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-11-21 19:35:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:17,992 INFO L225 Difference]: With dead ends: 408 [2023-11-21 19:35:17,992 INFO L226 Difference]: Without dead ends: 300 [2023-11-21 19:35:17,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:35:17,994 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 79 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:17,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 136 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:35:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-21 19:35:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 288. [2023-11-21 19:35:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 192 states have (on average 1.1979166666666667) internal successors, (230), 206 states have internal predecessors, (230), 48 states have call successors, (48), 40 states have call predecessors, (48), 47 states have return successors, (63), 50 states have call predecessors, (63), 48 states have call successors, (63) [2023-11-21 19:35:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 341 transitions. [2023-11-21 19:35:18,058 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 341 transitions. Word has length 34 [2023-11-21 19:35:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:18,058 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 341 transitions. [2023-11-21 19:35:18,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 19:35:18,059 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 341 transitions. [2023-11-21 19:35:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 19:35:18,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:18,065 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] [2023-11-21 19:35:18,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:35:18,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:18,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1505259602, now seen corresponding path program 1 times [2023-11-21 19:35:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436871555] [2023-11-21 19:35:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:35:18,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436871555] [2023-11-21 19:35:18,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436871555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:35:18,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:35:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 19:35:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659556022] [2023-11-21 19:35:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:35:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 19:35:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 19:35:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:35:18,336 INFO L87 Difference]: Start difference. First operand 288 states and 341 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 19:35:18,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:18,951 INFO L93 Difference]: Finished difference Result 960 states and 1175 transitions. [2023-11-21 19:35:18,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 19:35:18,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-21 19:35:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:18,961 INFO L225 Difference]: With dead ends: 960 [2023-11-21 19:35:18,961 INFO L226 Difference]: Without dead ends: 629 [2023-11-21 19:35:18,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-21 19:35:18,969 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 149 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:18,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 708 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:35:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-11-21 19:35:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 604. [2023-11-21 19:35:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 399 states have (on average 1.1829573934837092) internal successors, (472), 424 states have internal predecessors, (472), 106 states have call successors, (106), 90 states have call predecessors, (106), 98 states have return successors, (154), 103 states have call predecessors, (154), 106 states have call successors, (154) [2023-11-21 19:35:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 732 transitions. [2023-11-21 19:35:19,079 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 732 transitions. Word has length 39 [2023-11-21 19:35:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:19,080 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 732 transitions. [2023-11-21 19:35:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 19:35:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 732 transitions. [2023-11-21 19:35:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-21 19:35:19,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:35:19,088 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:19,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:35:19,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:35:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:35:19,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1796690061, now seen corresponding path program 1 times [2023-11-21 19:35:19,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:35:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935915033] [2023-11-21 19:35:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:35:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-21 19:35:19,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:35:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935915033] [2023-11-21 19:35:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935915033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:35:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009342775] [2023-11-21 19:35:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:35:19,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:35:19,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:35:19,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:35:19,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:35:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:35:19,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 19:35:19,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:35:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 19:35:20,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:35:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 19:35:20,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009342775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:35:20,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668928410] [2023-11-21 19:35:20,617 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-21 19:35:20,617 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:35:20,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:35:20,628 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:35:20,628 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:35:24,924 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2023-11-21 19:35:24,979 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 148 for LOIs [2023-11-21 19:35:28,511 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 148 for LOIs [2023-11-21 19:35:29,042 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 7 for LOIs [2023-11-21 19:35:29,103 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 149 for LOIs [2023-11-21 19:35:29,249 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:35:47,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5313#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (<= 1 |#StackHeapBarrier|) (= ~pumpRunning~0 0) (exists ((|v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret15#1_26| Int)) (and (not (= |v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret15#1_26| 0)) (<= 0 (+ |v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret15#1_26| 2147483648)) (<= |v_processEnvironment__wrappee__methaneQuery_activatePump_#t~ret15#1_26| 2147483647))) (= (select |#valid| 9) 1) (= 2 ~waterLevel~0) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= |timeShift_isPumpRunning_#res#1| 0) (= 30 (select |#length| 4)) (= 2 |timeShift_getWaterLevel_#res#1|) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 0 |timeShift___utac_acc__Specification3_spec__1_~tmp___1~0#1|) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= |timeShift___utac_acc__Specification3_spec__1_~tmp~0#1| 0) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_5| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_5|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_5| 2147483647) (or (and (<= |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_5| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~1#1_BEFORE_CALL_5| 2147483648))) (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_5| 0))))) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (exists ((|v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_10| Int)) (and (not (= |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_10| 0)) (<= |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_10| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_10| 2147483648)))) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= |old(~waterLevel~0)| 2) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= 2 |timeShift___utac_acc__Specification3_spec__1_~tmp___0~0#1|))' at error location [2023-11-21 19:35:47,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:35:47,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:35:47,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2023-11-21 19:35:47,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872604920] [2023-11-21 19:35:47,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:35:47,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-21 19:35:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:35:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-21 19:35:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 19:35:47,996 INFO L87 Difference]: Start difference. First operand 604 states and 732 transitions. Second operand has 23 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 11 states have call successors, (25), 8 states have call predecessors, (25), 9 states have return successors, (23), 13 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-21 19:35:51,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:35:51,829 INFO L93 Difference]: Finished difference Result 2017 states and 2627 transitions. [2023-11-21 19:35:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-21 19:35:51,831 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 11 states have call successors, (25), 8 states have call predecessors, (25), 9 states have return successors, (23), 13 states have call predecessors, (23), 10 states have call successors, (23) Word has length 67 [2023-11-21 19:35:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:35:51,833 INFO L225 Difference]: With dead ends: 2017 [2023-11-21 19:35:51,833 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 19:35:51,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 171 SyntacticMatches, 10 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5742 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=2060, Invalid=13192, Unknown=0, NotChecked=0, Total=15252 [2023-11-21 19:35:51,853 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 783 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:35:51,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 661 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 19:35:51,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 19:35:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 19:35:51,858 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) [2023-11-21 19:35:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 19:35:51,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2023-11-21 19:35:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:35:51,861 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 19:35:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 11 states have call successors, (25), 8 states have call predecessors, (25), 9 states have return successors, (23), 13 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-21 19:35:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 19:35:51,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 19:35:51,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:35:51,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:35:52,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 19:35:52,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 19:35:54,968 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 318 324) no Hoare annotation was computed. [2023-11-21 19:35:54,968 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 318 324) the Hoare annotation is: true [2023-11-21 19:35:54,968 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 119 130) the Hoare annotation is: true [2023-11-21 19:35:54,968 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 119 130) no Hoare annotation was computed. [2023-11-21 19:35:54,968 INFO L895 garLoopResultBuilder]: At program point L366(line 366) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 1)) (.cse2 (not (= |old(~pumpRunning~0)| 1)))) (and (or (and (= ~waterLevel~0 1) .cse0) .cse1 .cse2 (not (= |old(~waterLevel~0)| 2))) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 (< 2 |old(~waterLevel~0)|)) (or (< 1 |old(~waterLevel~0)|) .cse1 (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0))) .cse0) .cse2))) [2023-11-21 19:35:54,968 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 79) no Hoare annotation was computed. [2023-11-21 19:35:54,969 INFO L895 garLoopResultBuilder]: At program point L358(line 358) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 1)) (.cse2 (not (= |old(~pumpRunning~0)| 1)))) (and (or (and (= ~waterLevel~0 1) .cse0) .cse1 .cse2 (not (= |old(~waterLevel~0)| 2))) (or (not (= |old(~pumpRunning~0)| 0)) .cse1 (< 2 |old(~waterLevel~0)|)) (or (< 1 |old(~waterLevel~0)|) .cse1 (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0))) .cse0) .cse2))) [2023-11-21 19:35:54,969 INFO L899 garLoopResultBuilder]: For program point L358-1(line 358) no Hoare annotation was computed. [2023-11-21 19:35:54,969 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 82) no Hoare annotation was computed. [2023-11-21 19:35:54,969 INFO L899 garLoopResultBuilder]: For program point L69-1(lines 54 86) no Hoare annotation was computed. [2023-11-21 19:35:54,969 INFO L895 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: (let ((.cse11 (= ~methaneLevelCritical~0 0)) (.cse9 (= ~pumpRunning~0 1))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (or (not .cse11) .cse9)) (.cse2 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse11)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (< 1 |old(~waterLevel~0)|)) (.cse3 (not (= 1 ~systemActive~0))) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not (= |old(~pumpRunning~0)| 1))) (.cse6 (= ~pumpRunning~0 0))) (and (or .cse0 (and (= 2 ~waterLevel~0) .cse1 .cse2) .cse3 .cse4) (or .cse5 .cse0 (and .cse6 .cse7) .cse3 (and .cse1 .cse7 .cse2)) (let ((.cse8 (= ~waterLevel~0 1))) (or (and .cse8 .cse9) .cse3 .cse10 (and .cse6 .cse8) .cse4)) (or .cse5 .cse3 (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse7)) .cse9) .cse10 (and .cse6 (<= ~waterLevel~0 1)))))) [2023-11-21 19:35:54,969 INFO L899 garLoopResultBuilder]: For program point L61-1(line 61) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L895 garLoopResultBuilder]: At program point L371(line 371) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse1))) [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L371-1(lines 352 376) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L305-1(lines 305 311) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L590(line 590) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 294 317) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1 (and .cse2 (= ~pumpRunning~0 1))) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse2) .cse0 .cse1))) [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L298-1(lines 297 316) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L360(lines 360 368) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L356(lines 356 373) no Hoare annotation was computed. [2023-11-21 19:35:54,970 INFO L899 garLoopResultBuilder]: For program point L63(lines 63 83) no Hoare annotation was computed. [2023-11-21 19:35:54,971 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 294 317) no Hoare annotation was computed. [2023-11-21 19:35:54,971 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 590) no Hoare annotation was computed. [2023-11-21 19:35:54,971 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 189 218) no Hoare annotation was computed. [2023-11-21 19:35:54,972 INFO L899 garLoopResultBuilder]: For program point L214(lines 189 218) no Hoare annotation was computed. [2023-11-21 19:35:54,972 INFO L899 garLoopResultBuilder]: For program point L210(line 210) no Hoare annotation was computed. [2023-11-21 19:35:54,972 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 207) no Hoare annotation was computed. [2023-11-21 19:35:54,972 INFO L902 garLoopResultBuilder]: At program point L203-1(lines 203 207) the Hoare annotation is: true [2023-11-21 19:35:54,972 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 189 218) the Hoare annotation is: true [2023-11-21 19:35:54,972 INFO L902 garLoopResultBuilder]: At program point L199-2(lines 199 213) the Hoare annotation is: true [2023-11-21 19:35:54,973 INFO L902 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: true [2023-11-21 19:35:54,973 INFO L899 garLoopResultBuilder]: For program point L195-1(line 195) no Hoare annotation was computed. [2023-11-21 19:35:54,973 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 131 139) the Hoare annotation is: true [2023-11-21 19:35:54,973 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 131 139) no Hoare annotation was computed. [2023-11-21 19:35:54,973 INFO L895 garLoopResultBuilder]: At program point L539(lines 496 541) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse5 (<= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse2) (and .cse4 .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (and .cse5 .cse1 .cse2 .cse3))) [2023-11-21 19:35:54,974 INFO L899 garLoopResultBuilder]: For program point L506(lines 506 512) no Hoare annotation was computed. [2023-11-21 19:35:54,974 INFO L899 garLoopResultBuilder]: For program point L506-1(lines 506 512) no Hoare annotation was computed. [2023-11-21 19:35:54,974 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 282) no Hoare annotation was computed. [2023-11-21 19:35:54,974 INFO L899 garLoopResultBuilder]: For program point L275-2(lines 275 282) no Hoare annotation was computed. [2023-11-21 19:35:55,000 INFO L895 garLoopResultBuilder]: At program point L532-2(lines 526 537) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and (<= ~waterLevel~0 1) .cse0 .cse1 .cse2))) [2023-11-21 19:35:55,000 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 522) no Hoare annotation was computed. [2023-11-21 19:35:55,000 INFO L899 garLoopResultBuilder]: For program point L516-1(lines 516 522) no Hoare annotation was computed. [2023-11-21 19:35:55,000 INFO L899 garLoopResultBuilder]: For program point L545(lines 486 549) no Hoare annotation was computed. [2023-11-21 19:35:55,001 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 19:35:55,001 INFO L895 garLoopResultBuilder]: At program point L508(line 508) the Hoare annotation is: (let ((.cse1 (= 2 ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse5 (<= ~waterLevel~0 1)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse2 .cse3) (and .cse5 .cse2 .cse3 .cse4))) [2023-11-21 19:35:55,001 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 19:35:55,001 INFO L895 garLoopResultBuilder]: At program point L542(lines 495 543) the Hoare annotation is: false [2023-11-21 19:35:55,002 INFO L899 garLoopResultBuilder]: For program point L497(lines 496 541) no Hoare annotation was computed. [2023-11-21 19:35:55,002 INFO L895 garLoopResultBuilder]: At program point L518(line 518) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= ~waterLevel~0 2)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and (<= ~waterLevel~0 1) .cse0 .cse1 .cse2))) [2023-11-21 19:35:55,002 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 107 118) no Hoare annotation was computed. [2023-11-21 19:35:55,002 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 107 118) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (not (= ~pumpRunning~0 1)) .cse1 .cse2) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2))) [2023-11-21 19:35:55,002 INFO L895 garLoopResultBuilder]: At program point L345(line 345) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (< 1 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) .cse0))) [2023-11-21 19:35:55,003 INFO L899 garLoopResultBuilder]: For program point L345-1(lines 326 350) no Hoare annotation was computed. [2023-11-21 19:35:55,003 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 326 350) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (< 1 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0))) [2023-11-21 19:35:55,003 INFO L895 garLoopResultBuilder]: At program point L340(line 340) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (< 1 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1))) (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1))))) [2023-11-21 19:35:55,003 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 342) no Hoare annotation was computed. [2023-11-21 19:35:55,003 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 326 350) no Hoare annotation was computed. [2023-11-21 19:35:55,004 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 347) no Hoare annotation was computed. [2023-11-21 19:35:55,004 INFO L895 garLoopResultBuilder]: At program point L390(line 390) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (< 1 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1))) (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (or (= |processEnvironment__wrappee__methaneQuery_~tmp~2#1| 1) (< ~waterLevel~0 2)))))) [2023-11-21 19:35:55,004 INFO L899 garLoopResultBuilder]: For program point L390-1(line 390) no Hoare annotation was computed. [2023-11-21 19:35:55,004 INFO L902 garLoopResultBuilder]: At program point L415(line 415) the Hoare annotation is: true [2023-11-21 19:35:55,004 INFO L899 garLoopResultBuilder]: For program point L415-1(line 415) no Hoare annotation was computed. [2023-11-21 19:35:55,004 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 410 420) no Hoare annotation was computed. [2023-11-21 19:35:55,005 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 410 420) the Hoare annotation is: true [2023-11-21 19:35:55,007 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:35:55,009 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:35:55,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:35:55 BoogieIcfgContainer [2023-11-21 19:35:55,023 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:35:55,023 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:35:55,023 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:35:55,024 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:35:55,024 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:35:15" (3/4) ... [2023-11-21 19:35:55,026 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 19:35:55,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-21 19:35:55,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-21 19:35:55,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-21 19:35:55,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-21 19:35:55,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-21 19:35:55,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-21 19:35:55,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:35:55,032 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2023-11-21 19:35:55,045 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-11-21 19:35:55,046 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-21 19:35:55,048 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-21 19:35:55,048 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 19:35:55,049 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 19:35:55,076 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || (2 < \old(waterLevel))) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1))) && (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || !((1 == systemActive))) || (2 < \old(waterLevel)))) [2023-11-21 19:35:55,114 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || (2 < \old(waterLevel))) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1))) && (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || !((1 == systemActive))) || (2 < \old(waterLevel)))) [2023-11-21 19:35:55,166 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:35:55,167 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 19:35:55,167 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:35:55,167 INFO L158 Benchmark]: Toolchain (without parser) took 41270.52ms. Allocated memory was 132.1MB in the beginning and 583.0MB in the end (delta: 450.9MB). Free memory was 93.3MB in the beginning and 535.9MB in the end (delta: -442.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,168 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:35:55,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.75ms. Allocated memory is still 132.1MB. Free memory was 92.7MB in the beginning and 73.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.60ms. Allocated memory is still 132.1MB. Free memory was 73.3MB in the beginning and 71.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,169 INFO L158 Benchmark]: Boogie Preprocessor took 51.16ms. Allocated memory is still 132.1MB. Free memory was 71.2MB in the beginning and 69.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,169 INFO L158 Benchmark]: RCFGBuilder took 728.51ms. Allocated memory is still 132.1MB. Free memory was 69.7MB in the beginning and 81.0MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,170 INFO L158 Benchmark]: TraceAbstraction took 39648.69ms. Allocated memory was 132.1MB in the beginning and 583.0MB in the end (delta: 450.9MB). Free memory was 80.3MB in the beginning and 544.3MB in the end (delta: -464.0MB). Peak memory consumption was 332.9MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,170 INFO L158 Benchmark]: Witness Printer took 143.65ms. Allocated memory is still 583.0MB. Free memory was 544.3MB in the beginning and 535.9MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 19:35:55,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.75ms. Allocated memory is still 132.1MB. Free memory was 92.7MB in the beginning and 73.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.60ms. Allocated memory is still 132.1MB. Free memory was 73.3MB in the beginning and 71.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.16ms. Allocated memory is still 132.1MB. Free memory was 71.2MB in the beginning and 69.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 728.51ms. Allocated memory is still 132.1MB. Free memory was 69.7MB in the beginning and 81.0MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 39648.69ms. Allocated memory was 132.1MB in the beginning and 583.0MB in the end (delta: 450.9MB). Free memory was 80.3MB in the beginning and 544.3MB in the end (delta: -464.0MB). Peak memory consumption was 332.9MB. Max. memory is 16.1GB. * Witness Printer took 143.65ms. Allocated memory is still 583.0MB. Free memory was 544.3MB in the beginning and 535.9MB in the end (delta: 8.4MB). 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,"Specification3_spec.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [87] - GenericResultAtLocation [Line: 186]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [186] - GenericResultAtLocation [Line: 288]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [288] - GenericResultAtLocation [Line: 485]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [485] - GenericResultAtLocation [Line: 550]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [550] - GenericResultAtLocation [Line: 585]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [585] - GenericResultAtLocation [Line: 594]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [594] * 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: 590]: 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: 39.6s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1293 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1276 mSDsluCounter, 2015 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1519 mSDsCounter, 676 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2458 IncrementalHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 676 mSolverCounterUnsat, 496 mSDtfsCounter, 2458 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 190 SyntacticMatches, 10 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5788 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=604occurred in iteration=7, InterpolantAutomatonStates: 125, 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, 51 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 1165 PreInvPairs, 1443 NumberOfFragments, 699 HoareAnnotationTreeSize, 1165 FomulaSimplifications, 8587 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 24 FomulaSimplificationsInter, 10432 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 323 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 1056 SizeOfPredicates, 7 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 72/95 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: 496]: Loop Invariant Derived loop invariant: (((((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1)) || ((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0))) || (((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && !((methaneLevelCritical == 0))) && (splverifierCounter == 0))) || ((((waterLevel <= 1) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 495]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 294]: Loop Invariant Derived loop invariant: ((((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || (2 < \old(waterLevel))) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1))) && (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || !((1 == systemActive))) || (2 < \old(waterLevel)))) RESULT: Ultimate proved your program to be correct! [2023-11-21 19:35:55,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e52f562-2129-4397-88ee-a76cbb79dfc9/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE