./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80b4c453e300455caffbcb636daccd3af095acb6ed433fb3111a61f5db77a0b9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:34:12,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:34:12,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:34:12,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:34:12,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:34:12,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:34:12,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:34:12,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:34:12,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:34:12,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:34:12,448 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:34:12,449 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:34:12,449 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:34:12,450 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:34:12,451 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:34:12,451 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:34:12,452 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:34:12,452 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:34:12,453 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:34:12,454 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:34:12,454 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:34:12,455 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:34:12,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:34:12,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:34:12,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:34:12,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:34:12,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:34:12,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:34:12,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:34:12,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:34:12,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:34:12,460 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:34:12,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:34:12,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:34:12,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:34:12,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:34:12,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:34:12,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:34:12,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:34:12,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:34:12,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:34:12,463 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:34:12,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:34:12,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:34:12,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:34:12,464 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:34:12,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:34:12,464 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_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80b4c453e300455caffbcb636daccd3af095acb6ed433fb3111a61f5db77a0b9 [2023-12-02 08:34:12,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:34:12,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:34:12,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:34:12,744 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:34:12,744 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:34:12,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2023-12-02 08:34:15,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:34:16,007 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:34:16,007 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2023-12-02 08:34:16,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/data/47b1f6b73/926a4efe2db14ac4aa11f4d1d4faedef/FLAGbccf27f55 [2023-12-02 08:34:16,034 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/data/47b1f6b73/926a4efe2db14ac4aa11f4d1d4faedef [2023-12-02 08:34:16,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:34:16,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:34:16,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:34:16,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:34:16,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:34:16,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72808a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16, skipping insertion in model container [2023-12-02 08:34:16,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:34:16,245 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_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c[1605,1618] [2023-12-02 08:34:16,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:34:16,389 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:34:16,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-12-02 08:34:16,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] [2023-12-02 08:34:16,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [300] [2023-12-02 08:34:16,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [370] [2023-12-02 08:34:16,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [409] [2023-12-02 08:34:16,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [509] [2023-12-02 08:34:16,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [544] [2023-12-02 08:34:16,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [910] [2023-12-02 08:34:16,408 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_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c[1605,1618] [2023-12-02 08:34:16,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:34:16,503 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:34:16,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16 WrapperNode [2023-12-02 08:34:16,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:34:16,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:34:16,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:34:16,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:34:16,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,561 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 226 [2023-12-02 08:34:16,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:34:16,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:34:16,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:34:16,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:34:16,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:34:16,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:34:16,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:34:16,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:34:16,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (1/1) ... [2023-12-02 08:34:16,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:34:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:34:16,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:34:16,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:34:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:34:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 08:34:16,672 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 08:34:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 08:34:16,672 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 08:34:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 08:34:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 08:34:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 08:34:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 08:34:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 08:34:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 08:34:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 08:34:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 08:34:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 08:34:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 08:34:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:34:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 08:34:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 08:34:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:34:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:34:16,758 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:34:16,760 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:34:16,990 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:34:17,091 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:34:17,092 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 08:34:17,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:34:17 BoogieIcfgContainer [2023-12-02 08:34:17,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:34:17,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:34:17,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:34:17,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:34:17,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:34:16" (1/3) ... [2023-12-02 08:34:17,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1205804b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:34:17, skipping insertion in model container [2023-12-02 08:34:17,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:34:16" (2/3) ... [2023-12-02 08:34:17,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1205804b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:34:17, skipping insertion in model container [2023-12-02 08:34:17,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:34:17" (3/3) ... [2023-12-02 08:34:17,103 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2023-12-02 08:34:17,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:34:17,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:34:17,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:34:17,179 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;@7dfffb21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:34:17,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:34:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:34:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 08:34:17,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:17,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:17,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:17,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash -108520282, now seen corresponding path program 1 times [2023-12-02 08:34:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606106499] [2023-12-02 08:34:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:34:17,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606106499] [2023-12-02 08:34:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606106499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:34:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361521368] [2023-12-02 08:34:17,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:17,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:34:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:34:17,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:34:17,471 INFO L87 Difference]: Start difference. First operand has 66 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 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) [2023-12-02 08:34:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:17,546 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2023-12-02 08:34:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:34:17,549 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 [2023-12-02 08:34:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:17,560 INFO L225 Difference]: With dead ends: 130 [2023-12-02 08:34:17,561 INFO L226 Difference]: Without dead ends: 61 [2023-12-02 08:34:17,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:34:17,569 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:17,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:34:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-02 08:34:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-02 08:34:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 08:34:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2023-12-02 08:34:17,626 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 17 [2023-12-02 08:34:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:17,627 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2023-12-02 08:34:17,627 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) [2023-12-02 08:34:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2023-12-02 08:34:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 08:34:17,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:17,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:17,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:34:17,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:17,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash -41542237, now seen corresponding path program 1 times [2023-12-02 08:34:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206266225] [2023-12-02 08:34:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:34:17,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206266225] [2023-12-02 08:34:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206266225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:17,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:34:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115568772] [2023-12-02 08:34:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:34:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:17,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:34:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:34:17,750 INFO L87 Difference]: Start difference. First operand 61 states and 80 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) [2023-12-02 08:34:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:17,799 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2023-12-02 08:34:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:34:17,800 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 [2023-12-02 08:34:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:17,802 INFO L225 Difference]: With dead ends: 94 [2023-12-02 08:34:17,802 INFO L226 Difference]: Without dead ends: 53 [2023-12-02 08:34:17,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:34:17,805 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:17,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 93 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:34:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-02 08:34:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-02 08:34:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:34:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-12-02 08:34:17,818 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 18 [2023-12-02 08:34:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:17,818 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-12-02 08:34:17,819 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) [2023-12-02 08:34:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-12-02 08:34:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 08:34:17,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:17,821 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] [2023-12-02 08:34:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:34:17,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1953384932, now seen corresponding path program 1 times [2023-12-02 08:34:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224166978] [2023-12-02 08:34:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:17,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:34:17,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224166978] [2023-12-02 08:34:17,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224166978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:17,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:17,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:34:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293963108] [2023-12-02 08:34:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:34:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:34:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:34:17,923 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-12-02 08:34:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:18,002 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2023-12-02 08:34:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:34:18,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 21 [2023-12-02 08:34:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:18,005 INFO L225 Difference]: With dead ends: 155 [2023-12-02 08:34:18,005 INFO L226 Difference]: Without dead ends: 104 [2023-12-02 08:34:18,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:34:18,008 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 56 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:18,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 120 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:34:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-02 08:34:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2023-12-02 08:34:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.390625) internal successors, (89), 79 states have internal predecessors, (89), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (22), 15 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 08:34:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2023-12-02 08:34:18,047 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 21 [2023-12-02 08:34:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:18,048 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2023-12-02 08:34:18,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-12-02 08:34:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2023-12-02 08:34:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 08:34:18,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:18,050 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] [2023-12-02 08:34:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:34:18,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:18,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1141272397, now seen corresponding path program 1 times [2023-12-02 08:34:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:18,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333999313] [2023-12-02 08:34:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:34:18,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333999313] [2023-12-02 08:34:18,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333999313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:18,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:34:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736273894] [2023-12-02 08:34:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:18,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:34:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:34:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:34:18,171 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:34:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:18,278 INFO L93 Difference]: Finished difference Result 274 states and 367 transitions. [2023-12-02 08:34:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:34:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-12-02 08:34:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:18,282 INFO L225 Difference]: With dead ends: 274 [2023-12-02 08:34:18,283 INFO L226 Difference]: Without dead ends: 175 [2023-12-02 08:34:18,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:34:18,286 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 37 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:18,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 146 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:34:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-02 08:34:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2023-12-02 08:34:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 128 states have internal predecessors, (149), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (38), 27 states have call predecessors, (38), 30 states have call successors, (38) [2023-12-02 08:34:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 217 transitions. [2023-12-02 08:34:18,322 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 217 transitions. Word has length 24 [2023-12-02 08:34:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:18,323 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 217 transitions. [2023-12-02 08:34:18,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:34:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 217 transitions. [2023-12-02 08:34:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 08:34:18,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:18,326 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] [2023-12-02 08:34:18,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 08:34:18,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:18,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash -920233504, now seen corresponding path program 1 times [2023-12-02 08:34:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:18,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394597919] [2023-12-02 08:34:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:34:18,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394597919] [2023-12-02 08:34:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394597919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:18,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:34:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525329730] [2023-12-02 08:34:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:34:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:34:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:34:18,413 INFO L87 Difference]: Start difference. First operand 170 states and 217 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 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) [2023-12-02 08:34:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:18,491 INFO L93 Difference]: Finished difference Result 301 states and 394 transitions. [2023-12-02 08:34:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:34:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 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 33 [2023-12-02 08:34:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:18,497 INFO L225 Difference]: With dead ends: 301 [2023-12-02 08:34:18,498 INFO L226 Difference]: Without dead ends: 299 [2023-12-02 08:34:18,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:34:18,500 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 45 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:18,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 106 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:34:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-02 08:34:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2023-12-02 08:34:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 191 states have (on average 1.3141361256544504) internal successors, (251), 218 states have internal predecessors, (251), 55 states have call successors, (55), 47 states have call predecessors, (55), 46 states have return successors, (77), 46 states have call predecessors, (77), 55 states have call successors, (77) [2023-12-02 08:34:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 383 transitions. [2023-12-02 08:34:18,550 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 383 transitions. Word has length 33 [2023-12-02 08:34:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:18,551 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 383 transitions. [2023-12-02 08:34:18,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 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) [2023-12-02 08:34:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 383 transitions. [2023-12-02 08:34:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 08:34:18,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:18,558 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:18,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 08:34:18,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:18,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:18,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2091080877, now seen corresponding path program 1 times [2023-12-02 08:34:18,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:18,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997858117] [2023-12-02 08:34:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 08:34:18,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:18,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997858117] [2023-12-02 08:34:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997858117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:18,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:18,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:34:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571534518] [2023-12-02 08:34:18,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:34:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:34:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:34:18,631 INFO L87 Difference]: Start difference. First operand 293 states and 383 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 08:34:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:18,798 INFO L93 Difference]: Finished difference Result 333 states and 436 transitions. [2023-12-02 08:34:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:34:18,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 56 [2023-12-02 08:34:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:18,801 INFO L225 Difference]: With dead ends: 333 [2023-12-02 08:34:18,802 INFO L226 Difference]: Without dead ends: 141 [2023-12-02 08:34:18,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:34:18,804 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 124 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:34:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-02 08:34:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-12-02 08:34:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 92 states have (on average 1.25) internal successors, (115), 104 states have internal predecessors, (115), 25 states have call successors, (25), 23 states have call predecessors, (25), 23 states have return successors, (35), 22 states have call predecessors, (35), 25 states have call successors, (35) [2023-12-02 08:34:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 175 transitions. [2023-12-02 08:34:18,832 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 175 transitions. Word has length 56 [2023-12-02 08:34:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:18,833 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 175 transitions. [2023-12-02 08:34:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 08:34:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 175 transitions. [2023-12-02 08:34:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 08:34:18,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:18,837 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 08:34:18,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:18,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash 283065821, now seen corresponding path program 1 times [2023-12-02 08:34:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307523193] [2023-12-02 08:34:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 08:34:19,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307523193] [2023-12-02 08:34:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307523193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:34:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546259999] [2023-12-02 08:34:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:19,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:34:19,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:34:19,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:34:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:19,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 08:34:19,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:34:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:34:19,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:34:19,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546259999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:19,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 08:34:19,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2023-12-02 08:34:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581376475] [2023-12-02 08:34:19,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 08:34:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 08:34:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 08:34:19,995 INFO L87 Difference]: Start difference. First operand 141 states and 175 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-02 08:34:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:20,478 INFO L93 Difference]: Finished difference Result 380 states and 482 transitions. [2023-12-02 08:34:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 08:34:20,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2023-12-02 08:34:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:20,481 INFO L225 Difference]: With dead ends: 380 [2023-12-02 08:34:20,481 INFO L226 Difference]: Without dead ends: 241 [2023-12-02 08:34:20,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-02 08:34:20,483 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 149 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:20,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 176 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:34:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-02 08:34:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 192. [2023-12-02 08:34:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 141 states have internal predecessors, (162), 29 states have call successors, (29), 29 states have call predecessors, (29), 32 states have return successors, (47), 29 states have call predecessors, (47), 29 states have call successors, (47) [2023-12-02 08:34:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 238 transitions. [2023-12-02 08:34:20,506 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 238 transitions. Word has length 64 [2023-12-02 08:34:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:20,507 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 238 transitions. [2023-12-02 08:34:20,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-02 08:34:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 238 transitions. [2023-12-02 08:34:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 08:34:20,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:20,509 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:20,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:34:20,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:20,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:20,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash -300146610, now seen corresponding path program 1 times [2023-12-02 08:34:20,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:20,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21933264] [2023-12-02 08:34:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:34:21,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:21,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21933264] [2023-12-02 08:34:21,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21933264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:34:21,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326043631] [2023-12-02 08:34:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:21,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:21,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:34:21,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:34:21,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 08:34:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:21,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 08:34:21,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:34:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:34:21,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:34:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:34:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326043631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:34:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536151551] [2023-12-02 08:34:22,529 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 08:34:22,529 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:34:22,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:34:22,539 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:34:22,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:34:26,002 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 122 for LOIs [2023-12-02 08:34:26,040 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 146 for LOIs [2023-12-02 08:34:27,736 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 144 for LOIs [2023-12-02 08:34:28,704 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-12-02 08:34:28,705 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:34:40,903 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4378#(and (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| 0)) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1|) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 0)) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| 2147483647) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 2147483647) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| 2147483648)) (not (= ~methAndRunningLastTime~0 0)) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 2147483648)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| ~methaneLevelCritical~0))' at error location [2023-12-02 08:34:40,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 08:34:40,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:34:40,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 31 [2023-12-02 08:34:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118507323] [2023-12-02 08:34:40,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 08:34:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 08:34:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:40,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 08:34:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=2764, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 08:34:40,909 INFO L87 Difference]: Start difference. First operand 192 states and 238 transitions. Second operand has 31 states, 28 states have (on average 3.75) internal successors, (105), 25 states have internal predecessors, (105), 13 states have call successors, (22), 11 states have call predecessors, (22), 9 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2023-12-02 08:34:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:42,761 INFO L93 Difference]: Finished difference Result 795 states and 1021 transitions. [2023-12-02 08:34:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 08:34:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.75) internal successors, (105), 25 states have internal predecessors, (105), 13 states have call successors, (22), 11 states have call predecessors, (22), 9 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) Word has length 67 [2023-12-02 08:34:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:42,766 INFO L225 Difference]: With dead ends: 795 [2023-12-02 08:34:42,766 INFO L226 Difference]: Without dead ends: 605 [2023-12-02 08:34:42,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 160 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1341, Invalid=7031, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 08:34:42,771 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 722 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:42,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 658 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 08:34:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-02 08:34:42,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 541. [2023-12-02 08:34:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 372 states have (on average 1.228494623655914) internal successors, (457), 403 states have internal predecessors, (457), 85 states have call successors, (85), 75 states have call predecessors, (85), 83 states have return successors, (135), 84 states have call predecessors, (135), 85 states have call successors, (135) [2023-12-02 08:34:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 677 transitions. [2023-12-02 08:34:42,841 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 677 transitions. Word has length 67 [2023-12-02 08:34:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:42,841 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 677 transitions. [2023-12-02 08:34:42,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.75) internal successors, (105), 25 states have internal predecessors, (105), 13 states have call successors, (22), 11 states have call predecessors, (22), 9 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2023-12-02 08:34:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 677 transitions. [2023-12-02 08:34:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 08:34:42,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:42,844 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:42,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 08:34:43,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:43,045 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:43,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash -68450577, now seen corresponding path program 1 times [2023-12-02 08:34:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313529138] [2023-12-02 08:34:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 08:34:43,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:43,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313529138] [2023-12-02 08:34:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313529138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:43,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:34:43,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:34:43,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022426858] [2023-12-02 08:34:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:34:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:34:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:34:43,163 INFO L87 Difference]: Start difference. First operand 541 states and 677 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:34:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:43,313 INFO L93 Difference]: Finished difference Result 942 states and 1209 transitions. [2023-12-02 08:34:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:34:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2023-12-02 08:34:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:43,318 INFO L225 Difference]: With dead ends: 942 [2023-12-02 08:34:43,318 INFO L226 Difference]: Without dead ends: 509 [2023-12-02 08:34:43,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:34:43,322 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 37 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:43,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 164 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:34:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-02 08:34:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 488. [2023-12-02 08:34:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 339 states have (on average 1.2153392330383481) internal successors, (412), 367 states have internal predecessors, (412), 75 states have call successors, (75), 69 states have call predecessors, (75), 73 states have return successors, (106), 74 states have call predecessors, (106), 75 states have call successors, (106) [2023-12-02 08:34:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 593 transitions. [2023-12-02 08:34:43,385 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 593 transitions. Word has length 68 [2023-12-02 08:34:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:43,386 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 593 transitions. [2023-12-02 08:34:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:34:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 593 transitions. [2023-12-02 08:34:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 08:34:43,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:43,390 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-02 08:34:43,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 08:34:43,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:43,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1408309223, now seen corresponding path program 1 times [2023-12-02 08:34:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:43,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732514195] [2023-12-02 08:34:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:43,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 75 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 08:34:43,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732514195] [2023-12-02 08:34:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732514195] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:34:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294099849] [2023-12-02 08:34:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:43,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:34:43,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:34:43,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 08:34:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:43,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 08:34:43,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:34:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 08:34:44,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:34:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 32 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 08:34:45,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294099849] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:34:45,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [614261406] [2023-12-02 08:34:45,531 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-12-02 08:34:45,532 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:34:45,532 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:34:45,533 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:34:45,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:34:52,072 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-12-02 08:34:52,082 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 21 for LOIs [2023-12-02 08:34:52,308 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 28 for LOIs [2023-12-02 08:34:52,404 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-12-02 08:34:52,405 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 20 for LOIs [2023-12-02 08:34:52,408 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2023-12-02 08:34:52,411 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:34:55,213 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8903#(and (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| 0)) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1|) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 0)) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 2147483647) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (not (= ~methAndRunningLastTime~0 0)) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~3#1| 2147483648)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~6#1| ~methaneLevelCritical~0))' at error location [2023-12-02 08:34:55,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 08:34:55,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:34:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18, 17] total 37 [2023-12-02 08:34:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173502997] [2023-12-02 08:34:55,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 08:34:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 08:34:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 08:34:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=4323, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 08:34:55,220 INFO L87 Difference]: Start difference. First operand 488 states and 593 transitions. Second operand has 37 states, 35 states have (on average 5.2) internal successors, (182), 34 states have internal predecessors, (182), 20 states have call successors, (37), 10 states have call predecessors, (37), 15 states have return successors, (38), 18 states have call predecessors, (38), 20 states have call successors, (38) [2023-12-02 08:34:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:57,689 INFO L93 Difference]: Finished difference Result 892 states and 1097 transitions. [2023-12-02 08:34:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-02 08:34:57,690 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 5.2) internal successors, (182), 34 states have internal predecessors, (182), 20 states have call successors, (37), 10 states have call predecessors, (37), 15 states have return successors, (38), 18 states have call predecessors, (38), 20 states have call successors, (38) Word has length 121 [2023-12-02 08:34:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:57,691 INFO L225 Difference]: With dead ends: 892 [2023-12-02 08:34:57,691 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 08:34:57,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 314 SyntacticMatches, 4 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1825, Invalid=12937, Unknown=0, NotChecked=0, Total=14762 [2023-12-02 08:34:57,699 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 652 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:57,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 744 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 08:34:57,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 08:34:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 08:34:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:34:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 08:34:57,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2023-12-02 08:34:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:57,702 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 08:34:57,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 5.2) internal successors, (182), 34 states have internal predecessors, (182), 20 states have call successors, (37), 10 states have call predecessors, (37), 15 states have return successors, (38), 18 states have call predecessors, (38), 20 states have call successors, (38) [2023-12-02 08:34:57,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 08:34:57,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 08:34:57,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 08:34:57,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 08:34:57,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 08:34:57,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 08:35:00,364 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 183 190) no Hoare annotation was computed. [2023-12-02 08:35:00,364 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 183 190) the Hoare annotation is: (or (< 2 ~waterLevel~0) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) (not (= 1 ~systemActive~0)) (= |old(~pumpRunning~0)| 0)) [2023-12-02 08:35:00,364 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 98 104) no Hoare annotation was computed. [2023-12-02 08:35:00,364 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 98 104) the Hoare annotation is: true [2023-12-02 08:35:00,364 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 938 949) the Hoare annotation is: (let ((.cse7 (= |old(~methaneLevelCritical~0)| 0)) (.cse3 (= ~methaneLevelCritical~0 0)) (.cse10 (= ~pumpRunning~0 0))) (let ((.cse0 (not (= ~waterLevel~0 1))) (.cse2 (not .cse10)) (.cse8 (not .cse3)) (.cse1 (not .cse7)) (.cse4 (not (= 1 ~systemActive~0))) (.cse6 (not (= 2 ~waterLevel~0))) (.cse9 (< ~waterLevel~0 2)) (.cse5 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse4 .cse6 .cse7 .cse8 .cse9 .cse5) (or .cse0 .cse2 .cse4 .cse7 .cse8 .cse5) (or .cse10 .cse4 .cse6 .cse7 .cse8) (or .cse1 .cse3 .cse4 .cse6 .cse9 .cse5)))) [2023-12-02 08:35:00,364 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 938 949) no Hoare annotation was computed. [2023-12-02 08:35:00,364 INFO L902 garLoopResultBuilder]: At program point L417(line 417) the Hoare annotation is: true [2023-12-02 08:35:00,364 INFO L899 garLoopResultBuilder]: For program point L417-1(line 417) no Hoare annotation was computed. [2023-12-02 08:35:00,365 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 411 440) no Hoare annotation was computed. [2023-12-02 08:35:00,365 INFO L899 garLoopResultBuilder]: For program point L436(lines 411 440) no Hoare annotation was computed. [2023-12-02 08:35:00,365 INFO L899 garLoopResultBuilder]: For program point L432(line 432) no Hoare annotation was computed. [2023-12-02 08:35:00,365 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 411 440) the Hoare annotation is: true [2023-12-02 08:35:00,365 INFO L899 garLoopResultBuilder]: For program point L425(lines 425 429) no Hoare annotation was computed. [2023-12-02 08:35:00,365 INFO L902 garLoopResultBuilder]: At program point L425-1(lines 425 429) the Hoare annotation is: true [2023-12-02 08:35:00,365 INFO L902 garLoopResultBuilder]: At program point L421-2(lines 421 435) the Hoare annotation is: true [2023-12-02 08:35:00,365 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 950 958) the Hoare annotation is: true [2023-12-02 08:35:00,365 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 950 958) no Hoare annotation was computed. [2023-12-02 08:35:00,366 INFO L899 garLoopResultBuilder]: For program point L386-1(line 386) no Hoare annotation was computed. [2023-12-02 08:35:00,366 INFO L895 garLoopResultBuilder]: At program point L151(line 151) the Hoare annotation is: (let ((.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (not .cse6))) (and (or .cse0 .cse1 (and .cse2 .cse3 (= 2 ~waterLevel~0)) .cse4) (or .cse5 .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 .cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse1 .cse6 .cse4) (or .cse5 (not (= 0 ~systemActive~0)))))) [2023-12-02 08:35:00,366 INFO L899 garLoopResultBuilder]: For program point L151-1(lines 132 156) no Hoare annotation was computed. [2023-12-02 08:35:00,366 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 85 91) no Hoare annotation was computed. [2023-12-02 08:35:00,366 INFO L899 garLoopResultBuilder]: For program point L78-1(lines 77 96) no Hoare annotation was computed. [2023-12-02 08:35:00,366 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 148) no Hoare annotation was computed. [2023-12-02 08:35:00,366 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 153) no Hoare annotation was computed. [2023-12-02 08:35:00,367 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 402) no Hoare annotation was computed. [2023-12-02 08:35:00,367 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 405) no Hoare annotation was computed. [2023-12-02 08:35:00,367 INFO L899 garLoopResultBuilder]: For program point L388-1(lines 380 408) no Hoare annotation was computed. [2023-12-02 08:35:00,367 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-12-02 08:35:00,367 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 74 97) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse0 (not .cse8)) (.cse1 (= ~pumpRunning~0 0)) (.cse6 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse7 (= 2 ~waterLevel~0)) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (not (= 1 ~systemActive~0))) (.cse9 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse4 .cse2) (or .cse0 (and .cse1 .cse4 (= ~waterLevel~0 1)) .cse3 (not (= |old(~waterLevel~0)| 1)) .cse5) (or .cse5 (and .cse6 .cse7) .cse8 .cse9) (or (and .cse6 .cse4 .cse7) .cse3 .cse5 .cse9)))) [2023-12-02 08:35:00,367 INFO L899 garLoopResultBuilder]: For program point L393(lines 393 399) no Hoare annotation was computed. [2023-12-02 08:35:00,367 INFO L895 garLoopResultBuilder]: At program point L146(line 146) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (not .cse3))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse3 .cse2) (or .cse4 .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse4 (not (= 0 ~systemActive~0)))))) [2023-12-02 08:35:00,368 INFO L895 garLoopResultBuilder]: At program point L142(line 142) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse3 (not .cse1))) (and (or (and (= |timeShift_processEnvironment_~tmp~1#1| 1) (not (= ~pumpRunning~0 0)) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse0 .cse1 .cse2) (or .cse3 .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse3 .cse4 .cse0 .cse2) (or .cse3 (not (= 0 ~systemActive~0)))))) [2023-12-02 08:35:00,368 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 74 97) no Hoare annotation was computed. [2023-12-02 08:35:00,368 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-12-02 08:35:00,368 INFO L895 garLoopResultBuilder]: At program point L386(line 386) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse7 (= ~methAndRunningLastTime~0 0)) (.cse5 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not .cse4)) (.cse6 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5 (and .cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)))) (or .cse0 .cse6 .cse7 .cse2) (or .cse0 .cse6 (and .cse7 (= 2 ~waterLevel~0)) .cse3 .cse5) (or .cse0 .cse6 (and .cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (not (= |old(~waterLevel~0)| 1)) .cse3)))) [2023-12-02 08:35:00,368 INFO L895 garLoopResultBuilder]: At program point L362(lines 313 363) the Hoare annotation is: false [2023-12-02 08:35:00,368 INFO L899 garLoopResultBuilder]: For program point L350(lines 350 356) no Hoare annotation was computed. [2023-12-02 08:35:00,369 INFO L895 garLoopResultBuilder]: At program point L350-2(lines 344 357) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse1 .cse4 .cse2 .cse3) (and .cse0 .cse3 (= 0 ~systemActive~0)) (and (not .cse0) .cse4 .cse2 .cse3))) [2023-12-02 08:35:00,369 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 340) no Hoare annotation was computed. [2023-12-02 08:35:00,369 INFO L899 garLoopResultBuilder]: For program point L334-1(lines 334 340) no Hoare annotation was computed. [2023-12-02 08:35:00,369 INFO L895 garLoopResultBuilder]: At program point L359(lines 314 361) the Hoare annotation is: (let ((.cse4 (= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and (not .cse0) .cse4 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse0 .cse1 .cse3 (= 0 ~systemActive~0)))) [2023-12-02 08:35:00,369 INFO L895 garLoopResultBuilder]: At program point L326(line 326) the Hoare annotation is: (let ((.cse4 (= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and (not .cse0) .cse4 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse0 .cse1 .cse3 (= 0 ~systemActive~0)))) [2023-12-02 08:35:00,369 INFO L899 garLoopResultBuilder]: For program point L289(lines 289 295) no Hoare annotation was computed. [2023-12-02 08:35:00,369 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 08:35:00,369 INFO L899 garLoopResultBuilder]: For program point L289-1(lines 289 295) no Hoare annotation was computed. [2023-12-02 08:35:00,369 INFO L899 garLoopResultBuilder]: For program point L496(lines 496 503) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point L496-2(lines 496 503) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point L315(lines 314 361) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point L344(lines 344 357) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L895 garLoopResultBuilder]: At program point L336(line 336) the Hoare annotation is: (let ((.cse4 (= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~waterLevel~0 1)) (and (not .cse0) .cse4 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse0 .cse1 .cse3 (= 0 ~systemActive~0)))) [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point L365(lines 304 369) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 330) no Hoare annotation was computed. [2023-12-02 08:35:00,370 INFO L899 garLoopResultBuilder]: For program point L324-1(lines 324 330) no Hoare annotation was computed. [2023-12-02 08:35:00,371 INFO L895 garLoopResultBuilder]: At program point L291(line 291) the Hoare annotation is: (and (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2023-12-02 08:35:00,371 INFO L895 garLoopResultBuilder]: At program point L120(line 120) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (< 1 ~waterLevel~0) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0)) .cse2) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2))) [2023-12-02 08:35:00,371 INFO L899 garLoopResultBuilder]: For program point L114(lines 114 122) no Hoare annotation was computed. [2023-12-02 08:35:00,371 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 127) no Hoare annotation was computed. [2023-12-02 08:35:00,371 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 106 130) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 (< 1 ~waterLevel~0) .cse3) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0)) .cse3))) [2023-12-02 08:35:00,371 INFO L895 garLoopResultBuilder]: At program point L125(line 125) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2) (or .cse0 .cse1 (< 1 ~waterLevel~0) .cse2))) [2023-12-02 08:35:00,371 INFO L899 garLoopResultBuilder]: For program point L125-1(lines 106 130) no Hoare annotation was computed. [2023-12-02 08:35:00,371 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 106 130) no Hoare annotation was computed. [2023-12-02 08:35:00,372 INFO L895 garLoopResultBuilder]: At program point L196(line 196) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 1)) .cse2) (or .cse0 .cse1 (< 1 ~waterLevel~0) .cse2))) [2023-12-02 08:35:00,372 INFO L899 garLoopResultBuilder]: For program point L196-1(line 196) no Hoare annotation was computed. [2023-12-02 08:35:00,372 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 926 937) no Hoare annotation was computed. [2023-12-02 08:35:00,372 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 926 937) the Hoare annotation is: (let ((.cse2 (not (= ~methAndRunningLastTime~0 0))) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2)))) (and (or (not .cse0) (not (= |old(~waterLevel~0)| 1)) .cse1 (= ~waterLevel~0 1) .cse2) (or .cse3 .cse1 .cse4 .cse2) (or .cse0 .cse3 (= ~methaneLevelCritical~0 0) .cse1 .cse4))) [2023-12-02 08:35:00,375 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:35:00,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:35:00,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:35:00 BoogieIcfgContainer [2023-12-02 08:35:00,393 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:35:00,393 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:35:00,393 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:35:00,394 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:35:00,394 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:34:17" (3/4) ... [2023-12-02 08:35:00,396 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 08:35:00,400 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 08:35:00,400 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 08:35:00,400 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 08:35:00,400 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 08:35:00,400 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 08:35:00,400 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 08:35:00,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 08:35:00,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 08:35:00,410 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-12-02 08:35:00,411 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 08:35:00,412 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 08:35:00,413 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 08:35:00,413 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 08:35:00,447 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((0 == systemActive))) && (((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (methAndRunningLastTime == 0)) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel == 1))) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || !((1 == systemActive)))) && (((!((1 == systemActive)) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || (\old(pumpRunning) == 0)) || !((\old(waterLevel) == 2)))) && ((((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && (2 == waterLevel)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || !((\old(waterLevel) == 2)))) [2023-12-02 08:35:00,493 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((0 == systemActive))) && (((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (methAndRunningLastTime == 0)) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel == 1))) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || !((1 == systemActive)))) && (((!((1 == systemActive)) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || (\old(pumpRunning) == 0)) || !((\old(waterLevel) == 2)))) && ((((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && (2 == waterLevel)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || !((\old(waterLevel) == 2)))) [2023-12-02 08:35:00,551 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 08:35:00,552 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 08:35:00,552 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:35:00,553 INFO L158 Benchmark]: Toolchain (without parser) took 44514.11ms. Allocated memory was 151.0MB in the beginning and 702.5MB in the end (delta: 551.6MB). Free memory was 113.8MB in the beginning and 532.7MB in the end (delta: -418.9MB). Peak memory consumption was 134.6MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,553 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 59.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:35:00,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.97ms. Allocated memory is still 151.0MB. Free memory was 113.8MB in the beginning and 94.0MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.76ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 91.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,554 INFO L158 Benchmark]: Boogie Preprocessor took 33.36ms. Allocated memory is still 151.0MB. Free memory was 91.5MB in the beginning and 89.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,555 INFO L158 Benchmark]: RCFGBuilder took 497.43ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 104.8MB in the end (delta: -15.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,555 INFO L158 Benchmark]: TraceAbstraction took 43296.50ms. Allocated memory was 151.0MB in the beginning and 702.5MB in the end (delta: 551.6MB). Free memory was 103.5MB in the beginning and 540.1MB in the end (delta: -436.5MB). Peak memory consumption was 413.2MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,556 INFO L158 Benchmark]: Witness Printer took 158.66ms. Allocated memory is still 702.5MB. Free memory was 540.1MB in the beginning and 532.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 08:35:00,558 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 59.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 463.97ms. Allocated memory is still 151.0MB. Free memory was 113.8MB in the beginning and 94.0MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.76ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 91.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.36ms. Allocated memory is still 151.0MB. Free memory was 91.5MB in the beginning and 89.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.43ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 104.8MB in the end (delta: -15.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 43296.50ms. Allocated memory was 151.0MB in the beginning and 702.5MB in the end (delta: 551.6MB). Free memory was 103.5MB in the beginning and 540.1MB in the end (delta: -436.5MB). Peak memory consumption was 413.2MB. Max. memory is 16.1GB. * Witness Printer took 158.66ms. Allocated memory is still 702.5MB. Free memory was 540.1MB in the beginning and 532.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] - GenericResultAtLocation [Line: 300]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [300] - GenericResultAtLocation [Line: 370]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [370] - GenericResultAtLocation [Line: 409]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [409] - GenericResultAtLocation [Line: 509]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [509] - GenericResultAtLocation [Line: 544]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [544] - GenericResultAtLocation [Line: 910]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [910] * 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: 54]: 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, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.2s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1815 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1799 mSDsluCounter, 2400 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1768 mSDsCounter, 882 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3022 IncrementalHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 882 mSolverCounterUnsat, 632 mSDtfsCounter, 3022 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 800 GetRequests, 547 SyntacticMatches, 12 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7660 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=541occurred in iteration=8, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 148 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 779 PreInvPairs, 847 NumberOfFragments, 987 HoareAnnotationTreeSize, 779 FomulaSimplifications, 6056 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 8198 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 914 ConstructedInterpolants, 0 QuantifiedInterpolants, 3285 SizeOfPredicates, 23 NumberOfNonLiveVariables, 973 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 512/655 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: 421]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 313]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 314]: Loop Invariant Derived loop invariant: ((((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || ((((!((pumpRunning == 0)) && (2 == waterLevel)) && (1 == systemActive)) && !((methaneLevelCritical == 0))) && (splverifierCounter == 0))) || ((((methAndRunningLastTime == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (splverifierCounter == 0)) && (0 == systemActive))) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: ((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((0 == systemActive))) && (((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (methAndRunningLastTime == 0)) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel == 1))) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || !((1 == systemActive)))) && (((!((1 == systemActive)) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || (\old(pumpRunning) == 0)) || !((\old(waterLevel) == 2)))) && ((((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && (2 == waterLevel)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || !((\old(waterLevel) == 2)))) RESULT: Ultimate proved your program to be correct! [2023-12-02 08:35:00,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c0713f-04c3-4167-ac6b-c83ee1a47c37/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE