./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.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_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/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_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/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_a320b9c7-f016-42a3-a286-02ad0a2cf50c/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 d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:54:16,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:54:16,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:54:16,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:54:16,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:54:16,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:54:16,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:54:16,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:54:16,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:54:16,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:54:16,314 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:54:16,315 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:54:16,316 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:54:16,316 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:54:16,317 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:54:16,317 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:54:16,318 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:54:16,319 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:54:16,319 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:54:16,320 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:54:16,321 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:54:16,321 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:54:16,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:54:16,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:54:16,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:54:16,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:54:16,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:54:16,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:54:16,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:54:16,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:54:16,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:54:16,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:54:16,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:54:16,327 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:54:16,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:54:16,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:54:16,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:54:16,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:54:16,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:54:16,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:54:16,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:54:16,329 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:54:16,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:54:16,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:54:16,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:54:16,330 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:54:16,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:54:16,331 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_a320b9c7-f016-42a3-a286-02ad0a2cf50c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a [2023-12-02 19:54:16,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:54:16,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:54:16,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:54:16,609 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:54:16,609 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:54:16,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2023-12-02 19:54:19,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:54:20,109 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:54:20,109 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2023-12-02 19:54:20,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/data/8d2f70344/6555fcf6f45c42219e9c7315a4ccbf61/FLAGa84590d35 [2023-12-02 19:54:20,143 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/data/8d2f70344/6555fcf6f45c42219e9c7315a4ccbf61 [2023-12-02 19:54:20,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:54:20,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:54:20,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:54:20,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:54:20,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:54:20,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498e1b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20, skipping insertion in model container [2023-12-02 19:54:20,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:54:20,543 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_a320b9c7-f016-42a3-a286-02ad0a2cf50c/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c[18661,18674] [2023-12-02 19:54:20,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:54:20,562 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:54:20,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [49] [2023-12-02 19:54:20,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [78] [2023-12-02 19:54:20,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [116] [2023-12-02 19:54:20,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [482] [2023-12-02 19:54:20,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [551] [2023-12-02 19:54:20,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [773] [2023-12-02 19:54:20,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [869] [2023-12-02 19:54:20,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [973] [2023-12-02 19:54:20,639 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_a320b9c7-f016-42a3-a286-02ad0a2cf50c/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c[18661,18674] [2023-12-02 19:54:20,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:54:20,663 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:54:20,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20 WrapperNode [2023-12-02 19:54:20,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:54:20,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:54:20,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:54:20,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:54:20,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,723 INFO L138 Inliner]: procedures = 56, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 215 [2023-12-02 19:54:20,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:54:20,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:54:20,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:54:20,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:54:20,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:54:20,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:54:20,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:54:20,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:54:20,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (1/1) ... [2023-12-02 19:54:20,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:54:20,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:54:20,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:54:20,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:54:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:54:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 19:54:20,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 19:54:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 19:54:20,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 19:54:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 19:54:20,839 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 19:54:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 19:54:20,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 19:54:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:54:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:54:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 19:54:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 19:54:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:54:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 19:54:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 19:54:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:54:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:54:20,932 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:54:20,934 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:54:21,192 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:54:21,314 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:54:21,314 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:54:21,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:54:21 BoogieIcfgContainer [2023-12-02 19:54:21,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:54:21,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:54:21,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:54:21,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:54:21,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:54:20" (1/3) ... [2023-12-02 19:54:21,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dfa058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:54:21, skipping insertion in model container [2023-12-02 19:54:21,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:54:20" (2/3) ... [2023-12-02 19:54:21,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dfa058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:54:21, skipping insertion in model container [2023-12-02 19:54:21,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:54:21" (3/3) ... [2023-12-02 19:54:21,328 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2023-12-02 19:54:21,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:54:21,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:54:21,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:54:21,422 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;@19437682, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:54:21,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:54:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 19:54:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 19:54:21,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:21,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:21,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:21,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash -272895338, now seen corresponding path program 1 times [2023-12-02 19:54:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:21,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294129573] [2023-12-02 19:54:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:21,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:21,668 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 19:54:21,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:21,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294129573] [2023-12-02 19:54:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294129573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:21,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:54:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380005724] [2023-12-02 19:54:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:21,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:54:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:54:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:54:21,714 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 19:54:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:21,790 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2023-12-02 19:54:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:54:21,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2023-12-02 19:54:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:21,804 INFO L225 Difference]: With dead ends: 112 [2023-12-02 19:54:21,804 INFO L226 Difference]: Without dead ends: 52 [2023-12-02 19:54:21,809 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 19:54:21,813 INFO L413 NwaCegarLoop]: 55 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, 55 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 19:54:21,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:54:21,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-02 19:54:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-02 19:54:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:54:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-12-02 19:54:21,864 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 16 [2023-12-02 19:54:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:21,865 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-12-02 19:54:21,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 19:54:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-12-02 19:54:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 19:54:21,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:21,868 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 19:54:21,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:54:21,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:21,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2100348772, now seen corresponding path program 1 times [2023-12-02 19:54:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:21,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315901] [2023-12-02 19:54:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:21,984 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 19:54:21,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315901] [2023-12-02 19:54:21,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:21,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:54:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446769548] [2023-12-02 19:54:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:21,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:54:21,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:54:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:54:21,989 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 19:54:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:22,037 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-12-02 19:54:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:54:22,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 19:54:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:22,040 INFO L225 Difference]: With dead ends: 81 [2023-12-02 19:54:22,040 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 19:54:22,041 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 19:54:22,043 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 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 19:54:22,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:54:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 19:54:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 19:54:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 19:54:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-12-02 19:54:22,056 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2023-12-02 19:54:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:22,057 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-12-02 19:54:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 19:54:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-12-02 19:54:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:54:22,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:22,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:22,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:54:22,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:22,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 345337604, now seen corresponding path program 1 times [2023-12-02 19:54:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:22,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471860701] [2023-12-02 19:54:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:22,171 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 19:54:22,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471860701] [2023-12-02 19:54:22,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471860701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:22,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:22,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:54:22,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875362195] [2023-12-02 19:54:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:22,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:54:22,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:54:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:54:22,174 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19:54:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:22,218 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2023-12-02 19:54:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:54:22,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19 [2023-12-02 19:54:22,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:22,220 INFO L225 Difference]: With dead ends: 86 [2023-12-02 19:54:22,221 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 19:54:22,222 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 19:54:22,223 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:22,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:54:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 19:54:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 19:54:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 35 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 19:54:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-12-02 19:54:22,236 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 19 [2023-12-02 19:54:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:22,237 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-12-02 19:54:22,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19:54:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-12-02 19:54:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:54:22,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:22,239 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] [2023-12-02 19:54:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:54:22,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:22,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash -802980982, now seen corresponding path program 1 times [2023-12-02 19:54:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:22,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461356527] [2023-12-02 19:54:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:22,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:22,345 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 19:54:22,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:22,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461356527] [2023-12-02 19:54:22,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461356527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:22,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:22,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:54:22,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226698210] [2023-12-02 19:54:22,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:22,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:54:22,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:54:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:54:22,349 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19:54:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:22,416 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2023-12-02 19:54:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:54:22,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 22 [2023-12-02 19:54:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:22,419 INFO L225 Difference]: With dead ends: 120 [2023-12-02 19:54:22,419 INFO L226 Difference]: Without dead ends: 78 [2023-12-02 19:54:22,420 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 19:54:22,422 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 36 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:22,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:54:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-02 19:54:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-12-02 19:54:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.24) internal successors, (62), 57 states have internal predecessors, (62), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2023-12-02 19:54:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2023-12-02 19:54:22,443 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 22 [2023-12-02 19:54:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:22,444 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2023-12-02 19:54:22,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19:54:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2023-12-02 19:54:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 19:54:22,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:22,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:54:22,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:22,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -991009571, now seen corresponding path program 1 times [2023-12-02 19:54:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179067968] [2023-12-02 19:54:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:22,624 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 19:54:22,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179067968] [2023-12-02 19:54:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179067968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:22,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:54:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710036691] [2023-12-02 19:54:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:22,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:54:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:22,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:54:22,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:54:22,628 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:54:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:22,862 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-12-02 19:54:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 19:54:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-12-02 19:54:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:22,868 INFO L225 Difference]: With dead ends: 102 [2023-12-02 19:54:22,868 INFO L226 Difference]: Without dead ends: 100 [2023-12-02 19:54:22,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:54:22,870 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 57 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:22,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 113 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:54:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-02 19:54:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2023-12-02 19:54:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 70 states have internal predecessors, (77), 15 states have call successors, (15), 12 states have call predecessors, (15), 15 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2023-12-02 19:54:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2023-12-02 19:54:22,892 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 30 [2023-12-02 19:54:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:22,892 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2023-12-02 19:54:22,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:54:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2023-12-02 19:54:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 19:54:22,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:22,894 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] [2023-12-02 19:54:22,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:54:22,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:22,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1938263853, now seen corresponding path program 1 times [2023-12-02 19:54:22,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:22,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269033049] [2023-12-02 19:54:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:22,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:23,149 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 19:54:23,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:23,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269033049] [2023-12-02 19:54:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269033049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:23,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:23,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:54:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034717233] [2023-12-02 19:54:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:23,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:54:23,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:54:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:54:23,152 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:54:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:23,396 INFO L93 Difference]: Finished difference Result 240 states and 290 transitions. [2023-12-02 19:54:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:54:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-12-02 19:54:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:23,400 INFO L225 Difference]: With dead ends: 240 [2023-12-02 19:54:23,400 INFO L226 Difference]: Without dead ends: 148 [2023-12-02 19:54:23,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:54:23,403 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 79 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:23,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 175 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:54:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-02 19:54:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2023-12-02 19:54:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 95 states have internal predecessors, (104), 20 states have call successors, (20), 19 states have call predecessors, (20), 22 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2023-12-02 19:54:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2023-12-02 19:54:23,435 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 31 [2023-12-02 19:54:23,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:23,436 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2023-12-02 19:54:23,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:54:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2023-12-02 19:54:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 19:54:23,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:23,439 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:54:23,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:23,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash 788946186, now seen corresponding path program 1 times [2023-12-02 19:54:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083879867] [2023-12-02 19:54:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:23,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:54:23,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083879867] [2023-12-02 19:54:23,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083879867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:23,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:23,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:54:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113186043] [2023-12-02 19:54:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:23,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:54:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:54:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:54:23,564 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:54:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:23,739 INFO L93 Difference]: Finished difference Result 384 states and 453 transitions. [2023-12-02 19:54:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:54:23,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-12-02 19:54:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:23,744 INFO L225 Difference]: With dead ends: 384 [2023-12-02 19:54:23,744 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 19:54:23,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:54:23,746 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:23,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 168 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:54:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 19:54:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 242. [2023-12-02 19:54:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 163 states have (on average 1.165644171779141) internal successors, (190), 175 states have internal predecessors, (190), 37 states have call successors, (37), 35 states have call predecessors, (37), 41 states have return successors, (51), 39 states have call predecessors, (51), 37 states have call successors, (51) [2023-12-02 19:54:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2023-12-02 19:54:23,786 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 34 [2023-12-02 19:54:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:23,786 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2023-12-02 19:54:23,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 19:54:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2023-12-02 19:54:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 19:54:23,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:23,789 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:54:23,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:23,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -302651709, now seen corresponding path program 1 times [2023-12-02 19:54:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107518559] [2023-12-02 19:54:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:24,102 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 19:54:24,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:24,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107518559] [2023-12-02 19:54:24,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107518559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:54:24,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:54:24,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-02 19:54:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579284577] [2023-12-02 19:54:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:54:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 19:54:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 19:54:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:54:24,105 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 19:54:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:25,008 INFO L93 Difference]: Finished difference Result 408 states and 491 transitions. [2023-12-02 19:54:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 19:54:25,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2023-12-02 19:54:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:25,012 INFO L225 Difference]: With dead ends: 408 [2023-12-02 19:54:25,012 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 19:54:25,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2023-12-02 19:54:25,013 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 331 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:25,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 159 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:54:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 19:54:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 280. [2023-12-02 19:54:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 189 states have (on average 1.1746031746031746) internal successors, (222), 203 states have internal predecessors, (222), 43 states have call successors, (43), 40 states have call predecessors, (43), 47 states have return successors, (62), 45 states have call predecessors, (62), 43 states have call successors, (62) [2023-12-02 19:54:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 327 transitions. [2023-12-02 19:54:25,057 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 327 transitions. Word has length 37 [2023-12-02 19:54:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:25,058 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 327 transitions. [2023-12-02 19:54:25,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 19:54:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 327 transitions. [2023-12-02 19:54:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 19:54:25,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:25,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:25,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:54:25,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:25,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash 601557894, now seen corresponding path program 1 times [2023-12-02 19:54:25,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:25,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579292159] [2023-12-02 19:54:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:25,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:54:25,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579292159] [2023-12-02 19:54:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579292159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:54:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553577564] [2023-12-02 19:54:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:25,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:54:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:54:25,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:54:25,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:54:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:25,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 19:54:25,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:54:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:54:26,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:54:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:54:27,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553577564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:54:27,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1349914112] [2023-12-02 19:54:27,150 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 19:54:27,150 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:54:27,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:54:27,162 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:54:27,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:54:30,261 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 7 for LOIs [2023-12-02 19:54:30,265 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-12-02 19:54:30,378 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 18 for LOIs [2023-12-02 19:54:30,476 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-12-02 19:54:30,477 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2023-12-02 19:54:30,482 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 10 for LOIs [2023-12-02 19:54:30,483 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:54:32,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3904#(and (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 2147483648)) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 2147483647) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483648)) (or (and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (= |timeShift_isLowWaterLevel_#res#1| 0) (= |timeShift_isLowWaterSensorDry_#res#1| 1) (= ~waterLevel~0 0)) (and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (= |old(~pumpRunning~0)| 0))) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)))' at error location [2023-12-02 19:54:32,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:54:32,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:54:32,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 31 [2023-12-02 19:54:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987118102] [2023-12-02 19:54:32,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:54:32,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 19:54:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 19:54:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=3396, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 19:54:32,617 INFO L87 Difference]: Start difference. First operand 280 states and 327 transitions. Second operand has 31 states, 28 states have (on average 3.392857142857143) internal successors, (95), 25 states have internal predecessors, (95), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-02 19:54:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:34,467 INFO L93 Difference]: Finished difference Result 970 states and 1201 transitions. [2023-12-02 19:54:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-02 19:54:34,468 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.392857142857143) internal successors, (95), 25 states have internal predecessors, (95), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 65 [2023-12-02 19:54:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:34,475 INFO L225 Difference]: With dead ends: 970 [2023-12-02 19:54:34,475 INFO L226 Difference]: Without dead ends: 752 [2023-12-02 19:54:34,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 153 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3023 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1159, Invalid=7031, Unknown=0, NotChecked=0, Total=8190 [2023-12-02 19:54:34,482 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1059 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:34,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 404 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 19:54:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-02 19:54:34,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 652. [2023-12-02 19:54:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 441 states have (on average 1.1609977324263039) internal successors, (512), 477 states have internal predecessors, (512), 102 states have call successors, (102), 84 states have call predecessors, (102), 108 states have return successors, (166), 111 states have call predecessors, (166), 102 states have call successors, (166) [2023-12-02 19:54:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 780 transitions. [2023-12-02 19:54:34,575 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 780 transitions. Word has length 65 [2023-12-02 19:54:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:34,575 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 780 transitions. [2023-12-02 19:54:34,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.392857142857143) internal successors, (95), 25 states have internal predecessors, (95), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-02 19:54:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 780 transitions. [2023-12-02 19:54:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 19:54:34,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:54:34,581 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 19:54:34,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:54:34,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 19:54:34,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:54:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:54:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1665248009, now seen corresponding path program 1 times [2023-12-02 19:54:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:54:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644786711] [2023-12-02 19:54:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:54:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 52 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 19:54:36,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:54:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644786711] [2023-12-02 19:54:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644786711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:54:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971785224] [2023-12-02 19:54:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:54:36,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:54:36,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:54:36,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:54:36,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:54:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:54:36,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 19:54:36,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:54:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 68 proven. 71 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:54:36,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:54:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 32 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 19:54:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971785224] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:54:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1041593972] [2023-12-02 19:54:37,923 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 19:54:37,923 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:54:37,924 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:54:37,924 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:54:37,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:54:39,935 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 7 for LOIs [2023-12-02 19:54:39,937 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-12-02 19:54:40,031 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 18 for LOIs [2023-12-02 19:54:40,101 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-12-02 19:54:40,102 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2023-12-02 19:54:40,106 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 10 for LOIs [2023-12-02 19:54:40,107 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:54:41,804 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6870#(and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483648)) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (<= ~methaneLevelCritical~0 2147483647) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (<= 0 (+ ~methaneLevelCritical~0 2147483648)))' at error location [2023-12-02 19:54:41,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:54:41,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:54:41,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 43 [2023-12-02 19:54:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48374489] [2023-12-02 19:54:41,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:54:41,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-02 19:54:41,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:54:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-02 19:54:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=4396, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 19:54:41,809 INFO L87 Difference]: Start difference. First operand 652 states and 780 transitions. Second operand has 43 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 40 states have internal predecessors, (176), 26 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (39), 21 states have call predecessors, (39), 26 states have call successors, (39) [2023-12-02 19:54:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:54:42,705 INFO L93 Difference]: Finished difference Result 908 states and 1087 transitions. [2023-12-02 19:54:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 19:54:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 40 states have internal predecessors, (176), 26 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (39), 21 states have call predecessors, (39), 26 states have call successors, (39) Word has length 114 [2023-12-02 19:54:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:54:42,707 INFO L225 Difference]: With dead ends: 908 [2023-12-02 19:54:42,707 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:54:42,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 288 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2940 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1028, Invalid=6282, Unknown=0, NotChecked=0, Total=7310 [2023-12-02 19:54:42,714 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 386 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:54:42,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 289 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:54:42,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:54:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:54:42,715 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 19:54:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:54:42,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2023-12-02 19:54:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:54:42,715 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:54:42,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 40 states have internal predecessors, (176), 26 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (39), 21 states have call predecessors, (39), 26 states have call successors, (39) [2023-12-02 19:54:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:54:42,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:54:42,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:54:42,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:54:42,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:54:42,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:54:44,834 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 586 592) no Hoare annotation was computed. [2023-12-02 19:54:44,835 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 586 592) the Hoare annotation is: true [2023-12-02 19:54:44,835 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 897 908) the Hoare annotation is: (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (and (not (= |old(~methaneLevelCritical~0)| 0)) (not (= |old(~methaneLevelCritical~0)| 1)))) (.cse3 (= ~methaneLevelCritical~0 1))) (and (or (not (= ~waterLevel~0 1)) (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0)) .cse3))) [2023-12-02 19:54:44,835 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 897 908) no Hoare annotation was computed. [2023-12-02 19:54:44,835 INFO L899 garLoopResultBuilder]: For program point L800(lines 775 804) no Hoare annotation was computed. [2023-12-02 19:54:44,835 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 775 804) no Hoare annotation was computed. [2023-12-02 19:54:44,835 INFO L899 garLoopResultBuilder]: For program point L796(line 796) no Hoare annotation was computed. [2023-12-02 19:54:44,835 INFO L899 garLoopResultBuilder]: For program point L789(lines 789 793) no Hoare annotation was computed. [2023-12-02 19:54:44,836 INFO L902 garLoopResultBuilder]: At program point L789-1(lines 789 793) the Hoare annotation is: true [2023-12-02 19:54:44,836 INFO L902 garLoopResultBuilder]: At program point L785-2(lines 785 799) the Hoare annotation is: true [2023-12-02 19:54:44,836 INFO L902 garLoopResultBuilder]: At program point L781(line 781) the Hoare annotation is: true [2023-12-02 19:54:44,836 INFO L899 garLoopResultBuilder]: For program point L781-1(line 781) no Hoare annotation was computed. [2023-12-02 19:54:44,836 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 775 804) the Hoare annotation is: true [2023-12-02 19:54:44,836 INFO L895 garLoopResultBuilder]: At program point L634(line 634) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 2))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1))) [2023-12-02 19:54:44,836 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L895 garLoopResultBuilder]: At program point L639(line 639) the Hoare annotation is: (let ((.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (and .cse3 (= ~waterLevel~0 1))) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)) (and .cse3 (= 2 ~waterLevel~0) .cse0)))) [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L639-1(lines 620 644) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 74) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L573-1(lines 573 579) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 53 77) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L978(line 978) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L566-1(lines 565 584) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L628(lines 628 636) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L624(lines 624 641) no Hoare annotation was computed. [2023-12-02 19:54:44,837 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 562 585) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-12-02 19:54:44,837 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse7 (= ~methaneLevelCritical~0 1))) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse8 (= 1 ~systemActive~0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse9 (not .cse7))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not .cse6) .cse9)) (.cse2 (not .cse8)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (and (= 2 ~waterLevel~0) (or .cse6 .cse7) .cse8 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse9) (or .cse3 .cse6)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (and .cse3 (= ~waterLevel~0 1))) (or .cse1 .cse2 .cse4 (and .cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse5) (or .cse0 .cse1 .cse2 .cse4 .cse5))))) [2023-12-02 19:54:44,837 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-12-02 19:54:44,838 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 562 585) no Hoare annotation was computed. [2023-12-02 19:54:44,838 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 978) no Hoare annotation was computed. [2023-12-02 19:54:44,838 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 909 917) the Hoare annotation is: true [2023-12-02 19:54:44,838 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 909 917) no Hoare annotation was computed. [2023-12-02 19:54:44,838 INFO L895 garLoopResultBuilder]: At program point L543(lines 496 544) the Hoare annotation is: false [2023-12-02 19:54:44,838 INFO L899 garLoopResultBuilder]: For program point L498(lines 497 542) no Hoare annotation was computed. [2023-12-02 19:54:44,838 INFO L895 garLoopResultBuilder]: At program point L519(line 519) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2))) [2023-12-02 19:54:44,838 INFO L895 garLoopResultBuilder]: At program point L540(lines 497 542) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse5 (or .cse1 (= ~methaneLevelCritical~0 1))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse0 .cse5 .cse2 .cse3)))) [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L507(lines 507 513) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L507-1(lines 507 513) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L895 garLoopResultBuilder]: At program point L533-2(lines 527 538) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2))) [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L517(lines 517 523) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L517-1(lines 517 523) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L546(lines 487 550) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L895 garLoopResultBuilder]: At program point L509(line 509) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse5 (or .cse1 (= ~methaneLevelCritical~0 1))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse0 .cse5 .cse2 .cse3)))) [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L856(lines 856 863) no Hoare annotation was computed. [2023-12-02 19:54:44,839 INFO L899 garLoopResultBuilder]: For program point L856-2(lines 856 863) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L895 garLoopResultBuilder]: At program point L684(line 684) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 1))))) [2023-12-02 19:54:44,840 INFO L899 garLoopResultBuilder]: For program point L684-1(line 684) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 594 618) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse3 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse3 (not (= 2 ~waterLevel~0))))) [2023-12-02 19:54:44,840 INFO L895 garLoopResultBuilder]: At program point L608(line 608) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0))))) [2023-12-02 19:54:44,840 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 594 618) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L899 garLoopResultBuilder]: For program point L602(lines 602 610) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L899 garLoopResultBuilder]: For program point L598(lines 598 615) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L895 garLoopResultBuilder]: At program point L613(line 613) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2023-12-02 19:54:44,840 INFO L899 garLoopResultBuilder]: For program point L613-1(lines 594 618) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 885 896) no Hoare annotation was computed. [2023-12-02 19:54:44,840 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 885 896) the Hoare annotation is: (let ((.cse3 (not (= ~methaneLevelCritical~0 0)))) (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (and .cse3 (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (= ~waterLevel~0 1)) (or (and .cse0 .cse3) (= 2 ~waterLevel~0) .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)))))) [2023-12-02 19:54:44,842 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:54:44,844 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:54:44,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:54:44 BoogieIcfgContainer [2023-12-02 19:54:44,857 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:54:44,858 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:54:44,858 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:54:44,858 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:54:44,858 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:54:21" (3/4) ... [2023-12-02 19:54:44,860 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:54:44,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 19:54:44,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 19:54:44,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 19:54:44,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 19:54:44,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 19:54:44,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:54:44,864 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 19:54:44,873 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-12-02 19:54:44,874 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 19:54:44,875 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 19:54:44,875 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:54:44,876 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:54:44,904 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || (!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1)))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && ((((!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1))) || !((1 == systemActive))) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) [2023-12-02 19:54:44,944 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || (!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1)))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && ((((!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1))) || !((1 == systemActive))) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) [2023-12-02 19:54:44,991 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:54:44,992 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:54:44,992 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:54:44,993 INFO L158 Benchmark]: Toolchain (without parser) took 24844.77ms. Allocated memory was 153.1MB in the beginning and 526.4MB in the end (delta: 373.3MB). Free memory was 121.1MB in the beginning and 184.3MB in the end (delta: -63.2MB). Peak memory consumption was 312.0MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,994 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:54:44,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.38ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 101.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.26ms. Allocated memory is still 153.1MB. Free memory was 101.1MB in the beginning and 98.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,995 INFO L158 Benchmark]: Boogie Preprocessor took 37.40ms. Allocated memory is still 153.1MB. Free memory was 98.6MB in the beginning and 97.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,995 INFO L158 Benchmark]: RCFGBuilder took 554.08ms. Allocated memory is still 153.1MB. Free memory was 97.0MB in the beginning and 69.3MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,996 INFO L158 Benchmark]: TraceAbstraction took 23536.89ms. Allocated memory was 153.1MB in the beginning and 526.4MB in the end (delta: 373.3MB). Free memory was 68.5MB in the beginning and 191.6MB in the end (delta: -123.2MB). Peak memory consumption was 253.2MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,996 INFO L158 Benchmark]: Witness Printer took 134.79ms. Allocated memory is still 526.4MB. Free memory was 191.6MB in the beginning and 184.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:54:44,998 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.38ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 101.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.26ms. Allocated memory is still 153.1MB. Free memory was 101.1MB in the beginning and 98.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.40ms. Allocated memory is still 153.1MB. Free memory was 98.6MB in the beginning and 97.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 554.08ms. Allocated memory is still 153.1MB. Free memory was 97.0MB in the beginning and 69.3MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 23536.89ms. Allocated memory was 153.1MB in the beginning and 526.4MB in the end (delta: 373.3MB). Free memory was 68.5MB in the beginning and 191.6MB in the end (delta: -123.2MB). Peak memory consumption was 253.2MB. Max. memory is 16.1GB. * Witness Printer took 134.79ms. Allocated memory is still 526.4MB. Free memory was 191.6MB in the beginning and 184.3MB 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,"Specification1_spec.i","") [49] - GenericResultAtLocation [Line: 78]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [78] - GenericResultAtLocation [Line: 116]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [116] - GenericResultAtLocation [Line: 482]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [482] - GenericResultAtLocation [Line: 551]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [551] - GenericResultAtLocation [Line: 773]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [773] - GenericResultAtLocation [Line: 869]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [869] - GenericResultAtLocation [Line: 973]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [973] * 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: 978]: 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 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.5s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2053 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2030 mSDsluCounter, 1553 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1136 mSDsCounter, 1196 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1984 IncrementalHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1196 mSolverCounterUnsat, 417 mSDtfsCounter, 1984 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 702 GetRequests, 467 SyntacticMatches, 10 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6199 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=652occurred in iteration=9, InterpolantAutomatonStates: 113, 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, 172 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 546 PreInvPairs, 590 NumberOfFragments, 791 HoareAnnotationTreeSize, 546 FomulaSimplifications, 6581 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 8084 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 729 ConstructedInterpolants, 0 QuantifiedInterpolants, 3112 SizeOfPredicates, 19 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 332/510 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: 497]: Loop Invariant Derived loop invariant: ((((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) || (((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || (((((pumpRunning == 0) && (2 == waterLevel)) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 496]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 785]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || (!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1)))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && ((((!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1))) || !((1 == systemActive))) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) RESULT: Ultimate proved your program to be correct! [2023-12-02 19:54:45,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a320b9c7-f016-42a3-a286-02ad0a2cf50c/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