./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/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_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/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_eb1e2441-1895-4d41-b633-ed2c0613d55d/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 ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:36:57,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:36:57,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:36:57,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:36:57,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:36:57,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:36:57,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:36:57,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:36:57,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:36:57,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:36:57,548 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:36:57,549 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:36:57,549 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:36:57,550 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:36:57,550 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:36:57,551 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:36:57,551 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:36:57,552 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:36:57,552 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:36:57,553 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:36:57,553 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:36:57,554 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:36:57,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:36:57,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:36:57,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:36:57,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:36:57,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:36:57,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:36:57,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:36:57,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:36:57,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:36:57,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:36:57,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:36:57,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:36:57,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:36:57,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:36:57,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:36:57,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:36:57,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:36:57,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:36:57,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:36:57,560 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:36:57,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:36:57,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:36:57,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:36:57,561 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:36:57,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:36:57,561 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_eb1e2441-1895-4d41-b633-ed2c0613d55d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d [2023-12-02 12:36:57,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:36:57,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:36:57,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:36:57,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:36:57,815 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:36:57,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2023-12-02 12:37:00,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:37:00,838 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:37:00,839 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2023-12-02 12:37:00,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/data/abc59c62b/79274fc0fec047b494d3ba7fc6e3c1db/FLAGe6702c2e8 [2023-12-02 12:37:00,867 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/data/abc59c62b/79274fc0fec047b494d3ba7fc6e3c1db [2023-12-02 12:37:00,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:37:00,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:37:00,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:37:00,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:37:00,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:37:00,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:37:00" (1/1) ... [2023-12-02 12:37:00,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414c9626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:00, skipping insertion in model container [2023-12-02 12:37:00,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:37:00" (1/1) ... [2023-12-02 12:37:00,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:37:01,115 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_eb1e2441-1895-4d41-b633-ed2c0613d55d/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2023-12-02 12:37:01,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:37:01,208 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:37:01,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2023-12-02 12:37:01,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] [2023-12-02 12:37:01,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [322] [2023-12-02 12:37:01,218 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [331] [2023-12-02 12:37:01,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [697] [2023-12-02 12:37:01,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [724] [2023-12-02 12:37:01,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [823] [2023-12-02 12:37:01,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [917] [2023-12-02 12:37:01,236 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_eb1e2441-1895-4d41-b633-ed2c0613d55d/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2023-12-02 12:37:01,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:37:01,307 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:37:01,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01 WrapperNode [2023-12-02 12:37:01,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:37:01,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:37:01,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:37:01,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:37:01,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,364 INFO L138 Inliner]: procedures = 54, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 206 [2023-12-02 12:37:01,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:37:01,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:37:01,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:37:01,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:37:01,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:37:01,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:37:01,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:37:01,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:37:01,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (1/1) ... [2023-12-02 12:37:01,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:37:01,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:01,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:37:01,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:37:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:37:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 12:37:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 12:37:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 12:37:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 12:37:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 12:37:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 12:37:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 12:37:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 12:37:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 12:37:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 12:37:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-12-02 12:37:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-12-02 12:37:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:37:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 12:37:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 12:37:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:37:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:37:01,562 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:37:01,564 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:37:01,804 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:37:01,928 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:37:01,928 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:37:01,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:37:01 BoogieIcfgContainer [2023-12-02 12:37:01,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:37:01,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:37:01,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:37:01,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:37:01,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:37:00" (1/3) ... [2023-12-02 12:37:01,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246ab93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:37:01, skipping insertion in model container [2023-12-02 12:37:01,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:37:01" (2/3) ... [2023-12-02 12:37:01,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246ab93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:37:01, skipping insertion in model container [2023-12-02 12:37:01,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:37:01" (3/3) ... [2023-12-02 12:37:01,939 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2023-12-02 12:37:01,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:37:01,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:37:01,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:37:02,003 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;@9d26f7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:37:02,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:37:02,007 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 12:37:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 12:37:02,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:02,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:02,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:02,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash 706846516, now seen corresponding path program 1 times [2023-12-02 12:37:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845587010] [2023-12-02 12:37:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:02,213 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 12:37:02,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845587010] [2023-12-02 12:37:02,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845587010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:02,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:37:02,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:37:02,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771922073] [2023-12-02 12:37:02,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:02,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:37:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:02,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:37:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:37:02,259 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:37:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:02,330 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2023-12-02 12:37:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:37:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 12:37:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:02,344 INFO L225 Difference]: With dead ends: 112 [2023-12-02 12:37:02,344 INFO L226 Difference]: Without dead ends: 52 [2023-12-02 12:37:02,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:37:02,353 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 12:37:02,354 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 12:37:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-02 12:37:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-02 12:37:02,394 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 12:37:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-12-02 12:37:02,398 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 12 [2023-12-02 12:37:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:02,398 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-12-02 12:37:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:37:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-12-02 12:37:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 12:37:02,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:02,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:02,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:37:02,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:02,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash -799333322, now seen corresponding path program 1 times [2023-12-02 12:37:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695823430] [2023-12-02 12:37:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:02,499 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 12:37:02,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695823430] [2023-12-02 12:37:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695823430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:02,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:37:02,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:37:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139036493] [2023-12-02 12:37:02,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:02,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:37:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:02,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:37:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:37:02,504 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:37:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:02,550 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-12-02 12:37:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:37:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 12:37:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:02,552 INFO L225 Difference]: With dead ends: 81 [2023-12-02 12:37:02,553 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 12:37:02,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:37:02,555 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 12:37:02,556 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 12:37:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 12:37:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 12:37:02,566 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 12:37:02,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-12-02 12:37:02,568 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 13 [2023-12-02 12:37:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:02,568 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-12-02 12:37:02,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:37:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-12-02 12:37:02,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:37:02,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:02,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:02,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:37:02,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:02,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash 199169726, now seen corresponding path program 1 times [2023-12-02 12:37:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712106851] [2023-12-02 12:37:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:02,669 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 12:37:02,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712106851] [2023-12-02 12:37:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712106851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:37:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:37:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936776410] [2023-12-02 12:37:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:37:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:37:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:37:02,673 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:37:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:02,714 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2023-12-02 12:37:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:37:02,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 12:37:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:02,717 INFO L225 Difference]: With dead ends: 86 [2023-12-02 12:37:02,717 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 12:37:02,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:37:02,720 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 12:37:02,721 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 12:37:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 12:37:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 12:37:02,731 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 12:37:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-12-02 12:37:02,733 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 15 [2023-12-02 12:37:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:02,733 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-12-02 12:37:02,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:37:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-12-02 12:37:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 12:37:02,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:02,736 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 12:37:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:37:02,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:02,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 685855569, now seen corresponding path program 1 times [2023-12-02 12:37:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090482065] [2023-12-02 12:37:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:02,833 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 12:37:02,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:02,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090482065] [2023-12-02 12:37:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090482065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:02,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:37:02,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:37:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534172820] [2023-12-02 12:37:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:37:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:37:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:37:02,837 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 12:37:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:02,903 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2023-12-02 12:37:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:37:02,904 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 12:37:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:02,906 INFO L225 Difference]: With dead ends: 118 [2023-12-02 12:37:02,906 INFO L226 Difference]: Without dead ends: 76 [2023-12-02 12:37:02,919 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 12:37:02,921 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:02,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:37:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-02 12:37:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-12-02 12:37:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 56 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-02 12:37:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2023-12-02 12:37:02,940 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 22 [2023-12-02 12:37:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:02,940 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2023-12-02 12:37:02,940 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 12:37:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2023-12-02 12:37:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 12:37:02,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:02,942 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] [2023-12-02 12:37:02,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:37:02,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:02,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:02,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1970980335, now seen corresponding path program 1 times [2023-12-02 12:37:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:02,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617121160] [2023-12-02 12:37:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:03,157 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 12:37:03,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:03,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617121160] [2023-12-02 12:37:03,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617121160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:03,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:37:03,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:37:03,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023353846] [2023-12-02 12:37:03,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:03,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:37:03,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:37:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:37:03,161 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:37:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:03,292 INFO L93 Difference]: Finished difference Result 201 states and 242 transitions. [2023-12-02 12:37:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:37:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-12-02 12:37:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:03,295 INFO L225 Difference]: With dead ends: 201 [2023-12-02 12:37:03,295 INFO L226 Difference]: Without dead ends: 129 [2023-12-02 12:37:03,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:37:03,298 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 49 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:03,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:37:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-02 12:37:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2023-12-02 12:37:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 86 states have internal predecessors, (91), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2023-12-02 12:37:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2023-12-02 12:37:03,321 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 26 [2023-12-02 12:37:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:03,322 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2023-12-02 12:37:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:37:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2023-12-02 12:37:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 12:37:03,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:03,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:03,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:37:03,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:03,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 957732786, now seen corresponding path program 1 times [2023-12-02 12:37:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:03,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641668862] [2023-12-02 12:37:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:37:03,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641668862] [2023-12-02 12:37:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641668862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:03,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:37:03,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:37:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933936133] [2023-12-02 12:37:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:37:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:37:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:37:03,441 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 12:37:03,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:03,606 INFO L93 Difference]: Finished difference Result 301 states and 356 transitions. [2023-12-02 12:37:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:37:03,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 47 [2023-12-02 12:37:03,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:03,611 INFO L225 Difference]: With dead ends: 301 [2023-12-02 12:37:03,611 INFO L226 Difference]: Without dead ends: 229 [2023-12-02 12:37:03,612 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 12:37:03,613 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:03,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 180 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:37:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-02 12:37:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 217. [2023-12-02 12:37:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 161 states have internal predecessors, (175), 33 states have call successors, (33), 33 states have call predecessors, (33), 37 states have return successors, (45), 35 states have call predecessors, (45), 33 states have call successors, (45) [2023-12-02 12:37:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 253 transitions. [2023-12-02 12:37:03,656 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 253 transitions. Word has length 47 [2023-12-02 12:37:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:03,657 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 253 transitions. [2023-12-02 12:37:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 12:37:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 253 transitions. [2023-12-02 12:37:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 12:37:03,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:03,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:03,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:37:03,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:03,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:03,663 INFO L85 PathProgramCache]: Analyzing trace with hash 364006996, now seen corresponding path program 1 times [2023-12-02 12:37:03,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:03,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105441651] [2023-12-02 12:37:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:03,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 12:37:04,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105441651] [2023-12-02 12:37:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105441651] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236866934] [2023-12-02 12:37:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:04,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:04,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:04,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:04,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:37:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:04,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:37:04,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:37:04,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:37:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236866934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:04,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:37:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 12 [2023-12-02 12:37:04,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367117703] [2023-12-02 12:37:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:04,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:37:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:37:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:37:04,221 INFO L87 Difference]: Start difference. First operand 217 states and 253 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 12:37:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:04,312 INFO L93 Difference]: Finished difference Result 223 states and 258 transitions. [2023-12-02 12:37:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:37:04,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2023-12-02 12:37:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:04,316 INFO L225 Difference]: With dead ends: 223 [2023-12-02 12:37:04,316 INFO L226 Difference]: Without dead ends: 221 [2023-12-02 12:37:04,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:37:04,318 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:04,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 107 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:37:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-02 12:37:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 217. [2023-12-02 12:37:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 146 states have (on average 1.1849315068493151) internal successors, (173), 161 states have internal predecessors, (173), 33 states have call successors, (33), 33 states have call predecessors, (33), 37 states have return successors, (45), 35 states have call predecessors, (45), 33 states have call successors, (45) [2023-12-02 12:37:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 251 transitions. [2023-12-02 12:37:04,349 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 251 transitions. Word has length 50 [2023-12-02 12:37:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:04,349 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 251 transitions. [2023-12-02 12:37:04,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 12:37:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 251 transitions. [2023-12-02 12:37:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 12:37:04,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:04,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:04,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:37:04,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 12:37:04,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:04,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1788232429, now seen corresponding path program 1 times [2023-12-02 12:37:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:04,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190338640] [2023-12-02 12:37:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 12:37:04,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:04,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190338640] [2023-12-02 12:37:04,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190338640] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:04,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508904995] [2023-12-02 12:37:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:04,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:04,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:04,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:04,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:37:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:04,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 12:37:04,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 12:37:05,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:37:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:37:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508904995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:37:05,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276926613] [2023-12-02 12:37:05,454 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-12-02 12:37:05,454 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:37:05,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:37:05,465 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:37:05,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:37:07,027 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 39 for LOIs [2023-12-02 12:37:07,237 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 38 for LOIs [2023-12-02 12:37:07,415 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 37 for LOIs [2023-12-02 12:37:07,427 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:37:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [276926613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:37:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [9, 7, 7] total 40 [2023-12-02 12:37:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849412161] [2023-12-02 12:37:09,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:09,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 12:37:09,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:09,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 12:37:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1294, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 12:37:09,384 INFO L87 Difference]: Start difference. First operand 217 states and 251 transitions. Second operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:37:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:12,584 INFO L93 Difference]: Finished difference Result 509 states and 606 transitions. [2023-12-02 12:37:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:37:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-12-02 12:37:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:12,588 INFO L225 Difference]: With dead ends: 509 [2023-12-02 12:37:12,588 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 12:37:12,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=598, Invalid=2824, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 12:37:12,591 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:12,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 232 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:37:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 12:37:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2023-12-02 12:37:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 190 states have (on average 1.1842105263157894) internal successors, (225), 204 states have internal predecessors, (225), 40 states have call successors, (40), 40 states have call predecessors, (40), 43 states have return successors, (55), 41 states have call predecessors, (55), 40 states have call successors, (55) [2023-12-02 12:37:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 320 transitions. [2023-12-02 12:37:12,624 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 320 transitions. Word has length 52 [2023-12-02 12:37:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:12,625 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 320 transitions. [2023-12-02 12:37:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:37:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 320 transitions. [2023-12-02 12:37:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 12:37:12,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:12,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:12,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 12:37:12,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 12:37:12,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:12,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2143592843, now seen corresponding path program 1 times [2023-12-02 12:37:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045336221] [2023-12-02 12:37:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 12:37:13,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045336221] [2023-12-02 12:37:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045336221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946314623] [2023-12-02 12:37:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:13,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:13,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:13,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:37:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:13,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 12:37:13,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 12:37:13,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:37:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:37:13,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946314623] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:37:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159753531] [2023-12-02 12:37:13,864 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2023-12-02 12:37:13,864 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:37:13,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:37:13,865 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:37:13,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:37:14,824 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 39 for LOIs [2023-12-02 12:37:14,969 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 38 for LOIs [2023-12-02 12:37:15,088 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 37 for LOIs [2023-12-02 12:37:15,095 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 30 for LOIs [2023-12-02 12:37:15,100 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:37:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1159753531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:17,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:37:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [16, 7, 7] total 49 [2023-12-02 12:37:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73657087] [2023-12-02 12:37:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:17,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 12:37:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:17,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 12:37:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2016, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 12:37:17,075 INFO L87 Difference]: Start difference. First operand 274 states and 320 transitions. Second operand has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:37:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:21,972 INFO L93 Difference]: Finished difference Result 667 states and 844 transitions. [2023-12-02 12:37:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 12:37:21,973 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-12-02 12:37:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:21,976 INFO L225 Difference]: With dead ends: 667 [2023-12-02 12:37:21,976 INFO L226 Difference]: Without dead ends: 490 [2023-12-02 12:37:21,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=892, Invalid=5114, Unknown=0, NotChecked=0, Total=6006 [2023-12-02 12:37:21,979 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 127 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:21,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 228 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 12:37:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-02 12:37:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 350. [2023-12-02 12:37:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 239 states have (on average 1.1757322175732217) internal successors, (281), 259 states have internal predecessors, (281), 54 states have call successors, (54), 54 states have call predecessors, (54), 56 states have return successors, (74), 54 states have call predecessors, (74), 54 states have call successors, (74) [2023-12-02 12:37:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 409 transitions. [2023-12-02 12:37:22,054 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 409 transitions. Word has length 55 [2023-12-02 12:37:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:22,054 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 409 transitions. [2023-12-02 12:37:22,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:37:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 409 transitions. [2023-12-02 12:37:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 12:37:22,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:22,056 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 12:37:22,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:37:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:22,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:22,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash 707534897, now seen corresponding path program 1 times [2023-12-02 12:37:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93044951] [2023-12-02 12:37:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 12:37:22,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:22,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93044951] [2023-12-02 12:37:22,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93044951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:22,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67696940] [2023-12-02 12:37:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:22,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:22,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:22,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:22,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:37:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:22,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 12:37:22,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:37:23,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:37:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 12:37:23,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67696940] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:37:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [685049370] [2023-12-02 12:37:23,654 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 12:37:23,654 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:37:23,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:37:23,655 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:37:23,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:37:26,494 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2023-12-02 12:37:26,583 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2023-12-02 12:37:26,696 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 36 for LOIs [2023-12-02 12:37:26,832 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 42 for LOIs [2023-12-02 12:37:26,855 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 11 for LOIs [2023-12-02 12:37:26,856 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:37:30,691 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6402#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 12:37:30,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:37:30,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:37:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 13] total 35 [2023-12-02 12:37:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333947457] [2023-12-02 12:37:30,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:37:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 12:37:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:30,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 12:37:30,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=4180, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 12:37:30,694 INFO L87 Difference]: Start difference. First operand 350 states and 409 transitions. Second operand has 35 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 32 states have internal predecessors, (105), 13 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2023-12-02 12:37:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:42,474 INFO L93 Difference]: Finished difference Result 2096 states and 2742 transitions. [2023-12-02 12:37:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2023-12-02 12:37:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 32 states have internal predecessors, (105), 13 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) Word has length 58 [2023-12-02 12:37:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:42,485 INFO L225 Difference]: With dead ends: 2096 [2023-12-02 12:37:42,485 INFO L226 Difference]: Without dead ends: 1754 [2023-12-02 12:37:42,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32329 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=7973, Invalid=71269, Unknown=0, NotChecked=0, Total=79242 [2023-12-02 12:37:42,504 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1887 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 1158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 4395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1158 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:42,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1149 Invalid, 4395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1158 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 12:37:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2023-12-02 12:37:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1231. [2023-12-02 12:37:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 851 states have (on average 1.1938895417156288) internal successors, (1016), 911 states have internal predecessors, (1016), 186 states have call successors, (186), 167 states have call predecessors, (186), 193 states have return successors, (347), 184 states have call predecessors, (347), 186 states have call successors, (347) [2023-12-02 12:37:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1549 transitions. [2023-12-02 12:37:42,711 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1549 transitions. Word has length 58 [2023-12-02 12:37:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:42,712 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1549 transitions. [2023-12-02 12:37:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 32 states have internal predecessors, (105), 13 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2023-12-02 12:37:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1549 transitions. [2023-12-02 12:37:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 12:37:42,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:42,715 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 12:37:42,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 12:37:42,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:42,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1011240985, now seen corresponding path program 1 times [2023-12-02 12:37:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:42,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856296364] [2023-12-02 12:37:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 12:37:43,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856296364] [2023-12-02 12:37:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856296364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127821016] [2023-12-02 12:37:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:43,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:43,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:37:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:43,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 12:37:43,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:37:43,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:37:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 12:37:43,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127821016] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:37:43,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793997628] [2023-12-02 12:37:43,732 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 12:37:43,732 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:37:43,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:37:43,733 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:37:43,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:37:44,341 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 38 for LOIs [2023-12-02 12:37:44,637 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 16 for LOIs [2023-12-02 12:37:44,746 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 43 for LOIs [2023-12-02 12:37:44,761 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 28 for LOIs [2023-12-02 12:37:44,765 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 19 for LOIs [2023-12-02 12:37:44,767 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:37:47,058 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11679#(and (<= 1 |#StackHeapBarrier|) (= ~head~0.offset 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (= ~cleanupTimeShifts~0 4))' at error location [2023-12-02 12:37:47,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:37:47,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:37:47,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 28 [2023-12-02 12:37:47,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936513382] [2023-12-02 12:37:47,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:37:47,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 12:37:47,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 12:37:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 12:37:47,061 INFO L87 Difference]: Start difference. First operand 1231 states and 1549 transitions. Second operand has 28 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2023-12-02 12:37:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:48,160 INFO L93 Difference]: Finished difference Result 2517 states and 3233 transitions. [2023-12-02 12:37:48,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 12:37:48,161 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) Word has length 58 [2023-12-02 12:37:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:48,173 INFO L225 Difference]: With dead ends: 2517 [2023-12-02 12:37:48,173 INFO L226 Difference]: Without dead ends: 1791 [2023-12-02 12:37:48,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=655, Invalid=5507, Unknown=0, NotChecked=0, Total=6162 [2023-12-02 12:37:48,178 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 369 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:48,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 184 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 12:37:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2023-12-02 12:37:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1522. [2023-12-02 12:37:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1049 states have (on average 1.1715919923736893) internal successors, (1229), 1128 states have internal predecessors, (1229), 230 states have call successors, (230), 208 states have call predecessors, (230), 242 states have return successors, (395), 225 states have call predecessors, (395), 230 states have call successors, (395) [2023-12-02 12:37:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1854 transitions. [2023-12-02 12:37:48,377 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1854 transitions. Word has length 58 [2023-12-02 12:37:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:48,377 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1854 transitions. [2023-12-02 12:37:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2023-12-02 12:37:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1854 transitions. [2023-12-02 12:37:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 12:37:48,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:48,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:48,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 12:37:48,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:48,581 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:48,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 208031817, now seen corresponding path program 1 times [2023-12-02 12:37:48,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:48,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546565161] [2023-12-02 12:37:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 12:37:49,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546565161] [2023-12-02 12:37:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546565161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562149201] [2023-12-02 12:37:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:49,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:49,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 12:37:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:49,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 12:37:49,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:37:49,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:37:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562149201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:37:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:37:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-12-02 12:37:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991057869] [2023-12-02 12:37:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:37:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 12:37:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:37:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 12:37:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-02 12:37:49,418 INFO L87 Difference]: Start difference. First operand 1522 states and 1854 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 12:37:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:50,031 INFO L93 Difference]: Finished difference Result 3016 states and 3860 transitions. [2023-12-02 12:37:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 12:37:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 85 [2023-12-02 12:37:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:50,045 INFO L225 Difference]: With dead ends: 3016 [2023-12-02 12:37:50,045 INFO L226 Difference]: Without dead ends: 1774 [2023-12-02 12:37:50,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-12-02 12:37:50,051 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 85 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:50,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 148 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:37:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2023-12-02 12:37:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1570. [2023-12-02 12:37:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1098 states have (on average 1.1721311475409837) internal successors, (1287), 1169 states have internal predecessors, (1287), 249 states have call successors, (249), 222 states have call predecessors, (249), 222 states have return successors, (397), 221 states have call predecessors, (397), 249 states have call successors, (397) [2023-12-02 12:37:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1933 transitions. [2023-12-02 12:37:50,369 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1933 transitions. Word has length 85 [2023-12-02 12:37:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:50,370 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 1933 transitions. [2023-12-02 12:37:50,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 12:37:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1933 transitions. [2023-12-02 12:37:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:37:50,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:50,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:50,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 12:37:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:50,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:50,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1688950344, now seen corresponding path program 2 times [2023-12-02 12:37:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321481852] [2023-12-02 12:37:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:37:50,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:37:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:37:50,656 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:37:50,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:37:50,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 12:37:50,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 12:37:50,662 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:37:50,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:37:50,703 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,706 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated [2023-12-02 12:37:50,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-12-02 12:37:50,713 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-12-02 12:37:50,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:37:50 BoogieIcfgContainer [2023-12-02 12:37:50,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:37:50,741 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:37:50,741 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:37:50,741 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:37:50,742 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:37:01" (3/4) ... [2023-12-02 12:37:50,743 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 12:37:50,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,758 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated [2023-12-02 12:37:50,759 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,759 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,761 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-12-02 12:37:50,762 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,762 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,763 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,763 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,763 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-12-02 12:37:50,764 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-12-02 12:37:50,863 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:37:50,863 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:37:50,864 INFO L158 Benchmark]: Toolchain (without parser) took 49993.28ms. Allocated memory was 180.4MB in the beginning and 549.5MB in the end (delta: 369.1MB). Free memory was 149.9MB in the beginning and 496.0MB in the end (delta: -346.1MB). Peak memory consumption was 336.2MB. Max. memory is 16.1GB. [2023-12-02 12:37:50,864 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:37:50,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.69ms. Allocated memory is still 180.4MB. Free memory was 149.7MB in the beginning and 133.6MB in the end (delta: 16.1MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-12-02 12:37:50,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.98ms. Allocated memory is still 180.4MB. Free memory was 133.6MB in the beginning and 131.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:37:50,865 INFO L158 Benchmark]: Boogie Preprocessor took 31.30ms. Allocated memory is still 180.4MB. Free memory was 131.5MB in the beginning and 130.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:37:50,866 INFO L158 Benchmark]: RCFGBuilder took 532.82ms. Allocated memory is still 180.4MB. Free memory was 130.2MB in the beginning and 140.5MB in the end (delta: -10.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 12:37:50,866 INFO L158 Benchmark]: TraceAbstraction took 48807.80ms. Allocated memory was 180.4MB in the beginning and 549.5MB in the end (delta: 369.1MB). Free memory was 139.5MB in the beginning and 191.3MB in the end (delta: -51.8MB). Peak memory consumption was 318.3MB. Max. memory is 16.1GB. [2023-12-02 12:37:50,867 INFO L158 Benchmark]: Witness Printer took 122.10ms. Allocated memory is still 549.5MB. Free memory was 191.3MB in the beginning and 496.0MB in the end (delta: -304.7MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2023-12-02 12:37:50,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.69ms. Allocated memory is still 180.4MB. Free memory was 149.7MB in the beginning and 133.6MB in the end (delta: 16.1MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.98ms. Allocated memory is still 180.4MB. Free memory was 133.6MB in the beginning and 131.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.30ms. Allocated memory is still 180.4MB. Free memory was 131.5MB in the beginning and 130.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 532.82ms. Allocated memory is still 180.4MB. Free memory was 130.2MB in the beginning and 140.5MB in the end (delta: -10.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 48807.80ms. Allocated memory was 180.4MB in the beginning and 549.5MB in the end (delta: 369.1MB). Free memory was 139.5MB in the beginning and 191.3MB in the end (delta: -51.8MB). Peak memory consumption was 318.3MB. Max. memory is 16.1GB. * Witness Printer took 122.10ms. Allocated memory is still 549.5MB. Free memory was 191.3MB in the beginning and 496.0MB in the end (delta: -304.7MB). Peak memory consumption was 8.9MB. 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,"scenario.i","") [49] - GenericResultAtLocation [Line: 118]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] - GenericResultAtLocation [Line: 322]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [322] - GenericResultAtLocation [Line: 331]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [331] - GenericResultAtLocation [Line: 697]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [697] - GenericResultAtLocation [Line: 724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [724] - GenericResultAtLocation [Line: 823]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [823] - GenericResultAtLocation [Line: 917]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [917] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 327]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L127] int pumpRunning = 0; [L128] int systemActive = 1; [L501] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L801] int retValue_acc ; [L802] int tmp ; [L806] FCALL select_helpers() [L807] FCALL select_features() [L808] CALL, EXPR valid_product() [L944] int retValue_acc ; [L947] retValue_acc = 1 [L948] return (retValue_acc); [L808] RET, EXPR valid_product() [L808] tmp = valid_product() [L810] COND TRUE \read(tmp) [L812] FCALL setup() [L813] CALL runTest() [L792] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L76] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L76] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___2)) [L98] tmp___1 = __VERIFIER_nondet_int() [L100] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L135] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L208] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND TRUE ! pumpRunning [L169] CALL, EXPR isHighWaterLevel() [L304] int retValue_acc ; [L305] int tmp ; [L306] int tmp___0 ; [L310] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L310] RET, EXPR isHighWaterSensorDry() [L310] tmp = isHighWaterSensorDry() [L312] COND FALSE !(\read(tmp)) [L315] tmp___0 = 1 [L317] retValue_acc = tmp___0 [L318] return (retValue_acc); [L169] RET, EXPR isHighWaterLevel() [L169] tmp = isHighWaterLevel() [L171] COND TRUE \read(tmp) [L173] CALL activatePump() [L223] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L227] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] tmp = isMethaneAlarm() [L229] COND FALSE !(\read(tmp)) [L233] CALL activatePump__wrappee__highWaterSensor() [L218] pumpRunning = 1 [L233] RET activatePump__wrappee__highWaterSensor() [L173] RET activatePump() [L208] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___2)) [L98] tmp___1 = __VERIFIER_nondet_int() [L100] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=0, waterLevel=1] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-2, tmp___2=-1, waterLevel=1] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND TRUE tmp == 0 [L709] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); [L709] RET, EXPR isPumpRunning() [L709] tmp___0 = isPumpRunning() [L711] COND TRUE \read(tmp___0) [L713] CALL __automaton_fail() [L327] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.7s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2817 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2793 mSDsluCounter, 2610 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2126 mSDsCounter, 1614 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6765 IncrementalHoareTripleChecker+Invalid, 8379 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1614 mSolverCounterUnsat, 484 mSDtfsCounter, 6765 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1230 GetRequests, 687 SyntacticMatches, 7 SemanticMatches, 536 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37037 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1570occurred in iteration=12, InterpolantAutomatonStates: 364, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 1188 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1052 ConstructedInterpolants, 0 QuantifiedInterpolants, 4301 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1518 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 279/421 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: OVERALL_TIME: 3.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 9, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 70, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 99, TOOLS_POST_TIME: 1.4s, TOOLS_POST_CALL_APPLICATIONS: 41, TOOLS_POST_CALL_TIME: 0.5s, TOOLS_POST_RETURN_APPLICATIONS: 34, TOOLS_POST_RETURN_TIME: 0.7s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 174, TOOLS_QUANTIFIERELIM_TIME: 2.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 230, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 28, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 70, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 2.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 34, CALL_SUMMARIZER_CACHE_MISSES: 7, CALL_SUMMARIZER_OVERALL_TIME: 0.3s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 564, DAG_COMPRESSION_RETAINED_NODES: 193, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 12:37:50,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1e2441-1895-4d41-b633-ed2c0613d55d/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE