./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product41.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_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/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_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/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_083f06ff-875f-4b94-a28a-e24dfde2a867/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 6e630fd4f7f92b97a7712eadcda02cdabe0d357899fc48fb3e7885213e7a8b80 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:52:18,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:52:18,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:52:18,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:52:18,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:52:18,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:52:18,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:52:19,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:52:19,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:52:19,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:52:19,002 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:52:19,002 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:52:19,003 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:52:19,003 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:52:19,004 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:52:19,004 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:52:19,005 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:52:19,005 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:52:19,006 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:52:19,006 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:52:19,007 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:52:19,007 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:52:19,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:52:19,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:52:19,009 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:52:19,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:52:19,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:52:19,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:52:19,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:52:19,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:52:19,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:52:19,012 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:52:19,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:52:19,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:52:19,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:52:19,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:52:19,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:52:19,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:52:19,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:52:19,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:52:19,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:52:19,014 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:52:19,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:52:19,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:52:19,015 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:52:19,015 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:52:19,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:52:19,015 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_083f06ff-875f-4b94-a28a-e24dfde2a867/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e630fd4f7f92b97a7712eadcda02cdabe0d357899fc48fb3e7885213e7a8b80 [2023-12-02 18:52:19,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:52:19,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:52:19,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:52:19,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:52:19,266 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:52:19,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c [2023-12-02 18:52:22,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:52:22,216 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:52:22,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c [2023-12-02 18:52:22,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/data/6fc101f46/5712a883cff549b78021ea42f54eec67/FLAGa6d4b9bb3 [2023-12-02 18:52:22,238 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/data/6fc101f46/5712a883cff549b78021ea42f54eec67 [2023-12-02 18:52:22,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:52:22,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:52:22,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:52:22,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:52:22,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:52:22,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fcdd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22, skipping insertion in model container [2023-12-02 18:52:22,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:52:22,542 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_083f06ff-875f-4b94-a28a-e24dfde2a867/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c[18234,18247] [2023-12-02 18:52:22,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:52:22,557 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:52:22,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [49] [2023-12-02 18:52:22,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [101] [2023-12-02 18:52:22,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [201] [2023-12-02 18:52:22,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [304] [2023-12-02 18:52:22,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [479] [2023-12-02 18:52:22,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [544] [2023-12-02 18:52:22,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [910] [2023-12-02 18:52:22,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [945] [2023-12-02 18:52:22,627 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_083f06ff-875f-4b94-a28a-e24dfde2a867/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c[18234,18247] [2023-12-02 18:52:22,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:52:22,649 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:52:22,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22 WrapperNode [2023-12-02 18:52:22,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:52:22,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:52:22,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:52:22,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:52:22,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,714 INFO L138 Inliner]: procedures = 55, calls = 98, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 198 [2023-12-02 18:52:22,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:52:22,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:52:22,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:52:22,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:52:22,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:52:22,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:52:22,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:52:22,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:52:22,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (1/1) ... [2023-12-02 18:52:22,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:52:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:22,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:52:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:52:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:52:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 18:52:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 18:52:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 18:52:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 18:52:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 18:52:22,823 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 18:52:22,823 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 18:52:22,824 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 18:52:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-12-02 18:52:22,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-12-02 18:52:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:52:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 18:52:22,824 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 18:52:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:52:22,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:52:22,903 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:52:22,904 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:52:23,114 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:52:23,242 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:52:23,243 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 18:52:23,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:23 BoogieIcfgContainer [2023-12-02 18:52:23,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:52:23,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:52:23,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:52:23,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:52:23,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:52:22" (1/3) ... [2023-12-02 18:52:23,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3d11d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:23, skipping insertion in model container [2023-12-02 18:52:23,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:52:22" (2/3) ... [2023-12-02 18:52:23,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3d11d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:23, skipping insertion in model container [2023-12-02 18:52:23,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:23" (3/3) ... [2023-12-02 18:52:23,253 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product41.cil.c [2023-12-02 18:52:23,267 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:52:23,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:52:23,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:52:23,315 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;@5f23237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:52:23,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:52:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 18:52:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:52:23,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:23,327 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:23,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:23,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1810367505, now seen corresponding path program 1 times [2023-12-02 18:52:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597994617] [2023-12-02 18:52:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:52:23,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597994617] [2023-12-02 18:52:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597994617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:23,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:52:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528486605] [2023-12-02 18:52:23,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:23,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:52:23,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:52:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:52:23,539 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:52:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:23,598 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2023-12-02 18:52:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:52:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-02 18:52:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:23,608 INFO L225 Difference]: With dead ends: 100 [2023-12-02 18:52:23,608 INFO L226 Difference]: Without dead ends: 46 [2023-12-02 18:52:23,611 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 18:52:23,614 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:23,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:52:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-02 18:52:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-02 18:52:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:52:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2023-12-02 18:52:23,649 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2023-12-02 18:52:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:23,649 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2023-12-02 18:52:23,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:52:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2023-12-02 18:52:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:52:23,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:23,652 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:23,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:52:23,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:23,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1272555773, now seen corresponding path program 1 times [2023-12-02 18:52:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316828413] [2023-12-02 18:52:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:52:23,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316828413] [2023-12-02 18:52:23,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316828413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:23,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:52:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534084969] [2023-12-02 18:52:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:23,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:52:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:52:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:52:23,756 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:52:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:23,791 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2023-12-02 18:52:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:52:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-02 18:52:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:23,793 INFO L225 Difference]: With dead ends: 69 [2023-12-02 18:52:23,793 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 18:52:23,794 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 18:52:23,796 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:52:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 18:52:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-02 18:52:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:52:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-12-02 18:52:23,805 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2023-12-02 18:52:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:23,805 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-12-02 18:52:23,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:52:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-12-02 18:52:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 18:52:23,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:23,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:52:23,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:23,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2098136871, now seen corresponding path program 1 times [2023-12-02 18:52:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:23,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065192185] [2023-12-02 18:52:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:52:23,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065192185] [2023-12-02 18:52:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065192185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:23,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:52:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522380544] [2023-12-02 18:52:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:52:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:52:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:52:23,906 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (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 18:52:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:23,940 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2023-12-02 18:52:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:52:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (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 24 [2023-12-02 18:52:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:23,941 INFO L225 Difference]: With dead ends: 74 [2023-12-02 18:52:23,942 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 18:52:23,942 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 18:52:23,944 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:23,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 33 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:52:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 18:52:23,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-02 18:52:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:52:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-12-02 18:52:23,952 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2023-12-02 18:52:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:23,953 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-12-02 18:52:23,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (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 18:52:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-12-02 18:52:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:52:23,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:23,955 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:52:23,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:23,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2028311185, now seen corresponding path program 1 times [2023-12-02 18:52:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023342803] [2023-12-02 18:52:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:52:24,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:24,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023342803] [2023-12-02 18:52:24,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023342803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:24,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:24,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:52:24,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330511641] [2023-12-02 18:52:24,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:24,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:52:24,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:52:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:52:24,230 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 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 18:52:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:24,351 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2023-12-02 18:52:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:52:24,352 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), 2 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 27 [2023-12-02 18:52:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:24,354 INFO L225 Difference]: With dead ends: 143 [2023-12-02 18:52:24,354 INFO L226 Difference]: Without dead ends: 107 [2023-12-02 18:52:24,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:52:24,357 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 66 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:24,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 152 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:52:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-02 18:52:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2023-12-02 18:52:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 73 states have internal predecessors, (85), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (19), 16 states have call predecessors, (19), 17 states have call successors, (19) [2023-12-02 18:52:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2023-12-02 18:52:24,381 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 27 [2023-12-02 18:52:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:24,381 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2023-12-02 18:52:24,382 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), 2 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 18:52:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2023-12-02 18:52:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 18:52:24,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:24,384 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:52:24,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:24,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -469925612, now seen corresponding path program 1 times [2023-12-02 18:52:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167438836] [2023-12-02 18:52:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:52:24,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167438836] [2023-12-02 18:52:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167438836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:52:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240304441] [2023-12-02 18:52:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:24,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:24,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:52:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:52:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:24,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:52:24,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:52:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:52:24,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:52:24,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240304441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:24,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:52:24,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-02 18:52:24,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904026589] [2023-12-02 18:52:24,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:24,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:52:24,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:52:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:52:24,601 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:52:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:24,648 INFO L93 Difference]: Finished difference Result 222 states and 279 transitions. [2023-12-02 18:52:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:52:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-02 18:52:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:24,651 INFO L225 Difference]: With dead ends: 222 [2023-12-02 18:52:24,651 INFO L226 Difference]: Without dead ends: 127 [2023-12-02 18:52:24,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:52:24,654 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:24,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 76 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:52:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-02 18:52:24,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-12-02 18:52:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 93 states have internal predecessors, (109), 21 states have call successors, (21), 17 states have call predecessors, (21), 17 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2023-12-02 18:52:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 155 transitions. [2023-12-02 18:52:24,678 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 155 transitions. Word has length 29 [2023-12-02 18:52:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:24,678 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 155 transitions. [2023-12-02 18:52:24,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:52:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 155 transitions. [2023-12-02 18:52:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 18:52:24,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:24,680 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:24,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:52:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:24,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:24,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:24,886 INFO L85 PathProgramCache]: Analyzing trace with hash -940110479, now seen corresponding path program 1 times [2023-12-02 18:52:24,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:24,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496119958] [2023-12-02 18:52:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:52:25,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496119958] [2023-12-02 18:52:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496119958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:52:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795265372] [2023-12-02 18:52:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:25,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:52:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:52:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:52:25,112 INFO L87 Difference]: Start difference. First operand 125 states and 155 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:52:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:25,507 INFO L93 Difference]: Finished difference Result 401 states and 496 transitions. [2023-12-02 18:52:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:52:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2023-12-02 18:52:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:25,511 INFO L225 Difference]: With dead ends: 401 [2023-12-02 18:52:25,512 INFO L226 Difference]: Without dead ends: 278 [2023-12-02 18:52:25,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 18:52:25,514 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 112 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:25,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 250 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:52:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-02 18:52:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 265. [2023-12-02 18:52:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 180 states have (on average 1.2166666666666666) internal successors, (219), 198 states have internal predecessors, (219), 45 states have call successors, (45), 37 states have call predecessors, (45), 39 states have return successors, (54), 42 states have call predecessors, (54), 45 states have call successors, (54) [2023-12-02 18:52:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 318 transitions. [2023-12-02 18:52:25,558 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 318 transitions. Word has length 30 [2023-12-02 18:52:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:25,559 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 318 transitions. [2023-12-02 18:52:25,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:52:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 318 transitions. [2023-12-02 18:52:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 18:52:25,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:25,561 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:25,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:52:25,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:25,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash -27505523, now seen corresponding path program 1 times [2023-12-02 18:52:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:25,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913618602] [2023-12-02 18:52:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:25,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:52:25,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913618602] [2023-12-02 18:52:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913618602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:52:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253028359] [2023-12-02 18:52:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:52:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:52:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:52:25,632 INFO L87 Difference]: Start difference. First operand 265 states and 318 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:52:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:25,769 INFO L93 Difference]: Finished difference Result 517 states and 622 transitions. [2023-12-02 18:52:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:52:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-12-02 18:52:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:25,774 INFO L225 Difference]: With dead ends: 517 [2023-12-02 18:52:25,774 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 18:52:25,775 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 18:52:25,776 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:25,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 153 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:52:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 18:52:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2023-12-02 18:52:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.196629213483146) internal successors, (213), 196 states have internal predecessors, (213), 45 states have call successors, (45), 37 states have call predecessors, (45), 39 states have return successors, (54), 42 states have call predecessors, (54), 45 states have call successors, (54) [2023-12-02 18:52:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 312 transitions. [2023-12-02 18:52:25,818 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 312 transitions. Word has length 30 [2023-12-02 18:52:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:25,819 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 312 transitions. [2023-12-02 18:52:25,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:52:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 312 transitions. [2023-12-02 18:52:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 18:52:25,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:25,822 INFO L195 NwaCegarLoop]: trace histogram [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 18:52:25,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:52:25,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:25,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash 530968553, now seen corresponding path program 1 times [2023-12-02 18:52:25,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:25,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934656705] [2023-12-02 18:52:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:25,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 18:52:26,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934656705] [2023-12-02 18:52:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934656705] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:52:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386001046] [2023-12-02 18:52:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:26,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:52:26,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:52:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:26,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:52:26,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:52:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 18:52:26,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:52:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 18:52:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386001046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:52:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297399953] [2023-12-02 18:52:26,319 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 18:52:26,319 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:52:26,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:52:26,328 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:52:26,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:52:30,229 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 133 for LOIs [2023-12-02 18:52:30,272 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-12-02 18:52:30,441 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 34 for LOIs [2023-12-02 18:52:30,447 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 29 for LOIs [2023-12-02 18:52:30,452 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:52:33,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3737#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= ~pumpRunning~0 2147483647) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2)) (= ~switchedOnBeforeTS~0 0))' at error location [2023-12-02 18:52:33,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:52:33,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:52:33,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2023-12-02 18:52:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387108897] [2023-12-02 18:52:33,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:52:33,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:52:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:33,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:52:33,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 18:52:33,487 INFO L87 Difference]: Start difference. First operand 263 states and 312 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 18:52:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:34,947 INFO L93 Difference]: Finished difference Result 994 states and 1233 transitions. [2023-12-02 18:52:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 18:52:34,948 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 52 [2023-12-02 18:52:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:34,951 INFO L225 Difference]: With dead ends: 994 [2023-12-02 18:52:34,951 INFO L226 Difference]: Without dead ends: 319 [2023-12-02 18:52:34,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=841, Invalid=7169, Unknown=0, NotChecked=0, Total=8010 [2023-12-02 18:52:34,958 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 604 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:34,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 452 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:52:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-02 18:52:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 280. [2023-12-02 18:52:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 188 states have (on average 1.175531914893617) internal successors, (221), 204 states have internal predecessors, (221), 51 states have call successors, (51), 43 states have call predecessors, (51), 40 states have return successors, (59), 42 states have call predecessors, (59), 51 states have call successors, (59) [2023-12-02 18:52:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 331 transitions. [2023-12-02 18:52:34,992 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 331 transitions. Word has length 52 [2023-12-02 18:52:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:34,992 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 331 transitions. [2023-12-02 18:52:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 18:52:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 331 transitions. [2023-12-02 18:52:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 18:52:34,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:34,994 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:35,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:52:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:35,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:35,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1537997472, now seen corresponding path program 1 times [2023-12-02 18:52:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703941671] [2023-12-02 18:52:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:52:35,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703941671] [2023-12-02 18:52:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703941671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:52:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746295222] [2023-12-02 18:52:35,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:52:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:52:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:52:35,378 INFO L87 Difference]: Start difference. First operand 280 states and 331 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 18:52:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:35,542 INFO L93 Difference]: Finished difference Result 560 states and 672 transitions. [2023-12-02 18:52:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:52:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 53 [2023-12-02 18:52:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:35,547 INFO L225 Difference]: With dead ends: 560 [2023-12-02 18:52:35,547 INFO L226 Difference]: Without dead ends: 296 [2023-12-02 18:52:35,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:52:35,549 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 78 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:35,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 97 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:52:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-02 18:52:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 280. [2023-12-02 18:52:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 188 states have (on average 1.1595744680851063) internal successors, (218), 204 states have internal predecessors, (218), 51 states have call successors, (51), 43 states have call predecessors, (51), 40 states have return successors, (59), 42 states have call predecessors, (59), 51 states have call successors, (59) [2023-12-02 18:52:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 328 transitions. [2023-12-02 18:52:35,581 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 328 transitions. Word has length 53 [2023-12-02 18:52:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:35,582 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 328 transitions. [2023-12-02 18:52:35,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 18:52:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 328 transitions. [2023-12-02 18:52:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 18:52:35,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:35,584 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:35,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:52:35,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:35,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash -85073720, now seen corresponding path program 1 times [2023-12-02 18:52:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274475357] [2023-12-02 18:52:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:52:35,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274475357] [2023-12-02 18:52:35,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274475357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:52:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906304279] [2023-12-02 18:52:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:35,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:35,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:35,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:52:35,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:52:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:36,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 18:52:36,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:52:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:52:36,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:52:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:52:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906304279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:52:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263674128] [2023-12-02 18:52:37,031 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 18:52:37,031 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:52:37,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:52:37,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:52:37,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:52:39,298 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 128 for LOIs [2023-12-02 18:52:39,333 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 29 for LOIs [2023-12-02 18:52:39,563 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 38 for LOIs [2023-12-02 18:52:39,570 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 28 for LOIs [2023-12-02 18:52:39,574 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:52:42,302 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7177#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (<= |timeShift_isHighWaterLevel_#res#1| 1) (<= 0 |timeShift_isHighWaterLevel_#res#1|) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= |timeShift_isHighWaterSensorDry_#res#1| 1) (<= 0 |timeShift_isHighWaterSensorDry_#res#1|) (= |old(~pumpRunning~0)| 0) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2)) (= ~switchedOnBeforeTS~0 0) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2023-12-02 18:52:42,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:52:42,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:52:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 29 [2023-12-02 18:52:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312171237] [2023-12-02 18:52:42,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:52:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 18:52:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 18:52:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2675, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 18:52:42,305 INFO L87 Difference]: Start difference. First operand 280 states and 328 transitions. Second operand has 29 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 28 states have internal predecessors, (102), 13 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (20), 10 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-02 18:52:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:42,783 INFO L93 Difference]: Finished difference Result 387 states and 463 transitions. [2023-12-02 18:52:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:52:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 28 states have internal predecessors, (102), 13 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (20), 10 states have call predecessors, (20), 13 states have call successors, (20) Word has length 58 [2023-12-02 18:52:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:42,784 INFO L225 Difference]: With dead ends: 387 [2023-12-02 18:52:42,784 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 18:52:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=662, Invalid=3894, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 18:52:42,788 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 161 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:42,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 198 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:52:42,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 18:52:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 18:52:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:52:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 18:52:42,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2023-12-02 18:52:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:42,789 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 18:52:42,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 28 states have internal predecessors, (102), 13 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (20), 10 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-02 18:52:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 18:52:42,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 18:52:42,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:52:42,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:52:42,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:52:42,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 18:52:45,675 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 337 343) no Hoare annotation was computed. [2023-12-02 18:52:45,675 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 337 343) the Hoare annotation is: true [2023-12-02 18:52:45,675 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 134 145) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 1))) (let ((.cse6 (= ~methaneLevelCritical~0 0)) (.cse7 (not .cse4)) (.cse9 (= ~pumpRunning~0 0)) (.cse10 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse5 (not .cse10)) (.cse8 (not .cse9)) (.cse2 (not (= 2 ~waterLevel~0))) (.cse0 (and .cse10 .cse7)) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not .cse6))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse1 .cse7) (or (not (= ~waterLevel~0 1)) .cse5 .cse8 .cse6 .cse1) (or .cse5 .cse8 .cse6 .cse1 .cse2) (or .cse0 .cse9 .cse1 .cse3 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse4))))) [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 134 145) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point L353(lines 353 361) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point L349(lines 349 366) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 91) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point L317-2(lines 313 335) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L895 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (let ((.cse8 (= ~pumpRunning~0 0))) (let ((.cse6 (= |old(~pumpRunning~0)| 0)) (.cse3 (not .cse8)) (.cse9 (= 1 ~systemActive~0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse7 (and .cse3 .cse9 .cse5)) (.cse0 (not .cse6)) (.cse1 (not .cse9))) (and (or .cse0 .cse1 .cse2) (let ((.cse4 (= ~methaneLevelCritical~0 0))) (or .cse1 (and .cse3 (or (not .cse4) (= ~pumpRunning~0 1)) .cse5) (and .cse4 (not (= |old(~pumpRunning~0)| 1))) .cse6)) (or .cse1 .cse7 .cse2) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse1 .cse7 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse8 (= ~waterLevel~0 1) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 1) (= ~switchedOnBeforeTS~0 0))))))) [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point L82-1(line 82) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L895 garLoopResultBuilder]: At program point L359(line 359) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse0 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse0 (and (= ~methaneLevelCritical~0 0) (not (= |old(~pumpRunning~0)| 1))) .cse1) (or (not .cse1) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= |timeShift_processEnvironment_~tmp~2#1| 0) (= ~waterLevel~0 1) (= ~switchedOnBeforeTS~0 0))) (or .cse0 (not (= |old(~waterLevel~0)| 2))))) [2023-12-02 18:52:45,676 INFO L899 garLoopResultBuilder]: For program point L950(line 950) no Hoare annotation was computed. [2023-12-02 18:52:45,676 INFO L895 garLoopResultBuilder]: At program point L364(line 364) the Hoare annotation is: (let ((.cse3 (not (= ~pumpRunning~0 0))) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse8 (= 1 ~systemActive~0)) (.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse6)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse1 (not .cse8)) (.cse7 (and .cse3 .cse8 .cse5))) (and (or .cse0 .cse1 .cse2) (let ((.cse4 (= ~methaneLevelCritical~0 0))) (or .cse1 (and .cse3 (or (not .cse4) (= ~pumpRunning~0 1)) .cse5) (and .cse4 (not (= |old(~pumpRunning~0)| 1))) .cse6)) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 .cse7 .cse2) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) .cse1 .cse7 (= |old(~switchedOnBeforeTS~0)| 0))))) [2023-12-02 18:52:45,677 INFO L899 garLoopResultBuilder]: For program point L364-1(lines 345 369) no Hoare annotation was computed. [2023-12-02 18:52:45,677 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 310 336) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0)) (.cse12 (= ~methaneLevelCritical~0 0)) (.cse13 (not (= |old(~pumpRunning~0)| 1))) (.cse4 (= ~switchedOnBeforeTS~0 0))) (let ((.cse3 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= ~pumpRunning~0 0)) (.cse9 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse4)) (.cse7 (and .cse12 .cse13)) (.cse11 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse1 (not .cse8)) (.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse2 .cse3) (or (= 2 ~waterLevel~0) .cse2 .cse3) (or .cse1 .cse6 .cse2 (and .cse5 (= ~waterLevel~0 1))) (or .cse2 .cse7 .cse8 (and (not .cse5) .cse9)) (or .cse0 .cse2 (and .cse10 .cse9 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse11) (or .cse2 (not .cse12) .cse13 (= ~pumpRunning~0 1)) (or .cse10 .cse2 .cse7 .cse8 .cse11) (or .cse0 .cse1 .cse6 .cse2 .cse4)))) [2023-12-02 18:52:45,677 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0)) (.cse12 (= ~methaneLevelCritical~0 0)) (.cse13 (not (= |old(~pumpRunning~0)| 1))) (.cse4 (= ~switchedOnBeforeTS~0 0))) (let ((.cse3 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= ~pumpRunning~0 0)) (.cse9 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse4)) (.cse7 (and .cse12 .cse13)) (.cse11 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse1 (not .cse8)) (.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse2 .cse3) (or (= 2 ~waterLevel~0) .cse2 .cse3) (or .cse1 .cse6 .cse2 (and .cse5 (= ~waterLevel~0 1))) (or .cse2 .cse7 .cse8 (and (not .cse5) .cse9)) (or .cse0 .cse2 (and .cse10 .cse9 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse11) (or .cse2 (not .cse12) .cse13 (= ~pumpRunning~0 1)) (or .cse10 .cse2 .cse7 .cse8 .cse11) (or .cse0 .cse1 .cse6 .cse2 .cse4)))) [2023-12-02 18:52:45,677 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2023-12-02 18:52:45,677 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 94) no Hoare annotation was computed. [2023-12-02 18:52:45,677 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 97) no Hoare annotation was computed. [2023-12-02 18:52:45,677 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 72 100) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 310 336) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 950) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L899 garLoopResultBuilder]: For program point L324-1(lines 324 330) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L899 garLoopResultBuilder]: For program point L225(line 225) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 204 233) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 222) no Hoare annotation was computed. [2023-12-02 18:52:45,678 INFO L902 garLoopResultBuilder]: At program point L218-1(lines 218 222) the Hoare annotation is: true [2023-12-02 18:52:45,678 INFO L902 garLoopResultBuilder]: At program point L214-2(lines 214 228) the Hoare annotation is: true [2023-12-02 18:52:45,678 INFO L902 garLoopResultBuilder]: At program point L210(line 210) the Hoare annotation is: true [2023-12-02 18:52:45,679 INFO L899 garLoopResultBuilder]: For program point L210-1(line 210) no Hoare annotation was computed. [2023-12-02 18:52:45,679 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 204 233) the Hoare annotation is: true [2023-12-02 18:52:45,679 INFO L899 garLoopResultBuilder]: For program point L229(lines 204 233) no Hoare annotation was computed. [2023-12-02 18:52:45,679 INFO L899 garLoopResultBuilder]: For program point L291-2(lines 291 298) no Hoare annotation was computed. [2023-12-02 18:52:45,679 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 516) no Hoare annotation was computed. [2023-12-02 18:52:45,679 INFO L899 garLoopResultBuilder]: For program point L510-1(lines 510 516) no Hoare annotation was computed. [2023-12-02 18:52:45,679 INFO L899 garLoopResultBuilder]: For program point L539(lines 480 543) no Hoare annotation was computed. [2023-12-02 18:52:45,679 INFO L895 garLoopResultBuilder]: At program point L502(line 502) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0)) (.cse5 (= 2 ~waterLevel~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse4 (= ~waterLevel~0 1)) (.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse3 .cse1 .cse2 .cse4 (= ~switchedOnBeforeTS~0 0)) (and .cse5 .cse1 (not .cse0) .cse2) (and (not .cse3) .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse3 (or (and .cse5 .cse2) (and .cse2 .cse4)) .cse0 .cse1))) [2023-12-02 18:52:45,680 INFO L895 garLoopResultBuilder]: At program point L536(lines 489 537) the Hoare annotation is: false [2023-12-02 18:52:45,680 INFO L899 garLoopResultBuilder]: For program point L491(lines 490 535) no Hoare annotation was computed. [2023-12-02 18:52:45,680 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 18:52:45,680 INFO L895 garLoopResultBuilder]: At program point L512(line 512) the Hoare annotation is: (let ((.cse4 (= ~waterLevel~0 1)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse5 (= 2 ~waterLevel~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse0 .cse2 .cse3 .cse4 (= ~switchedOnBeforeTS~0 0)) (and .cse5 .cse2 (not .cse1) .cse3) (and .cse0 .cse5 .cse2 .cse3) (and (not .cse0) .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2023-12-02 18:52:45,680 INFO L895 garLoopResultBuilder]: At program point L533(lines 490 535) the Hoare annotation is: (let ((.cse4 (= ~waterLevel~0 1)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse6 (= 2 ~waterLevel~0)) (.cse5 (= ~switchedOnBeforeTS~0 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse0 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 (not .cse1) .cse3) (and .cse0 .cse6 .cse2 .cse3 .cse5) (and (not .cse0) .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2023-12-02 18:52:45,680 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 506) no Hoare annotation was computed. [2023-12-02 18:52:45,680 INFO L899 garLoopResultBuilder]: For program point L500-1(lines 500 506) no Hoare annotation was computed. [2023-12-02 18:52:45,680 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 18:52:45,680 INFO L895 garLoopResultBuilder]: At program point L526-2(lines 520 531) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not .cse0) (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse1 .cse2) (and (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and (not (= ~switchedOnBeforeTS~0 0)) .cse1 .cse2 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2023-12-02 18:52:45,681 INFO L899 garLoopResultBuilder]: For program point L291(lines 291 298) no Hoare annotation was computed. [2023-12-02 18:52:45,681 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 122 133) no Hoare annotation was computed. [2023-12-02 18:52:45,681 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 122 133) the Hoare annotation is: (let ((.cse10 (= |old(~waterLevel~0)| 2)) (.cse9 (= |old(~waterLevel~0)| 1)) (.cse1 (= ~methaneLevelCritical~0 0))) (let ((.cse7 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (= ~waterLevel~0 1)) (.cse0 (= 2 ~waterLevel~0)) (.cse4 (not .cse1)) (.cse6 (not .cse9)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not .cse10))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse2 .cse4 (not (= ~pumpRunning~0 1)) .cse5) (or .cse6 .cse2 .cse7 .cse8) (or .cse2 .cse7 .cse5 (= ~switchedOnBeforeTS~0 0)) (or (and .cse9 .cse8) (and .cse0 .cse10) .cse4 (let ((.cse11 (not (= ~pumpRunning~0 0)))) (and (or .cse11 .cse6 .cse2) (or .cse11 .cse2 .cse3))))))) [2023-12-02 18:52:45,681 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 415 423) no Hoare annotation was computed. [2023-12-02 18:52:45,681 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 415 423) the Hoare annotation is: true [2023-12-02 18:52:45,684 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:45,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:52:45,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:52:45 BoogieIcfgContainer [2023-12-02 18:52:45,697 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:52:45,698 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:52:45,698 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:52:45,698 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:52:45,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:23" (3/4) ... [2023-12-02 18:52:45,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 18:52:45,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 18:52:45,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 18:52:45,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 18:52:45,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 18:52:45,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 18:52:45,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2023-12-02 18:52:45,712 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2023-12-02 18:52:45,713 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 18:52:45,713 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 18:52:45,714 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:52:45,715 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:52:45,825 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:52:45,826 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 18:52:45,826 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:52:45,827 INFO L158 Benchmark]: Toolchain (without parser) took 23585.75ms. Allocated memory was 136.3MB in the beginning and 549.5MB in the end (delta: 413.1MB). Free memory was 93.2MB in the beginning and 444.2MB in the end (delta: -351.0MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,828 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 136.3MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:52:45,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.57ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 73.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.88ms. Allocated memory is still 136.3MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,829 INFO L158 Benchmark]: Boogie Preprocessor took 30.95ms. Allocated memory is still 136.3MB. Free memory was 71.8MB in the beginning and 70.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,829 INFO L158 Benchmark]: RCFGBuilder took 497.81ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 70.1MB in the beginning and 130.4MB in the end (delta: -60.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,830 INFO L158 Benchmark]: TraceAbstraction took 22450.33ms. Allocated memory was 163.6MB in the beginning and 549.5MB in the end (delta: 385.9MB). Free memory was 129.4MB in the beginning and 451.5MB in the end (delta: -322.1MB). Peak memory consumption was 327.7MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,830 INFO L158 Benchmark]: Witness Printer took 128.50ms. Allocated memory is still 549.5MB. Free memory was 451.5MB in the beginning and 444.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 18:52:45,832 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 136.3MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.57ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 73.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.88ms. Allocated memory is still 136.3MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.95ms. Allocated memory is still 136.3MB. Free memory was 71.8MB in the beginning and 70.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.81ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 70.1MB in the beginning and 130.4MB in the end (delta: -60.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22450.33ms. Allocated memory was 163.6MB in the beginning and 549.5MB in the end (delta: 385.9MB). Free memory was 129.4MB in the beginning and 451.5MB in the end (delta: -322.1MB). Peak memory consumption was 327.7MB. Max. memory is 16.1GB. * Witness Printer took 128.50ms. Allocated memory is still 549.5MB. Free memory was 451.5MB in the beginning and 444.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [49] - GenericResultAtLocation [Line: 101]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [101] - GenericResultAtLocation [Line: 201]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [201] - GenericResultAtLocation [Line: 304]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [304] - GenericResultAtLocation [Line: 479]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [479] - GenericResultAtLocation [Line: 544]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [544] - GenericResultAtLocation [Line: 910]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [910] - GenericResultAtLocation [Line: 945]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [945] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 950]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1140 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1121 mSDsluCounter, 1521 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1068 mSDsCounter, 583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1616 IncrementalHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 583 mSolverCounterUnsat, 453 mSDtfsCounter, 1616 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 529 GetRequests, 320 SyntacticMatches, 8 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4207 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=8, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 85 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 686 PreInvPairs, 804 NumberOfFragments, 1172 HoareAnnotationTreeSize, 686 FomulaSimplifications, 4835 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 18 FomulaSimplificationsInter, 10367 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 485 NumberOfCodeBlocks, 485 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 1987 SizeOfPredicates, 15 NumberOfNonLiveVariables, 690 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 144/194 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 214]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 490]: Loop Invariant Derived loop invariant: ((((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (switchedOnBeforeTS == 0))) || ((((2 == waterLevel) && (1 == systemActive)) && !((methaneLevelCritical == 0))) && (splverifierCounter == 0))) || (((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0))) || (((!((pumpRunning == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == switchedOnBeforeTS))) - InvariantResult [Line: 489]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-12-02 18:52:45,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_083f06ff-875f-4b94-a28a-e24dfde2a867/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE