./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ --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 e4fc698cb41b54b4c4983dda7de32b2f9c78701d9e96fbbf9a36472a5bdbde25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:05:40,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:40,734 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:05:40,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:40,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:40,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:40,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:40,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:40,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:40,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:40,788 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:40,790 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:40,790 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:40,792 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:05:40,793 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:40,793 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:40,794 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:05:40,794 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:05:40,795 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:40,795 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:05:40,796 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:05:40,796 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:05:40,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:40,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:05:40,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:05:40,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:40,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:05:40,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:40,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:05:40,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:40,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:05:40,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:05:40,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:05:40,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:40,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:40,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:40,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:40,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:40,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:40,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:05:40,807 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:05:40,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:05:40,807 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:05:40,808 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:40,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:40,809 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_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fc698cb41b54b4c4983dda7de32b2f9c78701d9e96fbbf9a36472a5bdbde25 [2023-11-19 05:05:41,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:41,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:41,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:41,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:41,201 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:41,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2023-11-19 05:05:44,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:45,015 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:45,015 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2023-11-19 05:05:45,039 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/data/4f1d6e461/708a1383df48430cb182ac9949adfbec/FLAG876d15bb0 [2023-11-19 05:05:45,060 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/data/4f1d6e461/708a1383df48430cb182ac9949adfbec [2023-11-19 05:05:45,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:45,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:45,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:45,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:45,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:45,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b020f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45, skipping insertion in model container [2023-11-19 05:05:45,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:05:45,610 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_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c[18431,18444] [2023-11-19 05:05:45,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:45,632 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:05:45,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-19 05:05:45,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] [2023-11-19 05:05:45,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [388] [2023-11-19 05:05:45,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [458] [2023-11-19 05:05:45,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [824] [2023-11-19 05:05:45,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [923] [2023-11-19 05:05:45,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [958] [2023-11-19 05:05:45,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [967] [2023-11-19 05:05:45,724 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_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c[18431,18444] [2023-11-19 05:05:45,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:05:45,765 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:05:45,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45 WrapperNode [2023-11-19 05:05:45,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:45,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:45,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:05:45,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:05:45,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,866 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 210 [2023-11-19 05:05:45,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:05:45,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:05:45,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:05:45,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:05:45,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:05:45,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:05:45,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:05:45,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:05:45,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (1/1) ... [2023-11-19 05:05:45,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:45,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:45,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:05:45,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:05:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:05:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 05:05:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 05:05:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 05:05:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 05:05:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 05:05:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 05:05:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:05:46,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:05:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 05:05:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 05:05:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-11-19 05:05:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-11-19 05:05:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:05:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 05:05:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 05:05:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:05:46,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:05:46,109 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:05:46,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:05:46,592 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:05:46,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:05:46,735 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:05:46,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:46 BoogieIcfgContainer [2023-11-19 05:05:46,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:05:46,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:05:46,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:05:46,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:05:46,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:45" (1/3) ... [2023-11-19 05:05:46,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb73b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:46, skipping insertion in model container [2023-11-19 05:05:46,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:45" (2/3) ... [2023-11-19 05:05:46,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb73b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:46, skipping insertion in model container [2023-11-19 05:05:46,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:46" (3/3) ... [2023-11-19 05:05:46,765 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2023-11-19 05:05:46,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:05:46,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:05:46,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:05:46,872 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;@6685042c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:05:46,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:05:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:05:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:05:46,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:46,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:46,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:46,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2116430227, now seen corresponding path program 1 times [2023-11-19 05:05:46,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:46,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91734704] [2023-11-19 05:05:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:46,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:47,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:47,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91734704] [2023-11-19 05:05:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91734704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:47,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:47,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:05:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612255187] [2023-11-19 05:05:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:47,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:05:47,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:05:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:05:47,203 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:47,322 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2023-11-19 05:05:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:05:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:05:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:47,352 INFO L225 Difference]: With dead ends: 116 [2023-11-19 05:05:47,352 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 05:05:47,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:05:47,361 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:47,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 05:05:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 05:05:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:05:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2023-11-19 05:05:47,418 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2023-11-19 05:05:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:47,418 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2023-11-19 05:05:47,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2023-11-19 05:05:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:05:47,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:47,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:05:47,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:47,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash 19322041, now seen corresponding path program 1 times [2023-11-19 05:05:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:47,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854892509] [2023-11-19 05:05:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:47,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:47,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854892509] [2023-11-19 05:05:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854892509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810088706] [2023-11-19 05:05:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:47,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:47,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:47,545 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:47,602 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2023-11-19 05:05:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 05:05:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:47,604 INFO L225 Difference]: With dead ends: 80 [2023-11-19 05:05:47,605 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:05:47,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:47,608 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:47,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:05:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:05:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-19 05:05:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:05:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-11-19 05:05:47,623 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2023-11-19 05:05:47,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:47,623 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-11-19 05:05:47,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:47,624 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-11-19 05:05:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:05:47,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:47,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:47,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:05:47,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:47,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1018529592, now seen corresponding path program 1 times [2023-11-19 05:05:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125324008] [2023-11-19 05:05:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:47,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:47,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:47,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125324008] [2023-11-19 05:05:47,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125324008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:47,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:47,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:47,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753974409] [2023-11-19 05:05:47,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:47,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:47,740 INFO L87 Difference]: Start difference. First operand 46 states and 60 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:47,823 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2023-11-19 05:05:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:47,824 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 05:05:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:47,826 INFO L225 Difference]: With dead ends: 134 [2023-11-19 05:05:47,827 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 05:05:47,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:47,829 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:47,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 93 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 05:05:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2023-11-19 05:05:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 71 states have internal predecessors, (79), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 11 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 05:05:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2023-11-19 05:05:47,857 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 16 [2023-11-19 05:05:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:47,857 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2023-11-19 05:05:47,858 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2023-11-19 05:05:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:05:47,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:47,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:05:47,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:47,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:47,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1403710825, now seen corresponding path program 1 times [2023-11-19 05:05:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:47,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746455670] [2023-11-19 05:05:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:47,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:48,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746455670] [2023-11-19 05:05:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746455670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:05:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532868760] [2023-11-19 05:05:48,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:48,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:05:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:05:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:05:48,171 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:48,377 INFO L93 Difference]: Finished difference Result 289 states and 386 transitions. [2023-11-19 05:05:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:05:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 05:05:48,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:48,382 INFO L225 Difference]: With dead ends: 289 [2023-11-19 05:05:48,382 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 05:05:48,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:05:48,386 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 55 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:48,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 189 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:48,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 05:05:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 187. [2023-11-19 05:05:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 130 states have (on average 1.3307692307692307) internal successors, (173), 150 states have internal predecessors, (173), 29 states have call successors, (29), 23 states have call predecessors, (29), 27 states have return successors, (33), 26 states have call predecessors, (33), 29 states have call successors, (33) [2023-11-19 05:05:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 235 transitions. [2023-11-19 05:05:48,429 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 235 transitions. Word has length 19 [2023-11-19 05:05:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:48,430 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 235 transitions. [2023-11-19 05:05:48,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:05:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 235 transitions. [2023-11-19 05:05:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:05:48,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:48,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:48,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:05:48,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:48,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash -569042023, now seen corresponding path program 1 times [2023-11-19 05:05:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661049501] [2023-11-19 05:05:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:48,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:48,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661049501] [2023-11-19 05:05:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661049501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:48,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:05:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146442950] [2023-11-19 05:05:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:48,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:05:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:05:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:05:48,789 INFO L87 Difference]: Start difference. First operand 187 states and 235 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:05:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:49,379 INFO L93 Difference]: Finished difference Result 540 states and 710 transitions. [2023-11-19 05:05:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:05:49,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-19 05:05:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:49,397 INFO L225 Difference]: With dead ends: 540 [2023-11-19 05:05:49,397 INFO L226 Difference]: Without dead ends: 455 [2023-11-19 05:05:49,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:05:49,407 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 190 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:49,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 260 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:05:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-11-19 05:05:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 369. [2023-11-19 05:05:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 260 states have (on average 1.2846153846153847) internal successors, (334), 291 states have internal predecessors, (334), 52 states have call successors, (52), 46 states have call predecessors, (52), 56 states have return successors, (64), 55 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-19 05:05:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 450 transitions. [2023-11-19 05:05:49,510 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 450 transitions. Word has length 22 [2023-11-19 05:05:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:49,510 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 450 transitions. [2023-11-19 05:05:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:05:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 450 transitions. [2023-11-19 05:05:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 05:05:49,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:49,517 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 05:05:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:05:49,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:49,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1053580352, now seen corresponding path program 1 times [2023-11-19 05:05:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030097497] [2023-11-19 05:05:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:49,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:49,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030097497] [2023-11-19 05:05:49,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030097497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:49,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:49,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:05:49,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926047202] [2023-11-19 05:05:49,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:49,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:05:49,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:05:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:49,584 INFO L87 Difference]: Start difference. First operand 369 states and 450 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:05:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:49,767 INFO L93 Difference]: Finished difference Result 653 states and 802 transitions. [2023-11-19 05:05:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:05:49,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2023-11-19 05:05:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:49,771 INFO L225 Difference]: With dead ends: 653 [2023-11-19 05:05:49,771 INFO L226 Difference]: Without dead ends: 286 [2023-11-19 05:05:49,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:49,774 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 82 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:49,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 108 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-19 05:05:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 277. [2023-11-19 05:05:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 198 states have (on average 1.2777777777777777) internal successors, (253), 222 states have internal predecessors, (253), 38 states have call successors, (38), 35 states have call predecessors, (38), 40 states have return successors, (44), 39 states have call predecessors, (44), 38 states have call successors, (44) [2023-11-19 05:05:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 335 transitions. [2023-11-19 05:05:49,818 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 335 transitions. Word has length 42 [2023-11-19 05:05:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:49,819 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 335 transitions. [2023-11-19 05:05:49,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:05:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 335 transitions. [2023-11-19 05:05:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 05:05:49,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:49,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:05:49,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:49,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -549778108, now seen corresponding path program 1 times [2023-11-19 05:05:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916537884] [2023-11-19 05:05:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:50,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:50,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916537884] [2023-11-19 05:05:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916537884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 05:05:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155468468] [2023-11-19 05:05:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:05:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:05:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:05:50,198 INFO L87 Difference]: Start difference. First operand 277 states and 335 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:05:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:50,578 INFO L93 Difference]: Finished difference Result 421 states and 524 transitions. [2023-11-19 05:05:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:05:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2023-11-19 05:05:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:50,582 INFO L225 Difference]: With dead ends: 421 [2023-11-19 05:05:50,583 INFO L226 Difference]: Without dead ends: 275 [2023-11-19 05:05:50,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:05:50,585 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 108 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:50,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 170 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:05:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-19 05:05:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 220. [2023-11-19 05:05:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 156 states have (on average 1.294871794871795) internal successors, (202), 176 states have internal predecessors, (202), 31 states have call successors, (31), 28 states have call predecessors, (31), 32 states have return successors, (36), 31 states have call predecessors, (36), 31 states have call successors, (36) [2023-11-19 05:05:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 269 transitions. [2023-11-19 05:05:50,625 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 269 transitions. Word has length 44 [2023-11-19 05:05:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:50,626 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 269 transitions. [2023-11-19 05:05:50,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:05:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 269 transitions. [2023-11-19 05:05:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 05:05:50,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:50,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:05:50,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:05:50,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -853947774, now seen corresponding path program 1 times [2023-11-19 05:05:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403345629] [2023-11-19 05:05:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:51,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:51,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403345629] [2023-11-19 05:05:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403345629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:51,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460319540] [2023-11-19 05:05:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:51,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:51,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:51,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:51,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:05:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:51,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 05:05:51,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:05:51,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:05:52,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460319540] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:05:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570085695] [2023-11-19 05:05:52,414 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-11-19 05:05:52,415 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:05:52,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:05:52,425 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:05:52,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:06:00,292 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 24 for LOIs [2023-11-19 05:06:00,301 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 168 for LOIs [2023-11-19 05:06:03,979 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 164 for LOIs [2023-11-19 05:06:05,188 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 61 for LOIs [2023-11-19 05:06:05,211 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:06:22,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5006#(and (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~9#1| 0) (<= 0 ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= ~waterLevel~0 0))' at error location [2023-11-19 05:06:22,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:06:22,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:06:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 28 [2023-11-19 05:06:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594601361] [2023-11-19 05:06:22,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:06:22,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 05:06:22,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:22,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 05:06:22,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2637, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 05:06:22,822 INFO L87 Difference]: Start difference. First operand 220 states and 269 transitions. Second operand has 28 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 10 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-19 05:06:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:28,097 INFO L93 Difference]: Finished difference Result 1088 states and 1430 transitions. [2023-11-19 05:06:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-19 05:06:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 10 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) Word has length 47 [2023-11-19 05:06:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:28,109 INFO L225 Difference]: With dead ends: 1088 [2023-11-19 05:06:28,114 INFO L226 Difference]: Without dead ends: 919 [2023-11-19 05:06:28,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6929 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=2658, Invalid=16248, Unknown=0, NotChecked=0, Total=18906 [2023-11-19 05:06:28,134 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1356 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:28,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 796 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 05:06:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-11-19 05:06:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 629. [2023-11-19 05:06:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 449 states have (on average 1.2739420935412027) internal successors, (572), 496 states have internal predecessors, (572), 84 states have call successors, (84), 77 states have call predecessors, (84), 95 states have return successors, (114), 91 states have call predecessors, (114), 84 states have call successors, (114) [2023-11-19 05:06:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 770 transitions. [2023-11-19 05:06:28,243 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 770 transitions. Word has length 47 [2023-11-19 05:06:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:28,244 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 770 transitions. [2023-11-19 05:06:28,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 10 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-19 05:06:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 770 transitions. [2023-11-19 05:06:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 05:06:28,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:28,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:28,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:06:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:28,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:28,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash 274961809, now seen corresponding path program 1 times [2023-11-19 05:06:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811658704] [2023-11-19 05:06:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:06:29,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811658704] [2023-11-19 05:06:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811658704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:06:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985221246] [2023-11-19 05:06:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:29,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:29,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:29,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:06:29,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdc435db-e3d7-4b7e-b9b9-fbad0b8cf59e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:06:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:29,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 05:06:29,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:06:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:06:30,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:06:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:06:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985221246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:06:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612326419] [2023-11-19 05:06:30,655 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-19 05:06:30,655 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:06:30,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:06:30,658 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:06:30,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs