./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje --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 b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:09:20,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:09:20,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:09:20,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:09:20,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:09:20,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:09:20,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:09:20,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:09:20,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:09:20,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:09:20,354 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:09:20,354 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:09:20,355 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:09:20,355 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:09:20,356 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:09:20,356 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:09:20,357 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:09:20,357 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:09:20,357 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:09:20,358 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:09:20,358 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:09:20,363 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:09:20,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:09:20,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:09:20,364 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:09:20,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:09:20,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:09:20,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:09:20,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:09:20,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:09:20,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:09:20,370 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:09:20,370 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:09:20,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:09:20,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:09:20,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:09:20,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:09:20,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:09:20,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:09:20,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:09:20,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:09:20,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:09:20,375 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:09:20,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:09:20,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:09:20,376 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:09:20,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:09:20,377 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_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff [2024-11-09 07:09:20,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:09:20,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:09:20,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:09:20,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:09:20,785 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:09:20,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-sets/test_add-2.i Unable to find full path for "g++" [2024-11-09 07:09:23,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:09:23,727 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:09:23,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i [2024-11-09 07:09:23,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data/8a06c2ac1/fc6845aac8304e04be561f8117859160/FLAGfe73ed6e9 [2024-11-09 07:09:23,778 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data/8a06c2ac1/fc6845aac8304e04be561f8117859160 [2024-11-09 07:09:23,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:09:23,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:09:23,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:09:23,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:09:23,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:09:23,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:09:23" (1/1) ... [2024-11-09 07:09:23,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d47a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:23, skipping insertion in model container [2024-11-09 07:09:23,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:09:23" (1/1) ... [2024-11-09 07:09:23,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:09:24,366 WARN L250 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_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2024-11-09 07:09:24,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:09:24,394 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:09:24,484 WARN L250 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_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2024-11-09 07:09:24,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:09:24,532 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:09:24,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24 WrapperNode [2024-11-09 07:09:24,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:09:24,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:09:24,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:09:24,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:09:24,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,629 INFO L138 Inliner]: procedures = 135, calls = 46, calls flagged for inlining = 11, calls inlined = 7, statements flattened = 56 [2024-11-09 07:09:24,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:09:24,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:09:24,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:09:24,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:09:24,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:09:24,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:09:24,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:09:24,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:09:24,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (1/1) ... [2024-11-09 07:09:24,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:09:24,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:24,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:09:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:09:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:09:24,803 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-09 07:09:24,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-09 07:09:24,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:09:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:09:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:09:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:09:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-09 07:09:24,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-09 07:09:24,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:09:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:09:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:09:24,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:09:24,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:09:25,038 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:09:25,042 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:09:25,288 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-09 07:09:25,289 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:09:25,427 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:09:25,427 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:09:25,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:09:25 BoogieIcfgContainer [2024-11-09 07:09:25,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:09:25,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:09:25,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:09:25,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:09:25,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:09:23" (1/3) ... [2024-11-09 07:09:25,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fbd45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:09:25, skipping insertion in model container [2024-11-09 07:09:25,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:09:24" (2/3) ... [2024-11-09 07:09:25,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fbd45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:09:25, skipping insertion in model container [2024-11-09 07:09:25,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:09:25" (3/3) ... [2024-11-09 07:09:25,446 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add-2.i [2024-11-09 07:09:25,474 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:09:25,474 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:09:25,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:09:25,555 INFO L333 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, 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;@3e8f3d2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:09:25,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:09:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:09:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:09:25,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:25,575 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:25,576 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:25,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1343860729, now seen corresponding path program 1 times [2024-11-09 07:09:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906399376] [2024-11-09 07:09:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:25,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:09:26,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906399376] [2024-11-09 07:09:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906399376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465132646] [2024-11-09 07:09:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:26,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:26,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:26,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:26,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:09:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:26,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:09:26,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:26,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:09:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465132646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:26,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:09:26,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-09 07:09:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844558383] [2024-11-09 07:09:26,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:26,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:09:26,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:09:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:09:26,250 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:09:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:26,348 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-09 07:09:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:09:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-09 07:09:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:26,362 INFO L225 Difference]: With dead ends: 42 [2024-11-09 07:09:26,363 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 07:09:26,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:09:26,371 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:26,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:09:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 07:09:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 07:09:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 07:09:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-09 07:09:26,413 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 19 [2024-11-09 07:09:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:26,414 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-09 07:09:26,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:09:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-09 07:09:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 07:09:26,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:26,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:26,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:09:26,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 07:09:26,618 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:26,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1062351897, now seen corresponding path program 1 times [2024-11-09 07:09:26,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:26,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564108450] [2024-11-09 07:09:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:09:27,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564108450] [2024-11-09 07:09:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564108450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414505290] [2024-11-09 07:09:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:27,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:27,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:09:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:27,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:09:27,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:27,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:09:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414505290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:27,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:09:27,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 07:09:27,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611768335] [2024-11-09 07:09:27,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:27,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:09:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:09:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:09:27,895 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:09:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:28,113 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2024-11-09 07:09:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:09:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-09 07:09:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:28,118 INFO L225 Difference]: With dead ends: 63 [2024-11-09 07:09:28,118 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 07:09:28,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:09:28,121 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:28,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 75 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:09:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 07:09:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-09 07:09:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:09:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 07:09:28,133 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2024-11-09 07:09:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:28,133 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 07:09:28,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:09:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 07:09:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 07:09:28,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:28,135 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:28,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:28,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:28,338 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:28,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1015002137, now seen corresponding path program 1 times [2024-11-09 07:09:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890886395] [2024-11-09 07:09:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:09:29,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890886395] [2024-11-09 07:09:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890886395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:09:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:09:29,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931330775] [2024-11-09 07:09:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:29,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:09:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:09:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:09:29,023 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:09:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:29,293 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-09 07:09:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:09:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2024-11-09 07:09:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:29,297 INFO L225 Difference]: With dead ends: 38 [2024-11-09 07:09:29,297 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 07:09:29,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:09:29,300 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:29,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 74 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:09:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 07:09:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-09 07:09:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:09:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-09 07:09:29,316 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2024-11-09 07:09:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:29,318 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-09 07:09:29,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:09:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-09 07:09:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 07:09:29,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:29,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:29,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:09:29,322 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:29,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash 721151709, now seen corresponding path program 1 times [2024-11-09 07:09:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238355982] [2024-11-09 07:09:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:09:29,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:29,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238355982] [2024-11-09 07:09:29,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238355982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:29,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:09:29,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:09:29,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499225266] [2024-11-09 07:09:29,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:29,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:09:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:09:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:09:29,477 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:09:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:29,554 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-09 07:09:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:09:29,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-09 07:09:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:29,557 INFO L225 Difference]: With dead ends: 34 [2024-11-09 07:09:29,557 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 07:09:29,557 INFO L431 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 [2024-11-09 07:09:29,559 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:29,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:09:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 07:09:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 07:09:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:09:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-09 07:09:29,578 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2024-11-09 07:09:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:29,579 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-09 07:09:29,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:09:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-09 07:09:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:09:29,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:29,583 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:29,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:09:29,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:09:29,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 389393338, now seen corresponding path program 1 times [2024-11-09 07:09:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808067412] [2024-11-09 07:09:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:09:31,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808067412] [2024-11-09 07:09:31,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808067412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525969107] [2024-11-09 07:09:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:31,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:31,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:31,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:09:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:31,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-09 07:09:31,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:31,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:09:32,022 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 07:09:32,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 07:09:32,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2024-11-09 07:09:32,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 62 [2024-11-09 07:09:32,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 84 [2024-11-09 07:09:32,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-09 07:09:32,431 INFO L349 Elim1Store]: treesize reduction 45, result has 22.4 percent of original size [2024-11-09 07:09:32,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 28 [2024-11-09 07:09:32,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:09:32,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-09 07:09:32,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:09:32,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:09:32,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 07:09:32,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2024-11-09 07:09:32,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 56 [2024-11-09 07:09:32,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2024-11-09 07:09:32,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-09 07:09:32,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-09 07:09:32,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2024-11-09 07:09:32,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-11-09 07:09:32,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-09 07:09:32,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2024-11-09 07:09:32,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2024-11-09 07:09:32,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2024-11-09 07:09:33,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-09 07:09:33,710 INFO L349 Elim1Store]: treesize reduction 77, result has 1.3 percent of original size [2024-11-09 07:09:33,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 335 treesize of output 340 [2024-11-09 07:09:33,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 279 [2024-11-09 07:09:34,216 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2024-11-09 07:09:34,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 15 [2024-11-09 07:09:34,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2024-11-09 07:09:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:38,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:42,356 INFO L349 Elim1Store]: treesize reduction 1927, result has 40.8 percent of original size [2024-11-09 07:09:42,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 24 case distinctions, treesize of input 17762 treesize of output 11543 [2024-11-09 07:09:43,238 INFO L349 Elim1Store]: treesize reduction 19, result has 64.8 percent of original size [2024-11-09 07:09:43,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60663 treesize of output 49657 [2024-11-09 07:09:45,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:09:45,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 29391 treesize of output 28078 [2024-11-09 07:09:48,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:09:48,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27479 treesize of output 26861 [2024-11-09 07:09:50,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25873 treesize of output 25109 [2024-11-09 07:09:53,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:09:53,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 12247 treesize of output 12182 [2024-11-09 07:09:54,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24293 treesize of output 24135 [2024-11-09 07:13:44,019 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 07:13:44,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-09 07:13:44,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 07:13:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1555339023] [2024-11-09 07:13:44,052 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 07:13:44,052 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:13:44,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:13:44,067 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:13:44,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:13:44,117 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-09 07:13:44,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-09 07:13:44,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099746267] [2024-11-09 07:13:44,123 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:13:44,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:13:44,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:13:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=615, Unknown=10, NotChecked=0, Total=702 [2024-11-09 07:13:44,128 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:44,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=77, Invalid=615, Unknown=10, NotChecked=0, Total=702 [2024-11-09 07:13:44,131 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:44,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:13:44,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:13:44,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:44,335 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 07:13:44,339 INFO L158 Benchmark]: Toolchain (without parser) took 260555.26ms. Allocated memory was 125.8MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 69.3MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 465.5MB. Max. memory is 16.1GB. [2024-11-09 07:13:44,340 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:13:44,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.16ms. Allocated memory is still 125.8MB. Free memory was 69.1MB in the beginning and 47.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 07:13:44,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.95ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 47.2MB in the beginning and 135.5MB in the end (delta: -88.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-11-09 07:13:44,341 INFO L158 Benchmark]: Boogie Preprocessor took 73.01ms. Allocated memory is still 167.8MB. Free memory was 135.5MB in the beginning and 135.3MB in the end (delta: 138.4kB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-11-09 07:13:44,341 INFO L158 Benchmark]: RCFGBuilder took 723.66ms. Allocated memory is still 167.8MB. Free memory was 135.3MB in the beginning and 116.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 07:13:44,341 INFO L158 Benchmark]: TraceAbstraction took 258903.64ms. Allocated memory was 167.8MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 115.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 467.4MB. Max. memory is 16.1GB. [2024-11-09 07:13:44,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.16ms. Allocated memory is still 125.8MB. Free memory was 69.1MB in the beginning and 47.2MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.95ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 47.2MB in the beginning and 135.5MB in the end (delta: -88.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.01ms. Allocated memory is still 167.8MB. Free memory was 135.5MB in the beginning and 135.3MB in the end (delta: 138.4kB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * RCFGBuilder took 723.66ms. Allocated memory is still 167.8MB. Free memory was 135.3MB in the beginning and 116.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 258903.64ms. Allocated memory was 167.8MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 115.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 467.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje --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 b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:13:47,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:13:47,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 07:13:47,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:13:47,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:13:47,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:13:47,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:13:47,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:13:47,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:13:47,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:13:47,416 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:13:47,417 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:13:47,417 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:13:47,418 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:13:47,418 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:13:47,421 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:13:47,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:13:47,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:13:47,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:13:47,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:13:47,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:13:47,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:13:47,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:13:47,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:13:47,430 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:13:47,431 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 07:13:47,431 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:13:47,431 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 07:13:47,432 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:13:47,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:13:47,433 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:13:47,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:13:47,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:13:47,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:13:47,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:13:47,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:13:47,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:13:47,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:13:47,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:13:47,435 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 07:13:47,436 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 07:13:47,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:13:47,439 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:13:47,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff [2024-11-09 07:13:47,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:13:47,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:13:47,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:13:47,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:13:47,984 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:13:47,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-sets/test_add-2.i Unable to find full path for "g++" [2024-11-09 07:13:50,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:13:50,943 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:13:50,944 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i [2024-11-09 07:13:50,966 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data/82ca1522b/5aad82355500459a883bce32bc0923fb/FLAG7eb3415f9 [2024-11-09 07:13:51,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/data/82ca1522b/5aad82355500459a883bce32bc0923fb [2024-11-09 07:13:51,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:13:51,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:13:51,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:13:51,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:13:51,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:13:51,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:13:51" (1/1) ... [2024-11-09 07:13:51,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20eeb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:51, skipping insertion in model container [2024-11-09 07:13:51,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:13:51" (1/1) ... [2024-11-09 07:13:51,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:13:51,847 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:13:51,877 WARN L250 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_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2024-11-09 07:13:51,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:51,904 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 07:13:51,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:13:51,961 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:13:51,977 WARN L250 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_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2024-11-09 07:13:51,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:51,987 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:13:52,064 WARN L250 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_dd963c99-e066-4029-b1d7-16c44ae14bab/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2024-11-09 07:13:52,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:13:52,123 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:13:52,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52 WrapperNode [2024-11-09 07:13:52,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:13:52,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:13:52,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:13:52,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:13:52,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,206 INFO L138 Inliner]: procedures = 138, calls = 46, calls flagged for inlining = 11, calls inlined = 7, statements flattened = 54 [2024-11-09 07:13:52,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:13:52,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:13:52,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:13:52,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:13:52,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:13:52,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:13:52,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:13:52,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:13:52,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (1/1) ... [2024-11-09 07:13:52,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:13:52,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:52,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:13:52,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:13:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 07:13:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-09 07:13:52,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-09 07:13:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:13:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:13:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:13:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-09 07:13:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-09 07:13:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:13:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 07:13:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:13:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 07:13:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:13:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:13:52,578 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:13:52,581 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:13:52,982 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-09 07:13:52,982 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:13:53,000 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:13:53,003 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:13:53,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:53 BoogieIcfgContainer [2024-11-09 07:13:53,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:13:53,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:13:53,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:13:53,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:13:53,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:13:51" (1/3) ... [2024-11-09 07:13:53,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21819089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:13:53, skipping insertion in model container [2024-11-09 07:13:53,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:13:52" (2/3) ... [2024-11-09 07:13:53,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21819089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:13:53, skipping insertion in model container [2024-11-09 07:13:53,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:13:53" (3/3) ... [2024-11-09 07:13:53,020 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add-2.i [2024-11-09 07:13:53,042 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:13:53,042 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:13:53,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:13:53,141 INFO L333 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, 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;@680f129c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:13:53,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:13:53,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:13:53,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:53,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:53,162 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:13:53,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 890986472, now seen corresponding path program 1 times [2024-11-09 07:13:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:13:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393633726] [2024-11-09 07:13:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:53,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:13:53,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:13:53,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 07:13:53,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 07:13:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:53,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:13:53,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:53,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:53,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:13:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393633726] [2024-11-09 07:13:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393633726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:13:53,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654759592] [2024-11-09 07:13:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:53,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:13:53,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:13:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:13:53,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:13:53,588 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:53,653 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-09 07:13:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:13:53,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-09 07:13:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:53,670 INFO L225 Difference]: With dead ends: 56 [2024-11-09 07:13:53,670 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 07:13:53,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:13:53,681 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:53,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:13:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 07:13:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 07:13:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 07:13:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-09 07:13:53,747 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2024-11-09 07:13:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:53,748 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-09 07:13:53,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-09 07:13:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:13:53,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:53,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:53,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:13:53,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:13:53,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:13:53,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1880343670, now seen corresponding path program 1 times [2024-11-09 07:13:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:13:53,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624848324] [2024-11-09 07:13:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:53,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:13:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:13:53,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 07:13:53,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 07:13:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:54,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 07:13:54,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:54,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:54,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:13:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624848324] [2024-11-09 07:13:54,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624848324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:54,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:13:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345162496] [2024-11-09 07:13:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:54,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:13:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:13:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:13:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:54,855 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:55,595 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2024-11-09 07:13:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:13:55,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-09 07:13:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:55,597 INFO L225 Difference]: With dead ends: 69 [2024-11-09 07:13:55,598 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 07:13:55,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:13:55,600 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:55,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 62 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:13:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 07:13:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-09 07:13:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:13:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-09 07:13:55,612 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 19 [2024-11-09 07:13:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:55,612 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-09 07:13:55,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:13:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-09 07:13:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:13:55,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:55,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:55,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 07:13:55,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:13:55,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:13:55,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1516839212, now seen corresponding path program 1 times [2024-11-09 07:13:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:13:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180627126] [2024-11-09 07:13:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:55,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:13:55,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:13:55,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 07:13:55,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 07:13:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:56,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 07:13:56,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:56,266 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:13:56,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 07:13:57,037 INFO L349 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2024-11-09 07:13:57,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 236 [2024-11-09 07:13:57,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:13:57,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:13:57,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:13:57,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:13:57,478 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:13:57,497 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:13:57,502 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:13:57,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 60 [2024-11-09 07:13:57,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:13:57,816 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:13:57,834 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:13:57,882 INFO L349 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2024-11-09 07:13:57,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 109 [2024-11-09 07:13:58,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:13:58,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:13:58,453 INFO L349 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2024-11-09 07:13:58,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 136 treesize of output 118 [2024-11-09 07:13:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:13:59,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:00,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:14:00,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 992 treesize of output 979 [2024-11-09 07:14:00,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 606 [2024-11-09 07:14:00,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 570 treesize of output 554 [2024-11-09 07:14:00,898 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:00,900 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:00,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:00,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2024-11-09 07:14:00,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:01,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:14:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180627126] [2024-11-09 07:14:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180627126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2124111961] [2024-11-09 07:14:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:01,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:14:01,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:14:01,299 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:14:01,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-09 07:14:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:01,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:14:01,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:02,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2024-11-09 07:14:02,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:14:02,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-09 07:14:02,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 39 [2024-11-09 07:14:02,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:02,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 21 [2024-11-09 07:14:02,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:14:02,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 07:14:02,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:02,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-09 07:14:02,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:14:02,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 44 [2024-11-09 07:14:02,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:02,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2024-11-09 07:14:02,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:14:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:14:03,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:14:03,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2124111961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:03,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:14:03,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2024-11-09 07:14:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150658130] [2024-11-09 07:14:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:03,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:14:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:14:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:14:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-09 07:14:03,112 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:14:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:03,768 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-09 07:14:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:14:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2024-11-09 07:14:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:03,771 INFO L225 Difference]: With dead ends: 41 [2024-11-09 07:14:03,773 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 07:14:03,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:14:03,776 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:03,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 114 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:14:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 07:14:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-09 07:14:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:14:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-11-09 07:14:03,787 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2024-11-09 07:14:03,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:03,787 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-11-09 07:14:03,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:14:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-11-09 07:14:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:14:03,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:03,791 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:14:03,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-09 07:14:03,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-09 07:14:04,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:14:04,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:14:04,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1630008652, now seen corresponding path program 1 times [2024-11-09 07:14:04,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:14:04,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7477089] [2024-11-09 07:14:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:04,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:14:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:14:04,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 07:14:04,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 07:14:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:04,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:14:04,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:14:04,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:14:04,410 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:14:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7477089] [2024-11-09 07:14:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7477089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:04,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:14:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91576692] [2024-11-09 07:14:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:04,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:14:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:14:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:14:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:14:04,413 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:14:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:04,429 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-09 07:14:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:14:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-09 07:14:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:04,431 INFO L225 Difference]: With dead ends: 37 [2024-11-09 07:14:04,431 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 07:14:04,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:14:04,433 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:04,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:14:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 07:14:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 07:14:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 07:14:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-09 07:14:04,443 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-11-09 07:14:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:04,444 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-09 07:14:04,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:14:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-09 07:14:04,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 07:14:04,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:04,445 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:14:04,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-09 07:14:04,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:14:04,647 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:14:04,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2018921655, now seen corresponding path program 1 times [2024-11-09 07:14:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:14:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809094990] [2024-11-09 07:14:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:04,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:14:04,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:14:04,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 07:14:04,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd963c99-e066-4029-b1d7-16c44ae14bab/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 07:14:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:04,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-09 07:14:04,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:05,218 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:14:05,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 07:14:05,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:05,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 07:14:05,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-09 07:14:06,764 INFO L349 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2024-11-09 07:14:06,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 236 [2024-11-09 07:14:06,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:14:06,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:14:07,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:14:07,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 07:14:07,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-09 07:14:07,359 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:07,374 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:07,422 INFO L349 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2024-11-09 07:14:07,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 102 [2024-11-09 07:14:07,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:14:07,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:14:07,779 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:07,816 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:07,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2024-11-09 07:14:07,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:14:08,343 INFO L349 Elim1Store]: treesize reduction 47, result has 26.6 percent of original size [2024-11-09 07:14:08,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 49 [2024-11-09 07:14:08,698 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-11-09 07:14:08,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 70 [2024-11-09 07:14:08,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2024-11-09 07:14:08,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 50 [2024-11-09 07:14:14,235 WARN L286 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 21 DAG size of output: 12 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 07:14:14,236 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2024-11-09 07:14:14,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2024-11-09 07:14:14,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 39 [2024-11-09 07:14:19,863 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 43 DAG size of output: 18 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 07:14:19,864 INFO L349 Elim1Store]: treesize reduction 78, result has 25.0 percent of original size [2024-11-09 07:14:19,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2024-11-09 07:14:19,946 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:19,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 52 [2024-11-09 07:14:19,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2024-11-09 07:14:20,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 52 [2024-11-09 07:14:20,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 55 [2024-11-09 07:14:20,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2024-11-09 07:14:20,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-09 07:14:20,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-11-09 07:14:20,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 55 [2024-11-09 07:14:20,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 07:14:20,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2024-11-09 07:14:20,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2024-11-09 07:14:20,542 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:14:20,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 50 [2024-11-09 07:14:20,603 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-09 07:14:20,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-09 07:14:20,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 52 [2024-11-09 07:14:20,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2024-11-09 07:14:25,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 07:14:28,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 123 [2024-11-09 07:15:02,658 WARN L286 SmtUtils]: Spent 33.17s on a formula simplification. DAG size of input: 108 DAG size of output: 42 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 07:15:02,659 INFO L349 Elim1Store]: treesize reduction 614, result has 13.8 percent of original size [2024-11-09 07:15:02,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 583 treesize of output 729 [2024-11-09 07:15:03,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 67 [2024-11-09 07:15:04,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 67 [2024-11-09 07:15:07,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1032 treesize of output 936 [2024-11-09 07:15:09,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 490 treesize of output 366 [2024-11-09 07:15:10,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1828 treesize of output 1716 [2024-11-09 07:15:13,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 60 [2024-11-09 07:15:15,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 63