./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/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_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/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_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:05:03,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:05:03,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:05:03,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:05:03,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:05:03,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:05:03,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:05:03,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:05:03,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:05:03,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:05:03,724 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:05:03,725 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:05:03,725 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:05:03,726 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:05:03,726 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:05:03,726 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:05:03,730 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:05:03,732 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:05:03,733 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:05:03,733 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:05:03,733 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:05:03,734 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:05:03,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:05:03,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:05:03,735 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:05:03,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:05:03,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:05:03,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:05:03,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:05:03,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:05:03,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:05:03,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:05:03,750 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:05:03,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:05:03,751 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:05:03,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:05:03,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:05:03,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:05:03,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:05:03,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:05:03,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:05:03,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:05:03,754 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:05:03,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:05:03,754 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:05:03,755 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:05:03,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:05:03,755 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_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-09 07:05:04,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:05:04,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:05:04,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:05:04,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:05:04,092 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:05:04,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i Unable to find full path for "g++" [2024-11-09 07:05:06,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:05:06,478 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:05:06,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i [2024-11-09 07:05:06,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/data/72eca6885/e6df2bb9a66e426c8b7989c8da874c55/FLAG207905125 [2024-11-09 07:05:06,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/data/72eca6885/e6df2bb9a66e426c8b7989c8da874c55 [2024-11-09 07:05:06,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:05:06,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:05:06,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:05:06,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:05:06,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:05:06,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:05:06" (1/1) ... [2024-11-09 07:05:06,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5544c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:06, skipping insertion in model container [2024-11-09 07:05:06,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:05:06" (1/1) ... [2024-11-09 07:05:06,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:05:07,047 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_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i[33519,33532] [2024-11-09 07:05:07,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:05:07,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:05:07,255 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_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-1.i[33519,33532] [2024-11-09 07:05:07,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:05:07,386 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:05:07,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07 WrapperNode [2024-11-09 07:05:07,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:05:07,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:05:07,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:05:07,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:05:07,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,547 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1396 [2024-11-09 07:05:07,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:05:07,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:05:07,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:05:07,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:05:07,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,640 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:05:07,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:05:07,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:05:07,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:05:07,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (1/1) ... [2024-11-09 07:05:07,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:05:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:05:07,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:05:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:05:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:05:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:05:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:05:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:05:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 07:05:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:05:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:05:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:05:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:05:08,108 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:05:08,112 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:05:09,850 INFO L? ?]: Removed 311 outVars from TransFormulas that were not future-live. [2024-11-09 07:05:09,851 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:05:11,449 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:05:11,450 INFO L316 CfgBuilder]: Removed 58 assume(true) statements. [2024-11-09 07:05:11,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:05:11 BoogieIcfgContainer [2024-11-09 07:05:11,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:05:11,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:05:11,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:05:11,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:05:11,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:05:06" (1/3) ... [2024-11-09 07:05:11,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1891d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:05:11, skipping insertion in model container [2024-11-09 07:05:11,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:05:07" (2/3) ... [2024-11-09 07:05:11,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1891d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:05:11, skipping insertion in model container [2024-11-09 07:05:11,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:05:11" (3/3) ... [2024-11-09 07:05:11,464 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test3-1.i [2024-11-09 07:05:11,512 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:05:11,514 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:05:11,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:05:11,608 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;@31600996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:05:11,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:05:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 123 states have (on average 1.7154471544715446) internal successors, (211), 125 states have internal predecessors, (211), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:05:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 07:05:11,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:11,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:05:11,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:11,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash 782046997, now seen corresponding path program 1 times [2024-11-09 07:05:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:11,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398779660] [2024-11-09 07:05:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:05:11,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398779660] [2024-11-09 07:05:11,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398779660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:11,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:11,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:05:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761730244] [2024-11-09 07:05:11,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:11,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:05:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:11,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:05:11,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:05:11,907 INFO L87 Difference]: Start difference. First operand has 132 states, 123 states have (on average 1.7154471544715446) internal successors, (211), 125 states have internal predecessors, (211), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:13,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:15,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:18,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:18,753 INFO L93 Difference]: Finished difference Result 262 states and 441 transitions. [2024-11-09 07:05:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:05:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 07:05:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:18,766 INFO L225 Difference]: With dead ends: 262 [2024-11-09 07:05:18,766 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 07:05:18,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:05:18,772 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:18,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 6.8s Time] [2024-11-09 07:05:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 07:05:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-09 07:05:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 122 states have internal predecessors, (144), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:05:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2024-11-09 07:05:18,821 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 12 [2024-11-09 07:05:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:18,821 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2024-11-09 07:05:18,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2024-11-09 07:05:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:05:18,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:18,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:05:18,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:05:18,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:18,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1833304049, now seen corresponding path program 1 times [2024-11-09 07:05:18,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:18,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470658244] [2024-11-09 07:05:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:18,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:05:19,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470658244] [2024-11-09 07:05:19,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470658244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:19,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:19,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:05:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795786703] [2024-11-09 07:05:19,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:19,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:05:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:05:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:05:19,127 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:21,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:23,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:25,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:27,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:29,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:32,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:34,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:36,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:38,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:40,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:42,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:45,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:47,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:49,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:51,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:05:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:05:51,312 INFO L93 Difference]: Finished difference Result 314 states and 376 transitions. [2024-11-09 07:05:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:05:51,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 07:05:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:05:51,318 INFO L225 Difference]: With dead ends: 314 [2024-11-09 07:05:51,318 INFO L226 Difference]: Without dead ends: 185 [2024-11-09 07:05:51,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 07:05:51,320 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 56 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:05:51,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 352 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 15 Unknown, 0 Unchecked, 32.1s Time] [2024-11-09 07:05:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-09 07:05:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2024-11-09 07:05:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 175 states have (on average 1.177142857142857) internal successors, (206), 177 states have internal predecessors, (206), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:05:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 218 transitions. [2024-11-09 07:05:51,351 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 218 transitions. Word has length 14 [2024-11-09 07:05:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:05:51,352 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 218 transitions. [2024-11-09 07:05:51,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 218 transitions. [2024-11-09 07:05:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:05:51,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:05:51,357 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:05:51,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:05:51,357 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:05:51,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:05:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash 275237344, now seen corresponding path program 1 times [2024-11-09 07:05:51,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:05:51,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058855097] [2024-11-09 07:05:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:05:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:05:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:05:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:05:52,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:05:52,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058855097] [2024-11-09 07:05:52,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058855097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:05:52,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:05:52,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:05:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916227730] [2024-11-09 07:05:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:05:52,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:05:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:05:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:05:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:05:52,412 INFO L87 Difference]: Start difference. First operand 184 states and 218 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:05:54,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:56,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:05:58,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:00,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:02,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:04,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:06,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:08,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:10,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:12,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:14,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:15,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:17,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:20,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:22,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:24,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:26,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:28,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:30,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:32,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:06:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:32,678 INFO L93 Difference]: Finished difference Result 347 states and 418 transitions. [2024-11-09 07:06:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:06:32,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 07:06:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:32,681 INFO L225 Difference]: With dead ends: 347 [2024-11-09 07:06:32,681 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 07:06:32,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:06:32,684 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 79 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:32,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 520 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 16 Unknown, 0 Unchecked, 40.2s Time] [2024-11-09 07:06:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 07:06:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 183. [2024-11-09 07:06:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 174 states have (on average 1.1724137931034482) internal successors, (204), 176 states have internal predecessors, (204), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:06:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2024-11-09 07:06:32,704 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 27 [2024-11-09 07:06:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:32,705 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2024-11-09 07:06:32,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:06:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2024-11-09 07:06:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 07:06:32,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:32,708 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:32,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:06:32,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:06:32,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1388803317, now seen corresponding path program 1 times [2024-11-09 07:06:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:06:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383417086] [2024-11-09 07:06:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:06:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:06:33,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:06:33,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383417086] [2024-11-09 07:06:33,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383417086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:06:33,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379654974] [2024-11-09 07:06:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:33,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:06:33,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:06:33,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:06:33,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:06:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:35,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:06:35,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:35,052 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 07:06:35,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2024-11-09 07:06:35,230 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 07:06:35,283 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 07:06:35,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:06:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:06:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379654974] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 07:06:35,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:06:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 11 [2024-11-09 07:06:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641334289] [2024-11-09 07:06:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:35,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:06:35,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:06:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:06:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:06:35,521 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:06:37,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:39,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:41,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:43,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:45,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:48,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:50,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:53,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:55,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:57,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:06:59,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:00,618 INFO L93 Difference]: Finished difference Result 248 states and 297 transitions. [2024-11-09 07:07:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:07:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2024-11-09 07:07:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:00,621 INFO L225 Difference]: With dead ends: 248 [2024-11-09 07:07:00,621 INFO L226 Difference]: Without dead ends: 237 [2024-11-09 07:07:00,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:07:00,624 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 202 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:00,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 346 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 11 Unknown, 0 Unchecked, 25.0s Time] [2024-11-09 07:07:00,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-09 07:07:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 185. [2024-11-09 07:07:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 176 states have (on average 1.1704545454545454) internal successors, (206), 178 states have internal predecessors, (206), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 07:07:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 218 transitions. [2024-11-09 07:07:00,683 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 218 transitions. Word has length 56 [2024-11-09 07:07:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:00,683 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 218 transitions. [2024-11-09 07:07:00,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:07:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 218 transitions. [2024-11-09 07:07:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 07:07:00,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:00,689 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:00,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:00,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:00,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:07:00,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash -98960710, now seen corresponding path program 1 times [2024-11-09 07:07:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911262875] [2024-11-09 07:07:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:00,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 07:07:01,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911262875] [2024-11-09 07:07:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911262875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:01,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:07:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551380116] [2024-11-09 07:07:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:01,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:07:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:07:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:01,316 INFO L87 Difference]: Start difference. First operand 185 states and 218 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:07:03,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:04,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:06,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:08,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:10,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:12,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:14,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:16,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:18,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:20,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:23,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:25,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:27,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:29,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:31,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:33,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:35,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:07:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:35,869 INFO L93 Difference]: Finished difference Result 497 states and 596 transitions. [2024-11-09 07:07:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:07:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2024-11-09 07:07:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:35,872 INFO L225 Difference]: With dead ends: 497 [2024-11-09 07:07:35,872 INFO L226 Difference]: Without dead ends: 332 [2024-11-09 07:07:35,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:07:35,874 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 503 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:35,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 305 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 15 Unknown, 0 Unchecked, 34.5s Time] [2024-11-09 07:07:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-09 07:07:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 238. [2024-11-09 07:07:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.1798245614035088) internal successors, (269), 231 states have internal predecessors, (269), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 07:07:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2024-11-09 07:07:35,904 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 69 [2024-11-09 07:07:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:35,906 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2024-11-09 07:07:35,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:07:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2024-11-09 07:07:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 07:07:35,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:35,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:35,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:07:35,912 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:07:35,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 340212229, now seen corresponding path program 1 times [2024-11-09 07:07:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:35,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547333647] [2024-11-09 07:07:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:07:37,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547333647] [2024-11-09 07:07:37,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547333647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531590471] [2024-11-09 07:07:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:37,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:37,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:37,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:37,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:08:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:10,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:08:10,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:10,893 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 07:08:10,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:08:10,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531590471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:08:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:08:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-09 07:08:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784176774] [2024-11-09 07:08:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:08:10,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:08:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:08:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:08:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:08:10,896 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:08:12,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:14,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:16,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:18,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:20,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:22,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:25,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:27,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:29,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:31,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:33,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:35,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 07:08:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:36,859 INFO L93 Difference]: Finished difference Result 455 states and 545 transitions. [2024-11-09 07:08:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:08:36,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2024-11-09 07:08:36,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:36,868 INFO L225 Difference]: With dead ends: 455 [2024-11-09 07:08:36,868 INFO L226 Difference]: Without dead ends: 240 [2024-11-09 07:08:36,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:08:36,870 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:36,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 12 Unknown, 0 Unchecked, 25.9s Time] [2024-11-09 07:08:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-09 07:08:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-09 07:08:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 1.1834061135371179) internal successors, (271), 233 states have internal predecessors, (271), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 07:08:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2024-11-09 07:08:36,893 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 77 [2024-11-09 07:08:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:36,894 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2024-11-09 07:08:36,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:08:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2024-11-09 07:08:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 07:08:36,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:36,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:36,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:08:37,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:37,097 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:08:37,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1575503489, now seen corresponding path program 1 times [2024-11-09 07:08:37,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:37,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842315758] [2024-11-09 07:08:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:37,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:08:38,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842315758] [2024-11-09 07:08:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842315758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:38,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604484304] [2024-11-09 07:08:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:38,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:38,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:38,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7635b24-ab4c-444b-9023-a5cc1fa9ab22/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:09:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:06,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:09:06,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:09:06,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:09:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604484304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:09:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1107292771] [2024-11-09 07:09:06,295 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2024-11-09 07:09:06,295 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:09:06,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:09:06,308 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:09:06,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:10:00,642 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 7 for LOIs [2024-11-09 07:10:00,651 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 397 for LOIs [2024-11-09 07:10:03,192 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:10:19,472 WARN L286 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 234 DAG size of output: 226 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:10:33,777 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 236 DAG size of output: 226 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 07:11:05,609 WARN L286 SmtUtils]: Spent 27.24s on a formula simplification. DAG size of input: 494 DAG size of output: 311 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)