./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E --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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:26:20,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:26:20,673 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:26:20,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:26:20,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:26:20,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:26:20,712 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:26:20,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:26:20,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:26:20,714 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:26:20,715 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:26:20,715 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:26:20,715 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:26:20,715 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:26:20,715 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:26:20,716 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:26:20,716 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:26:20,716 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:26:20,716 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:26:20,717 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:26:20,717 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:26:20,717 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:26:20,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:26:20,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:26:20,717 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:26:20,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:26:20,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:26:20,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:26:20,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:26:20,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:26:20,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:26:20,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:26:20,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:26:20,720 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E 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 -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2024-11-14 05:26:21,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:26:21,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:26:21,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:26:21,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:26:21,022 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:26:21,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c Unable to find full path for "g++" [2024-11-14 05:26:22,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:26:23,085 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:26:23,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2024-11-14 05:26:23,107 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data/8d0298da1/141749d7f60c4871a00c6ca2d73dd9c9/FLAGa08f66dd6 [2024-11-14 05:26:23,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data/8d0298da1/141749d7f60c4871a00c6ca2d73dd9c9 [2024-11-14 05:26:23,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:26:23,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:26:23,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:26:23,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:26:23,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:26:23,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29354572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23, skipping insertion in model container [2024-11-14 05:26:23,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,166 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:26:23,392 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_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2854,2867] [2024-11-14 05:26:23,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:26:23,416 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:26:23,456 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_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2854,2867] [2024-11-14 05:26:23,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:26:23,481 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:26:23,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23 WrapperNode [2024-11-14 05:26:23,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:26:23,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:26:23,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:26:23,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:26:23,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,536 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 218 [2024-11-14 05:26:23,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:26:23,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:26:23,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:26:23,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:26:23,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,577 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:26:23,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:26:23,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:26:23,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:26:23,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (1/1) ... [2024-11-14 05:26:23,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:26:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:23,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:26:23,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:26:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:26:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 05:26:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 05:26:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-14 05:26:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:26:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:26:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:26:23,671 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 05:26:23,794 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:26:23,796 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:26:24,416 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:26:24,417 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:26:24,943 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:26:24,944 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 05:26:24,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:26:24 BoogieIcfgContainer [2024-11-14 05:26:24,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:26:24,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:26:24,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:26:24,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:26:24,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:26:23" (1/3) ... [2024-11-14 05:26:24,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ec5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:26:24, skipping insertion in model container [2024-11-14 05:26:24,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:26:23" (2/3) ... [2024-11-14 05:26:24,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ec5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:26:24, skipping insertion in model container [2024-11-14 05:26:24,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:26:24" (3/3) ... [2024-11-14 05:26:24,958 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-11-14 05:26:24,980 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:26:24,981 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-three-array-min.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-14 05:26:24,981 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:26:25,056 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-14 05:26:25,094 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 39 transitions, 99 flow [2024-11-14 05:26:25,176 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 3.3987915407854983) internal successors, (1125), 331 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:25,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:26:25,227 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;@abc5b6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:26:25,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 05:26:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 3.3987915407854983) internal successors, (1125), 331 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:26:25,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:25,248 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] [2024-11-14 05:26:25,249 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:25,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash -36939652, now seen corresponding path program 1 times [2024-11-14 05:26:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:25,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707012087] [2024-11-14 05:26:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:25,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:25,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:25,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707012087] [2024-11-14 05:26:25,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707012087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:26:25,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:26:25,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:26:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924469800] [2024-11-14 05:26:25,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:25,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:26:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:26:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:26:25,894 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 3.3987915407854983) internal successors, (1125), 331 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:26,060 INFO L93 Difference]: Finished difference Result 663 states and 2249 transitions. [2024-11-14 05:26:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:26:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:26:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:26,082 INFO L225 Difference]: With dead ends: 663 [2024-11-14 05:26:26,082 INFO L226 Difference]: Without dead ends: 333 [2024-11-14 05:26:26,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:26:26,093 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:26,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:26:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-14 05:26:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-11-14 05:26:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 3.391566265060241) internal successors, (1126), 332 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 1126 transitions. [2024-11-14 05:26:26,174 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 1126 transitions. Word has length 21 [2024-11-14 05:26:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:26,174 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 1126 transitions. [2024-11-14 05:26:26,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 1126 transitions. [2024-11-14 05:26:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:26:26,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:26,177 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] [2024-11-14 05:26:26,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:26:26,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:26,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash -26004818, now seen corresponding path program 1 times [2024-11-14 05:26:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:26,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293219751] [2024-11-14 05:26:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:26:26,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:26,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293219751] [2024-11-14 05:26:26,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293219751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:26:26,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:26:26,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:26:26,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851920067] [2024-11-14 05:26:26,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:26,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:26:26,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:26,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:26:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:26:26,503 INFO L87 Difference]: Start difference. First operand 333 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:26,658 INFO L93 Difference]: Finished difference Result 664 states and 2250 transitions. [2024-11-14 05:26:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:26:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-14 05:26:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:26,665 INFO L225 Difference]: With dead ends: 664 [2024-11-14 05:26:26,666 INFO L226 Difference]: Without dead ends: 335 [2024-11-14 05:26:26,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:26:26,668 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:26,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 10 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:26:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-14 05:26:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2024-11-14 05:26:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 3.377245508982036) internal successors, (1128), 334 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1128 transitions. [2024-11-14 05:26:26,720 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1128 transitions. Word has length 22 [2024-11-14 05:26:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:26,721 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 1128 transitions. [2024-11-14 05:26:26,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1128 transitions. [2024-11-14 05:26:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:26,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:26,726 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] [2024-11-14 05:26:26,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:26:26,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:26,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1715729129, now seen corresponding path program 1 times [2024-11-14 05:26:26,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:26,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628627734] [2024-11-14 05:26:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:26:27,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628627734] [2024-11-14 05:26:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628627734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:26:27,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:26:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:26:27,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773179907] [2024-11-14 05:26:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:27,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:26:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:26:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:26:27,054 INFO L87 Difference]: Start difference. First operand 335 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:27,196 INFO L93 Difference]: Finished difference Result 554 states and 1899 transitions. [2024-11-14 05:26:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:26:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:27,203 INFO L225 Difference]: With dead ends: 554 [2024-11-14 05:26:27,203 INFO L226 Difference]: Without dead ends: 515 [2024-11-14 05:26:27,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:26:27,206 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:27,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:26:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-14 05:26:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 479. [2024-11-14 05:26:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.4560669456066946) internal successors, (1652), 478 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1652 transitions. [2024-11-14 05:26:27,253 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1652 transitions. Word has length 24 [2024-11-14 05:26:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:27,254 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 1652 transitions. [2024-11-14 05:26:27,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1652 transitions. [2024-11-14 05:26:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:26:27,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:27,256 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, 1, 1, 1] [2024-11-14 05:26:27,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:26:27,257 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:27,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 917945660, now seen corresponding path program 1 times [2024-11-14 05:26:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144347670] [2024-11-14 05:26:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:26:27,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:27,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144347670] [2024-11-14 05:26:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144347670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:27,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189203731] [2024-11-14 05:26:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:27,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:27,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:27,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:27,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:26:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:27,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:27,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:26:27,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:26:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189203731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2123060489] [2024-11-14 05:26:27,947 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:27,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-14 05:26:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542075546] [2024-11-14 05:26:27,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:27,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:26:27,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:26:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:26:27,954 INFO L87 Difference]: Start difference. First operand 479 states and 1652 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:28,341 INFO L93 Difference]: Finished difference Result 994 states and 3428 transitions. [2024-11-14 05:26:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:26:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-14 05:26:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:28,350 INFO L225 Difference]: With dead ends: 994 [2024-11-14 05:26:28,350 INFO L226 Difference]: Without dead ends: 482 [2024-11-14 05:26:28,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:26:28,355 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:28,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 19 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:26:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-14 05:26:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2024-11-14 05:26:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.4407484407484406) internal successors, (1655), 481 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1655 transitions. [2024-11-14 05:26:28,414 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1655 transitions. Word has length 30 [2024-11-14 05:26:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:28,414 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 1655 transitions. [2024-11-14 05:26:28,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1655 transitions. [2024-11-14 05:26:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:26:28,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:28,418 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] [2024-11-14 05:26:28,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:26:28,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:28,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:28,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash 813737601, now seen corresponding path program 2 times [2024-11-14 05:26:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:28,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844632527] [2024-11-14 05:26:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:26:28,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844632527] [2024-11-14 05:26:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844632527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829544911] [2024-11-14 05:26:28,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:26:28,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:28,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:28,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:26:29,033 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:26:29,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:29,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:29,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:26:29,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:26:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829544911] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:29,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:26:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-14 05:26:29,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291897492] [2024-11-14 05:26:29,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:29,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:26:29,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:26:29,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:26:29,226 INFO L87 Difference]: Start difference. First operand 482 states and 1655 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:29,410 INFO L93 Difference]: Finished difference Result 677 states and 2324 transitions. [2024-11-14 05:26:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:26:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:26:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:29,419 INFO L225 Difference]: With dead ends: 677 [2024-11-14 05:26:29,420 INFO L226 Difference]: Without dead ends: 572 [2024-11-14 05:26:29,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:26:29,422 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 96 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:29,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 14 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:26:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-14 05:26:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-14 05:26:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 3.458844133099825) internal successors, (1975), 571 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1975 transitions. [2024-11-14 05:26:29,499 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1975 transitions. Word has length 33 [2024-11-14 05:26:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:29,499 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 1975 transitions. [2024-11-14 05:26:29,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1975 transitions. [2024-11-14 05:26:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 05:26:29,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:29,504 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] [2024-11-14 05:26:29,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:26:29,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:29,705 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:29,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash -308242598, now seen corresponding path program 1 times [2024-11-14 05:26:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:29,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428315561] [2024-11-14 05:26:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:26:29,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428315561] [2024-11-14 05:26:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428315561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332599108] [2024-11-14 05:26:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:29,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:29,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:29,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:26:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:30,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:26:30,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:26:30,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:26:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332599108] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:30,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:26:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-14 05:26:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374366063] [2024-11-14 05:26:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:26:30,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:26:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:26:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:26:30,320 INFO L87 Difference]: Start difference. First operand 572 states and 1975 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:30,529 INFO L93 Difference]: Finished difference Result 975 states and 3368 transitions. [2024-11-14 05:26:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:26:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-14 05:26:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:30,538 INFO L225 Difference]: With dead ends: 975 [2024-11-14 05:26:30,538 INFO L226 Difference]: Without dead ends: 730 [2024-11-14 05:26:30,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:26:30,541 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:30,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:26:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-14 05:26:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2024-11-14 05:26:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 3.488340192043896) internal successors, (2543), 729 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 2543 transitions. [2024-11-14 05:26:30,658 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 2543 transitions. Word has length 36 [2024-11-14 05:26:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:30,661 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 2543 transitions. [2024-11-14 05:26:30,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 2543 transitions. [2024-11-14 05:26:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:26:30,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:30,665 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] [2024-11-14 05:26:30,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:26:30,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:30,871 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:30,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1839751501, now seen corresponding path program 1 times [2024-11-14 05:26:30,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:30,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249175913] [2024-11-14 05:26:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:30,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:26:34,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249175913] [2024-11-14 05:26:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249175913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799356763] [2024-11-14 05:26:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:34,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:34,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:34,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:26:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:34,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-14 05:26:34,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:34,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 05:26:34,892 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:26:34,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-14 05:26:34,955 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-14 05:26:34,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-14 05:26:35,277 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2024-11-14 05:26:35,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 55 [2024-11-14 05:26:36,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:26:36,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 221 treesize of output 251 [2024-11-14 05:26:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:26:37,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:48,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:26:48,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 115 [2024-11-14 05:26:48,930 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,931 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,941 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 05:26:48,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 1 [2024-11-14 05:26:48,945 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,947 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,956 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 05:26:48,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 1 [2024-11-14 05:26:48,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,970 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 05:26:48,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 1 [2024-11-14 05:26:48,974 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,974 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:26:48,984 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-14 05:26:48,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 1 [2024-11-14 05:26:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:26:49,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799356763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1548334745] [2024-11-14 05:26:49,169 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:49,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:49,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 33 [2024-11-14 05:26:49,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882285310] [2024-11-14 05:26:49,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:49,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:26:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:26:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=956, Unknown=1, NotChecked=0, Total=1122 [2024-11-14 05:26:49,172 INFO L87 Difference]: Start difference. First operand 730 states and 2543 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:51,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:26:56,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:27:03,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:05,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:08,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:10,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:18,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:20,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:25,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:27,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:29,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:31,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:27:34,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:28:02,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:04,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:06,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:08,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:10,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:12,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:15,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:28:17,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:22,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:24,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:26,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:28,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:38,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:54,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:29:57,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:00,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:02,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:04,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:07,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:09,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:11,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:36,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:38,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:40,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:42,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:44,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:46,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:49,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:50,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:52,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:54,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:56,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:30:59,194 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse49 (select |c_#memory_int| c_~A~0.base)) (.cse11 (+ c_~A~0.offset 4)) (.cse48 (select |c_#memory_int| c_~B~0.base)) (.cse10 (+ 4 c_~B~0.offset))) (let ((.cse23 (* |c_thread2Thread1of1ForFork2_~i~1#1| 4)) (.cse19 (+ c_~mina~0 1)) (.cse0 (+ c_~mina~0 c_~minb~0)) (.cse8 (+ c_~minc~0 1)) (.cse12 (select |c_#memory_int| c_~C~0.base)) (.cse58 (select .cse48 .cse10)) (.cse16 (+ c_~minb~0 1)) (.cse57 (select .cse49 .cse11))) (let ((.cse4 (+ .cse57 c_~minb~0)) (.cse5 (< .cse58 .cse16)) (.cse1 (+ (select .cse12 (+ (* c_thread3Thread1of1ForFork0_~i~2 4) c_~C~0.offset)) 1)) (.cse27 (+ (select .cse12 (+ c_~C~0.offset 4)) 1)) (.cse24 (< .cse0 .cse8)) (.cse35 (< c_~minb~0 .cse58)) (.cse36 (+ c_~mina~0 .cse58)) (.cse2 (< .cse57 .cse19)) (.cse3 (< c_~mina~0 .cse57)) (.cse13 (+ .cse57 .cse58)) (.cse20 (+ (select .cse48 (+ .cse23 c_~B~0.offset)) (select .cse49 (+ .cse23 c_~A~0.offset))))) (and (or (and (or (< .cse0 .cse1) .cse2) (or .cse3 (< .cse4 .cse1))) .cse5) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse9 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (let ((.cse7 (select (select .cse9 c_~A~0.base) .cse11)) (.cse6 (select (select .cse9 c_~B~0.base) .cse10))) (or (< c_~minb~0 .cse6) (< c_~mina~0 .cse7) (< (+ .cse7 .cse6) .cse8))))) (< v_ArrVal_169 .cse13))) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse15 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (let ((.cse14 (select (select .cse15 c_~A~0.base) .cse11))) (or (< c_~mina~0 .cse14) (< (+ .cse14 c_~minb~0) (+ v_ArrVal_169 1)) (< (select (select .cse15 c_~B~0.base) .cse10) .cse16))))) (< v_ArrVal_169 .cse13))) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse18 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (let ((.cse17 (select (select .cse18 c_~B~0.base) .cse10))) (or (< c_~minb~0 .cse17) (< (select (select .cse18 c_~A~0.base) .cse11) .cse19) (< (+ c_~mina~0 .cse17) .cse8))))) (< v_ArrVal_169 .cse13))) (forall ((v_ArrVal_169 Int)) (or (< v_ArrVal_169 .cse20) (forall ((~C~0.offset Int)) (let ((.cse22 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169)))) (let ((.cse21 (select (select .cse22 c_~B~0.base) .cse10))) (or (< (+ .cse21 c_~mina~0) .cse8) (< (select (select .cse22 c_~A~0.base) .cse11) .cse19) (< c_~minb~0 .cse21))))))) .cse24 (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse25 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169)))) (let ((.cse26 (select (select .cse25 c_~A~0.base) .cse11))) (or (< (select (select .cse25 c_~B~0.base) .cse10) .cse16) (< c_~mina~0 .cse26) (< (+ .cse26 c_~minb~0) .cse8))))) (< v_ArrVal_169 .cse20))) (or .cse5 (and (or .cse3 (< .cse4 .cse27)) (or .cse2 (< .cse0 .cse27)))) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse30 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (let ((.cse29 (select (select .cse30 c_~A~0.base) .cse11)) (.cse28 (select (select .cse30 c_~B~0.base) .cse10))) (or (< c_~minb~0 .cse28) (< c_~mina~0 .cse29) (< (+ .cse29 .cse28) (+ v_ArrVal_169 1)))))) (< v_ArrVal_169 .cse13))) (or (and (or .cse3 (< .cse4 .cse8)) (or .cse24 .cse2)) .cse5) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse33 (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169))) (let ((.cse34 (store |c_#memory_int| c_~C~0.base .cse33))) (let ((.cse32 (select (select .cse34 c_~B~0.base) .cse10)) (.cse31 (select (select .cse34 c_~A~0.base) .cse11))) (or (< (+ .cse31 .cse32) (+ (select .cse33 (+ ~C~0.offset 4)) 1)) (< c_~minb~0 .cse32) (< c_~mina~0 .cse31)))))) (< v_ArrVal_169 .cse20))) (= c_thread3Thread1of1ForFork0_~i~2 1) (or .cse35 (and (or .cse3 (< .cse13 .cse1)) (or .cse2 (< .cse36 .cse1)))) (or .cse24 (forall ((~C~0.offset Int) (v_ArrVal_169 Int)) (let ((.cse37 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (or (< (select (select .cse37 c_~A~0.base) .cse11) .cse19) (< (select (select .cse37 c_~B~0.base) .cse10) .cse16) (< v_ArrVal_169 .cse13))))) (forall ((v_ArrVal_169 Int)) (or (< v_ArrVal_169 .cse20) (forall ((~C~0.offset Int)) (let ((.cse40 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169)))) (let ((.cse39 (select (select .cse40 c_~A~0.base) .cse11)) (.cse38 (select (select .cse40 c_~B~0.base) .cse10))) (or (< c_~minb~0 .cse38) (< c_~mina~0 .cse39) (< (+ .cse39 .cse38) .cse8))))))) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse42 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (let ((.cse41 (select (select .cse42 c_~A~0.base) .cse11))) (or (< c_~mina~0 .cse41) (< (select (select .cse42 c_~B~0.base) .cse10) .cse16) (< (+ .cse41 c_~minb~0) .cse8))))) (< v_ArrVal_169 .cse13))) (= c_~B~0.offset 0) (forall ((v_ArrVal_169 Int)) (or (< v_ArrVal_169 .cse20) (forall ((~C~0.offset Int)) (let ((.cse44 (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169))) (let ((.cse45 (store |c_#memory_int| c_~C~0.base .cse44))) (let ((.cse43 (select (select .cse45 c_~A~0.base) .cse11))) (or (< (+ .cse43 c_~minb~0) (+ (select .cse44 (+ ~C~0.offset 4)) 1)) (< (select (select .cse45 c_~B~0.base) .cse10) .cse16) (< c_~mina~0 .cse43)))))))) (forall ((v_ArrVal_169 Int)) (or (< v_ArrVal_169 .cse20) (forall ((~C~0.offset Int)) (let ((.cse47 (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169))) (let ((.cse46 (store |c_#memory_int| c_~C~0.base .cse47))) (or (< (select (select .cse46 c_~A~0.base) .cse11) .cse19) (< .cse0 (+ (select .cse47 (+ ~C~0.offset 4)) 1)) (< (select (select .cse46 c_~B~0.base) .cse10) .cse16))))))) (= c_~A~0.offset 0) (or (< (+ (select .cse48 4) (select .cse49 4)) .cse8) .cse24) (or .cse35 (and (or .cse2 (< .cse36 .cse27)) (or .cse3 (< .cse13 .cse27)))) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse51 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (let ((.cse50 (select (select .cse51 c_~B~0.base) .cse10))) (or (< c_~minb~0 .cse50) (< (select (select .cse51 c_~A~0.base) .cse11) .cse19) (< (+ c_~mina~0 .cse50) (+ v_ArrVal_169 1)))))) (< v_ArrVal_169 .cse13))) (or .cse24 (forall ((~C~0.offset Int) (v_ArrVal_169 Int)) (let ((.cse52 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169)))) (or (< v_ArrVal_169 .cse20) (< (select (select .cse52 c_~A~0.base) .cse11) .cse19) (< (select (select .cse52 c_~B~0.base) .cse10) .cse16))))) (forall ((v_ArrVal_169 Int)) (or (forall ((~C~0.offset Int)) (let ((.cse53 (store |c_#memory_int| c_~C~0.base (store .cse12 (+ ~C~0.offset 4) v_ArrVal_169)))) (or (< (select (select .cse53 c_~A~0.base) .cse11) .cse19) (< (select (select .cse53 c_~B~0.base) .cse10) .cse16)))) (< .cse0 (+ v_ArrVal_169 1)) (< v_ArrVal_169 .cse13))) (or .cse35 (and (or (< .cse36 .cse8) .cse2) (or .cse3 (< .cse13 .cse8)))) (forall ((v_ArrVal_169 Int)) (or (< v_ArrVal_169 .cse20) (forall ((~C~0.offset Int)) (let ((.cse55 (store .cse12 (+ .cse23 ~C~0.offset) v_ArrVal_169))) (let ((.cse56 (store |c_#memory_int| c_~C~0.base .cse55))) (let ((.cse54 (select (select .cse56 c_~B~0.base) .cse10))) (or (< (+ .cse54 c_~mina~0) (+ (select .cse55 (+ ~C~0.offset 4)) 1)) (< (select (select .cse56 c_~A~0.base) .cse11) .cse19) (< c_~minb~0 .cse54)))))))))))) is different from false [2024-11-14 05:31:06,429 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 [0, 1] [2024-11-14 05:31:08,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:11,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:13,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:15,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:17,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:19,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:31,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:33,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:38,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:40,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:43,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:45,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:47,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:50,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:52,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:54,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:56,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:31:58,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:01,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:16,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:18,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:19,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:21,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:24,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:26,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:27,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:29,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:31,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:33,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:36,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:43,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:45,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:48,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:51,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:32:53,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:55,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:57,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:32:59,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:01,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:03,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:05,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:08,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:10,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:33:12,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:33:14,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:33:17,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:19,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:21,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:23,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:25,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:26,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:29,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:31,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:32,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:34,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:36,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:38,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:40,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:42,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:44,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:33:49,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:51,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:53,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:56,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:33:58,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:34:00,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-14 05:34:02,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:34:04,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:34:07,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-14 05:34:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:34:07,671 INFO L93 Difference]: Finished difference Result 2269 states and 7876 transitions. [2024-11-14 05:34:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-14 05:34:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-14 05:34:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:34:07,692 INFO L225 Difference]: With dead ends: 2269 [2024-11-14 05:34:07,693 INFO L226 Difference]: Without dead ends: 2192 [2024-11-14 05:34:07,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 191.6s TimeCoverageRelationStatistics Valid=1018, Invalid=5577, Unknown=51, NotChecked=160, Total=6806 [2024-11-14 05:34:07,696 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 821 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 129 mSolverCounterUnsat, 102 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 102 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 254.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:34:07,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 603 Invalid, 2693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2304 Invalid, 102 Unknown, 158 Unchecked, 254.2s Time] [2024-11-14 05:34:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2024-11-14 05:34:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 929. [2024-11-14 05:34:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 3.5043103448275863) internal successors, (3252), 928 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:34:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3252 transitions. [2024-11-14 05:34:08,081 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3252 transitions. Word has length 37 [2024-11-14 05:34:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:34:08,081 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 3252 transitions. [2024-11-14 05:34:08,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 33 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:34:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3252 transitions. [2024-11-14 05:34:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:34:08,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:34:08,085 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] [2024-11-14 05:34:08,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:34:08,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:08,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:34:08,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:34:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1944919371, now seen corresponding path program 2 times [2024-11-14 05:34:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:34:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451068919] [2024-11-14 05:34:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:34:08,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:34:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:34:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:34:13,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:34:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451068919] [2024-11-14 05:34:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451068919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:34:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940322573] [2024-11-14 05:34:13,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:34:13,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:34:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:34:13,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:34:13,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:34:13,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:34:13,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:34:13,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 05:34:13,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:34:13,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 05:34:13,424 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:34:13,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-14 05:34:13,541 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-14 05:34:13,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-14 05:34:14,412 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-14 05:34:14,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 60 treesize of output 49 [2024-11-14 05:34:19,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:34:19,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 1 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 326 treesize of output 666 [2024-11-14 05:38:27,993 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 05:38:27,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 05:38:27,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-14 05:38:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [586714535] [2024-11-14 05:38:27,995 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:38:27,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:38:27,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-14 05:38:27,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669960458] [2024-11-14 05:38:27,995 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:27,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 05:38:27,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 05:38:27,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:38:27,998 INFO L87 Difference]: Start difference. First operand 929 states and 3252 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:27,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:38:27,999 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:28,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:38:28,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:38:28,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:28,201 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-14 05:38:28,204 INFO L158 Benchmark]: Toolchain (without parser) took 725069.36ms. Allocated memory was 117.4MB in the beginning and 578.8MB in the end (delta: 461.4MB). Free memory was 92.9MB in the beginning and 343.2MB in the end (delta: -250.2MB). Peak memory consumption was 207.4MB. Max. memory is 16.1GB. [2024-11-14 05:38:28,205 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:38:28,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.92ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.1MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:38:28,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.03ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:38:28,205 INFO L158 Benchmark]: Boogie Preprocessor took 56.76ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 76.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:38:28,205 INFO L158 Benchmark]: RCFGBuilder took 1350.10ms. Allocated memory is still 117.4MB. Free memory was 76.4MB in the beginning and 50.6MB in the end (delta: 25.8MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2024-11-14 05:38:28,206 INFO L158 Benchmark]: TraceAbstraction took 723257.44ms. Allocated memory was 117.4MB in the beginning and 578.8MB in the end (delta: 461.4MB). Free memory was 49.9MB in the beginning and 343.2MB in the end (delta: -293.3MB). Peak memory consumption was 168.5MB. Max. memory is 16.1GB. [2024-11-14 05:38:28,207 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.92ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.1MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.03ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.76ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 76.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1350.10ms. Allocated memory is still 117.4MB. Free memory was 76.4MB in the beginning and 50.6MB in the end (delta: 25.8MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * TraceAbstraction took 723257.44ms. Allocated memory was 117.4MB in the beginning and 578.8MB in the end (delta: 461.4MB). Free memory was 49.9MB in the beginning and 343.2MB in the end (delta: -293.3MB). Peak memory consumption was 168.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E --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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:38:30,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:38:30,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 05:38:30,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:38:30,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:38:30,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:38:30,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:38:30,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:38:30,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:38:30,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:38:30,980 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:38:30,980 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:38:30,980 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:38:30,980 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:38:30,981 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:38:30,981 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:38:30,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:38:30,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:38:30,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:38:30,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:38:30,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:38:30,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:38:30,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:38:30,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:38:30,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:38:30,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:38:30,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:38:30,984 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:38:30,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E 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 -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2024-11-14 05:38:31,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:38:31,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:38:31,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:38:31,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:38:31,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:38:31,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c Unable to find full path for "g++" [2024-11-14 05:38:33,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:38:33,655 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:38:33,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2024-11-14 05:38:33,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data/94572fff9/89f2d1f87d2e4872b1ef98b5e127523d/FLAG192518dfe [2024-11-14 05:38:33,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/data/94572fff9/89f2d1f87d2e4872b1ef98b5e127523d [2024-11-14 05:38:33,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:38:33,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:38:33,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:38:33,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:38:33,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:38:33,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:38:33" (1/1) ... [2024-11-14 05:38:33,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af26175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:33, skipping insertion in model container [2024-11-14 05:38:33,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:38:33" (1/1) ... [2024-11-14 05:38:33,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:38:33,997 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_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2854,2867] [2024-11-14 05:38:34,010 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 05:38:34,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:38:34,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:38:34,081 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_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2854,2867] [2024-11-14 05:38:34,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:38:34,115 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:38:34,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34 WrapperNode [2024-11-14 05:38:34,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:38:34,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:38:34,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:38:34,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:38:34,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,187 INFO L138 Inliner]: procedures = 27, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 211 [2024-11-14 05:38:34,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:38:34,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:38:34,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:38:34,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:38:34,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:38:34,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:38:34,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:38:34,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:38:34,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (1/1) ... [2024-11-14 05:38:34,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:38:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:34,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:38:34,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:38:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:38:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 05:38:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 05:38:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 05:38:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 05:38:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 05:38:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 05:38:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-14 05:38:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-14 05:38:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 05:38:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 05:38:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:38:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:38:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:38:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 05:38:34,348 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 05:38:34,524 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:38:34,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:38:35,252 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:38:35,252 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:38:35,793 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:38:35,794 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 05:38:35,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:38:35 BoogieIcfgContainer [2024-11-14 05:38:35,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:38:35,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:38:35,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:38:35,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:38:35,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:38:33" (1/3) ... [2024-11-14 05:38:35,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e125b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:38:35, skipping insertion in model container [2024-11-14 05:38:35,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:34" (2/3) ... [2024-11-14 05:38:35,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e125b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:38:35, skipping insertion in model container [2024-11-14 05:38:35,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:38:35" (3/3) ... [2024-11-14 05:38:35,808 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-11-14 05:38:35,825 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:38:35,827 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-three-array-min.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-14 05:38:35,828 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:38:35,916 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-14 05:38:35,950 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 39 transitions, 99 flow [2024-11-14 05:38:36,020 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 3.3987915407854983) internal successors, (1125), 331 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:38:36,076 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;@5499fdd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:38:36,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 05:38:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 3.3987915407854983) internal successors, (1125), 331 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:38:36,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:36,104 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] [2024-11-14 05:38:36,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:36,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash -839258510, now seen corresponding path program 1 times [2024-11-14 05:38:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:36,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980178252] [2024-11-14 05:38:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:36,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:36,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:36,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 05:38:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:36,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:36,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:36,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:36,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:36,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980178252] [2024-11-14 05:38:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980178252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:38:36,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108680941] [2024-11-14 05:38:36,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:36,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:36,531 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 3.3987915407854983) internal successors, (1125), 331 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:36,812 INFO L93 Difference]: Finished difference Result 663 states and 2249 transitions. [2024-11-14 05:38:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:38:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:36,831 INFO L225 Difference]: With dead ends: 663 [2024-11-14 05:38:36,831 INFO L226 Difference]: Without dead ends: 333 [2024-11-14 05:38:36,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:36,839 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:36,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:38:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-14 05:38:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-11-14 05:38:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 3.391566265060241) internal successors, (1126), 332 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 1126 transitions. [2024-11-14 05:38:36,907 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 1126 transitions. Word has length 21 [2024-11-14 05:38:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:36,908 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 1126 transitions. [2024-11-14 05:38:36,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 1126 transitions. [2024-11-14 05:38:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:38:36,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:36,912 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] [2024-11-14 05:38:36,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 05:38:37,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:37,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:37,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1934660594, now seen corresponding path program 1 times [2024-11-14 05:38:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:37,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865510929] [2024-11-14 05:38:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:37,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:37,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:37,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:37,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 05:38:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:37,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:38:37,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:38:37,405 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:37,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865510929] [2024-11-14 05:38:37,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865510929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:37,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:37,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453186649] [2024-11-14 05:38:37,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:37,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:38:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:37,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:38:37,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:38:37,411 INFO L87 Difference]: Start difference. First operand 333 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:37,662 INFO L93 Difference]: Finished difference Result 664 states and 2250 transitions. [2024-11-14 05:38:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:38:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-14 05:38:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:37,674 INFO L225 Difference]: With dead ends: 664 [2024-11-14 05:38:37,674 INFO L226 Difference]: Without dead ends: 335 [2024-11-14 05:38:37,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:38:37,680 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:37,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 10 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:38:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-14 05:38:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2024-11-14 05:38:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 3.377245508982036) internal successors, (1128), 334 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1128 transitions. [2024-11-14 05:38:37,758 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1128 transitions. Word has length 22 [2024-11-14 05:38:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:37,758 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 1128 transitions. [2024-11-14 05:38:37,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1128 transitions. [2024-11-14 05:38:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:38:37,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:37,761 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] [2024-11-14 05:38:37,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 05:38:37,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:37,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:37,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash 936197275, now seen corresponding path program 1 times [2024-11-14 05:38:37,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456828740] [2024-11-14 05:38:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:37,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:37,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:37,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 05:38:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:38,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:38:38,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:38,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:38:38,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-14 05:38:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:38,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:38,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:38,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456828740] [2024-11-14 05:38:38,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456828740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:38,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:38,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:38,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386454960] [2024-11-14 05:38:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:38,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:38,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:38,443 INFO L87 Difference]: Start difference. First operand 335 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:38,743 INFO L93 Difference]: Finished difference Result 604 states and 2054 transitions. [2024-11-14 05:38:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:38:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:38,753 INFO L225 Difference]: With dead ends: 604 [2024-11-14 05:38:38,753 INFO L226 Difference]: Without dead ends: 585 [2024-11-14 05:38:38,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:38,755 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:38,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:38:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-14 05:38:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 549. [2024-11-14 05:38:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 3.4251824817518246) internal successors, (1877), 548 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1877 transitions. [2024-11-14 05:38:38,836 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1877 transitions. Word has length 24 [2024-11-14 05:38:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:38,837 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 1877 transitions. [2024-11-14 05:38:38,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1877 transitions. [2024-11-14 05:38:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:38:38,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:38,840 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] [2024-11-14 05:38:38,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 05:38:39,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:39,045 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:39,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1365127942, now seen corresponding path program 1 times [2024-11-14 05:38:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850580491] [2024-11-14 05:38:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:39,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:39,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:39,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:39,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 05:38:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:39,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:38:39,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:39,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:39,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850580491] [2024-11-14 05:38:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850580491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:39,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2047799522] [2024-11-14 05:38:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:39,590 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:39,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:38:39,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:38:39,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-14 05:38:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:39,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:39,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:38:40,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:38:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2047799522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731504936] [2024-11-14 05:38:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:40,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:40,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:40,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:38:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:40,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:40,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:40,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:40,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731504936] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:40,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:38:40,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 5, 5, 5] total 22 [2024-11-14 05:38:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809337374] [2024-11-14 05:38:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:40,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-14 05:38:40,762 INFO L87 Difference]: Start difference. First operand 549 states and 1877 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:41,458 INFO L93 Difference]: Finished difference Result 833 states and 2841 transitions. [2024-11-14 05:38:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:38:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:38:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:41,468 INFO L225 Difference]: With dead ends: 833 [2024-11-14 05:38:41,469 INFO L226 Difference]: Without dead ends: 778 [2024-11-14 05:38:41,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:38:41,471 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 62 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:41,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 62 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:38:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-11-14 05:38:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 628. [2024-11-14 05:38:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 3.4354066985645932) internal successors, (2154), 627 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2154 transitions. [2024-11-14 05:38:41,548 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2154 transitions. Word has length 25 [2024-11-14 05:38:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:41,548 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 2154 transitions. [2024-11-14 05:38:41,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2154 transitions. [2024-11-14 05:38:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:38:41,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:41,551 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] [2024-11-14 05:38:41,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:41,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:38:41,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 05:38:42,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:42,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:42,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 314635032, now seen corresponding path program 2 times [2024-11-14 05:38:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45857439] [2024-11-14 05:38:42,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:38:42,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:42,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:42,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:42,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 05:38:42,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:38:42,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:42,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:42,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:42,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:42,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:42,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45857439] [2024-11-14 05:38:42,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45857439] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:42,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:38:42,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-14 05:38:42,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013598911] [2024-11-14 05:38:42,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:42,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:42,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:42,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:42,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:38:42,622 INFO L87 Difference]: Start difference. First operand 628 states and 2154 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:43,195 INFO L93 Difference]: Finished difference Result 882 states and 3016 transitions. [2024-11-14 05:38:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:38:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:43,204 INFO L225 Difference]: With dead ends: 882 [2024-11-14 05:38:43,204 INFO L226 Difference]: Without dead ends: 827 [2024-11-14 05:38:43,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:38:43,206 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:43,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 45 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:38:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-14 05:38:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 656. [2024-11-14 05:38:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.5251908396946563) internal successors, (2309), 655 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2309 transitions. [2024-11-14 05:38:43,270 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2309 transitions. Word has length 25 [2024-11-14 05:38:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:43,270 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 2309 transitions. [2024-11-14 05:38:43,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2309 transitions. [2024-11-14 05:38:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:38:43,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:43,274 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] [2024-11-14 05:38:43,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:43,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:43,474 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:43,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 107827066, now seen corresponding path program 3 times [2024-11-14 05:38:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:43,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521999057] [2024-11-14 05:38:43,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:38:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:43,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:43,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 05:38:43,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:38:43,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:43,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:43,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:43,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:43,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521999057] [2024-11-14 05:38:43,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521999057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120251254] [2024-11-14 05:38:43,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:43,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:38:43,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:38:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:43,894 INFO L87 Difference]: Start difference. First operand 656 states and 2309 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:44,430 INFO L93 Difference]: Finished difference Result 851 states and 3051 transitions. [2024-11-14 05:38:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:38:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:44,440 INFO L225 Difference]: With dead ends: 851 [2024-11-14 05:38:44,440 INFO L226 Difference]: Without dead ends: 794 [2024-11-14 05:38:44,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:44,442 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:44,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 43 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:38:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-14 05:38:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 682. [2024-11-14 05:38:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 3.487518355359765) internal successors, (2375), 681 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2375 transitions. [2024-11-14 05:38:44,535 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2375 transitions. Word has length 25 [2024-11-14 05:38:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:44,536 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 2375 transitions. [2024-11-14 05:38:44,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2375 transitions. [2024-11-14 05:38:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:38:44,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:44,541 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] [2024-11-14 05:38:44,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-14 05:38:44,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:44,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:44,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1405802706, now seen corresponding path program 4 times [2024-11-14 05:38:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:44,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898979155] [2024-11-14 05:38:44,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:44,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:44,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:44,745 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:44,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-14 05:38:44,851 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:44,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:44,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:38:44,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:44,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:45,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898979155] [2024-11-14 05:38:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898979155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792160962] [2024-11-14 05:38:45,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:45,043 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:45,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:38:45,046 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:38:45,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-14 05:38:45,262 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:45,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:45,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:38:45,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:45,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1792160962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238963299] [2024-11-14 05:38:45,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:45,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:45,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:45,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:45,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:38:45,462 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:45,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:45,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:38:45,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:45,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:45,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238963299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:45,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:38:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 11 [2024-11-14 05:38:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469682432] [2024-11-14 05:38:45,536 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:45,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:38:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:38:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:38:45,537 INFO L87 Difference]: Start difference. First operand 682 states and 2375 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:46,940 INFO L93 Difference]: Finished difference Result 1665 states and 6049 transitions. [2024-11-14 05:38:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:38:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:38:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:46,957 INFO L225 Difference]: With dead ends: 1665 [2024-11-14 05:38:46,957 INFO L226 Difference]: Without dead ends: 1474 [2024-11-14 05:38:46,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:38:46,959 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 158 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:46,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 159 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:38:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-11-14 05:38:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 965. [2024-11-14 05:38:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 3.7385892116182573) internal successors, (3604), 964 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3604 transitions. [2024-11-14 05:38:47,102 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3604 transitions. Word has length 25 [2024-11-14 05:38:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:47,103 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 3604 transitions. [2024-11-14 05:38:47,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3604 transitions. [2024-11-14 05:38:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:38:47,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:47,109 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] [2024-11-14 05:38:47,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:47,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:38:47,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-14 05:38:47,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:47,713 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:47,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1198994740, now seen corresponding path program 5 times [2024-11-14 05:38:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442288861] [2024-11-14 05:38:47,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-14 05:38:47,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:47,718 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:47,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-14 05:38:47,884 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:38:47,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:47,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:47,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:48,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:48,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442288861] [2024-11-14 05:38:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442288861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:48,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764477710] [2024-11-14 05:38:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:48,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:38:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:38:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:48,035 INFO L87 Difference]: Start difference. First operand 965 states and 3604 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:48,567 INFO L93 Difference]: Finished difference Result 1280 states and 4653 transitions. [2024-11-14 05:38:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:48,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:38:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:48,579 INFO L225 Difference]: With dead ends: 1280 [2024-11-14 05:38:48,580 INFO L226 Difference]: Without dead ends: 1223 [2024-11-14 05:38:48,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:48,581 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:48,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 43 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:38:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-14 05:38:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 965. [2024-11-14 05:38:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 3.736514522821577) internal successors, (3602), 964 states have internal predecessors, (3602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3602 transitions. [2024-11-14 05:38:48,688 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3602 transitions. Word has length 25 [2024-11-14 05:38:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:48,688 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 3602 transitions. [2024-11-14 05:38:48,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3602 transitions. [2024-11-14 05:38:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:38:48,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:48,692 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] [2024-11-14 05:38:48,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-14 05:38:48,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:48,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:48,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:48,894 INFO L85 PathProgramCache]: Analyzing trace with hash 138216650, now seen corresponding path program 6 times [2024-11-14 05:38:48,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:48,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883946217] [2024-11-14 05:38:48,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-14 05:38:48,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:48,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:48,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-14 05:38:49,071 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-14 05:38:49,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:49,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:49,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:49,203 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:49,204 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:49,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883946217] [2024-11-14 05:38:49,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883946217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:49,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:49,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:49,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809435783] [2024-11-14 05:38:49,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:49,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:38:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:49,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:38:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:49,205 INFO L87 Difference]: Start difference. First operand 965 states and 3602 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:49,766 INFO L93 Difference]: Finished difference Result 1361 states and 4821 transitions. [2024-11-14 05:38:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:49,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-14 05:38:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:49,779 INFO L225 Difference]: With dead ends: 1361 [2024-11-14 05:38:49,780 INFO L226 Difference]: Without dead ends: 1302 [2024-11-14 05:38:49,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:49,782 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:49,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 46 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:38:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-11-14 05:38:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 991. [2024-11-14 05:38:49,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 3.705050505050505) internal successors, (3668), 990 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 3668 transitions. [2024-11-14 05:38:49,913 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 3668 transitions. Word has length 25 [2024-11-14 05:38:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:49,914 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 3668 transitions. [2024-11-14 05:38:49,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 3668 transitions. [2024-11-14 05:38:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:38:49,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:49,918 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, 1] [2024-11-14 05:38:49,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:50,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:50,119 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:50,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1973210707, now seen corresponding path program 1 times [2024-11-14 05:38:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:50,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807121348] [2024-11-14 05:38:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:50,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:50,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:50,121 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:50,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 05:38:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:50,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:38:50,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:50,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:50,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807121348] [2024-11-14 05:38:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807121348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1615455754] [2024-11-14 05:38:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:50,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:50,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:38:50,499 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:38:50,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-14 05:38:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:50,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:50,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:50,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1615455754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838618210] [2024-11-14 05:38:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:51,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:51,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:51,029 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:51,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:38:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:51,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:38:51,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:51,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:51,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838618210] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:51,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:38:51,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5, 5] total 20 [2024-11-14 05:38:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304493272] [2024-11-14 05:38:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:51,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:51,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:51,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:38:51,440 INFO L87 Difference]: Start difference. First operand 991 states and 3668 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:52,108 INFO L93 Difference]: Finished difference Result 1528 states and 5577 transitions. [2024-11-14 05:38:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:38:52,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:38:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:52,120 INFO L225 Difference]: With dead ends: 1528 [2024-11-14 05:38:52,121 INFO L226 Difference]: Without dead ends: 1417 [2024-11-14 05:38:52,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-14 05:38:52,122 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:52,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 27 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:38:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-14 05:38:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 913. [2024-11-14 05:38:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 3.7335526315789473) internal successors, (3405), 912 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 3405 transitions. [2024-11-14 05:38:52,252 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 3405 transitions. Word has length 28 [2024-11-14 05:38:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:52,253 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 3405 transitions. [2024-11-14 05:38:52,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 3405 transitions. [2024-11-14 05:38:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:38:52,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:52,258 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, 1] [2024-11-14 05:38:52,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:52,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-14 05:38:52,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 05:38:52,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:52,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:52,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1707797715, now seen corresponding path program 2 times [2024-11-14 05:38:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157295055] [2024-11-14 05:38:52,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:38:52,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:52,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:52,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:52,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 05:38:53,039 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:38:53,039 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:53,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:38:53,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:53,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:53,456 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:53,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157295055] [2024-11-14 05:38:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157295055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:53,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [340581252] [2024-11-14 05:38:53,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:38:53,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:38:53,461 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:38:53,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-14 05:38:53,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:38:53,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:53,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:38:53,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:53,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [340581252] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:38:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7, 5] total 18 [2024-11-14 05:38:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100948160] [2024-11-14 05:38:53,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:53,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:38:53,982 INFO L87 Difference]: Start difference. First operand 913 states and 3405 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:54,495 INFO L93 Difference]: Finished difference Result 1122 states and 4120 transitions. [2024-11-14 05:38:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:38:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:54,501 INFO L225 Difference]: With dead ends: 1122 [2024-11-14 05:38:54,501 INFO L226 Difference]: Without dead ends: 1080 [2024-11-14 05:38:54,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:38:54,502 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:54,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 16 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:38:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-14 05:38:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 933. [2024-11-14 05:38:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 3.773605150214592) internal successors, (3517), 932 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 3517 transitions. [2024-11-14 05:38:54,613 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 3517 transitions. Word has length 28 [2024-11-14 05:38:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:54,613 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 3517 transitions. [2024-11-14 05:38:54,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 3517 transitions. [2024-11-14 05:38:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:38:54,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:54,617 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, 1] [2024-11-14 05:38:54,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-14 05:38:54,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:55,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:55,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:55,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1047923889, now seen corresponding path program 3 times [2024-11-14 05:38:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242290123] [2024-11-14 05:38:55,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:38:55,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:55,022 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:55,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-14 05:38:55,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:38:55,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:55,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:38:55,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:55,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:38:55,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242290123] [2024-11-14 05:38:55,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242290123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [808717488] [2024-11-14 05:38:55,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:38:55,639 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:55,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:38:55,646 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:38:55,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-14 05:38:55,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:38:55,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:55,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:38:55,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:56,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:38:56,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [808717488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:56,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:38:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 18 [2024-11-14 05:38:56,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223759687] [2024-11-14 05:38:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:56,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:38:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:38:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:38:56,133 INFO L87 Difference]: Start difference. First operand 933 states and 3517 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:56,643 INFO L93 Difference]: Finished difference Result 1197 states and 4604 transitions. [2024-11-14 05:38:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:38:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:56,650 INFO L225 Difference]: With dead ends: 1197 [2024-11-14 05:38:56,650 INFO L226 Difference]: Without dead ends: 1137 [2024-11-14 05:38:56,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:38:56,651 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 57 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:56,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 28 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:38:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2024-11-14 05:38:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 897. [2024-11-14 05:38:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 3.724330357142857) internal successors, (3337), 896 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 3337 transitions. [2024-11-14 05:38:56,786 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 3337 transitions. Word has length 28 [2024-11-14 05:38:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:56,787 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 3337 transitions. [2024-11-14 05:38:56,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 3337 transitions. [2024-11-14 05:38:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:38:56,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:56,791 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, 1] [2024-11-14 05:38:56,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-14 05:38:56,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-14 05:38:57,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:57,192 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:38:57,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1883191203, now seen corresponding path program 4 times [2024-11-14 05:38:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:38:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992428596] [2024-11-14 05:38:57,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:57,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:38:57,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:38:57,195 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:38:57,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-14 05:38:57,283 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:57,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:57,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:38:57,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:57,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:57,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:38:57,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992428596] [2024-11-14 05:38:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992428596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:57,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461494351] [2024-11-14 05:38:57,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:57,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:57,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:38:57,475 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:38:57,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-14 05:38:57,644 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:57,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:57,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:38:57,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:57,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:57,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1461494351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:57,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382683517] [2024-11-14 05:38:57,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:38:57,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:57,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:57,776 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:57,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 05:38:57,888 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:38:57,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:38:57,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:38:57,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:57,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:57,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382683517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:57,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:38:57,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 5, 5] total 13 [2024-11-14 05:38:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986291591] [2024-11-14 05:38:57,960 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:57,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:38:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:38:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:38:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:38:57,961 INFO L87 Difference]: Start difference. First operand 897 states and 3337 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:59,766 INFO L93 Difference]: Finished difference Result 2712 states and 9960 transitions. [2024-11-14 05:38:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 05:38:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:38:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:59,786 INFO L225 Difference]: With dead ends: 2712 [2024-11-14 05:38:59,786 INFO L226 Difference]: Without dead ends: 2653 [2024-11-14 05:38:59,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2024-11-14 05:38:59,788 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 279 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:59,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 110 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:38:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2024-11-14 05:38:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 897. [2024-11-14 05:38:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 3.724330357142857) internal successors, (3337), 896 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 3337 transitions. [2024-11-14 05:38:59,931 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 3337 transitions. Word has length 28 [2024-11-14 05:38:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:59,931 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 3337 transitions. [2024-11-14 05:38:59,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 3337 transitions. [2024-11-14 05:38:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:38:59,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:59,935 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, 1] [2024-11-14 05:38:59,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:00,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-14 05:39:00,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-14 05:39:00,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:00,536 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:00,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 80134051, now seen corresponding path program 5 times [2024-11-14 05:39:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:00,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269547658] [2024-11-14 05:39:00,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-14 05:39:00,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:00,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:00,539 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:00,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-14 05:39:00,742 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:39:00,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:00,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:39:00,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:39:00,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:39:01,192 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269547658] [2024-11-14 05:39:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269547658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1170654149] [2024-11-14 05:39:01,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-14 05:39:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:01,195 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:01,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-14 05:39:01,492 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:39:01,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:01,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:01,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:01,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1170654149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543990024] [2024-11-14 05:39:01,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-14 05:39:01,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:01,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:01,766 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 05:39:02,012 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:39:02,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:02,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:02,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:02,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543990024] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:02,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:39:02,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 8, 5, 5, 5] total 27 [2024-11-14 05:39:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074136455] [2024-11-14 05:39:02,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:02,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:39:02,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:02,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:39:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-11-14 05:39:02,409 INFO L87 Difference]: Start difference. First operand 897 states and 3337 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:03,055 INFO L93 Difference]: Finished difference Result 1425 states and 5167 transitions. [2024-11-14 05:39:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:03,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:39:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:03,065 INFO L225 Difference]: With dead ends: 1425 [2024-11-14 05:39:03,065 INFO L226 Difference]: Without dead ends: 1366 [2024-11-14 05:39:03,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-14 05:39:03,067 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:03,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 18 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:39:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2024-11-14 05:39:03,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 908. [2024-11-14 05:39:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 3.7420066152149944) internal successors, (3394), 907 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 3394 transitions. [2024-11-14 05:39:03,188 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 3394 transitions. Word has length 28 [2024-11-14 05:39:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:03,188 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 3394 transitions. [2024-11-14 05:39:03,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 3394 transitions. [2024-11-14 05:39:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:39:03,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:03,192 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, 1] [2024-11-14 05:39:03,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-14 05:39:03,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 05:39:03,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-14 05:39:03,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:03,796 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:03,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash -863055773, now seen corresponding path program 6 times [2024-11-14 05:39:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:03,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323541475] [2024-11-14 05:39:03,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-14 05:39:03,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:03,799 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:03,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-14 05:39:03,976 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-14 05:39:03,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:03,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:39:03,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:04,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:04,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323541475] [2024-11-14 05:39:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323541475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1850837030] [2024-11-14 05:39:04,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-14 05:39:04,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:04,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:04,360 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:04,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-14 05:39:04,664 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-14 05:39:04,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:04,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:39:04,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:04,774 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:04,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1850837030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:04,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:39:04,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 19 [2024-11-14 05:39:04,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170850070] [2024-11-14 05:39:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:04,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:39:04,776 INFO L87 Difference]: Start difference. First operand 908 states and 3394 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:05,210 INFO L93 Difference]: Finished difference Result 1408 states and 5208 transitions. [2024-11-14 05:39:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:39:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:05,219 INFO L225 Difference]: With dead ends: 1408 [2024-11-14 05:39:05,219 INFO L226 Difference]: Without dead ends: 1338 [2024-11-14 05:39:05,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:39:05,221 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:05,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 19 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:39:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2024-11-14 05:39:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 897. [2024-11-14 05:39:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 3.724330357142857) internal successors, (3337), 896 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 3337 transitions. [2024-11-14 05:39:05,320 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 3337 transitions. Word has length 28 [2024-11-14 05:39:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:05,320 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 3337 transitions. [2024-11-14 05:39:05,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 3337 transitions. [2024-11-14 05:39:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:39:05,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:05,322 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, 1] [2024-11-14 05:39:05,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-14 05:39:05,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-14 05:39:05,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:05,723 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:05,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1823030379, now seen corresponding path program 7 times [2024-11-14 05:39:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571269712] [2024-11-14 05:39:05,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:05,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:05,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:05,727 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:05,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-14 05:39:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:05,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:39:05,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:06,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:06,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571269712] [2024-11-14 05:39:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571269712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1137729222] [2024-11-14 05:39:06,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:06,118 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:06,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:06,119 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:06,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-14 05:39:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:06,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:06,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:06,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1137729222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:06,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358770149] [2024-11-14 05:39:06,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:06,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:06,556 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:06,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:39:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:06,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:06,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:06,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:06,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358770149] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:06,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2024-11-14 05:39:06,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5, 5] total 20 [2024-11-14 05:39:06,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140296837] [2024-11-14 05:39:06,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:06,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:39:06,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:39:06,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:39:06,984 INFO L87 Difference]: Start difference. First operand 897 states and 3337 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:07,478 INFO L93 Difference]: Finished difference Result 1110 states and 4074 transitions. [2024-11-14 05:39:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:39:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:39:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:07,483 INFO L225 Difference]: With dead ends: 1110 [2024-11-14 05:39:07,483 INFO L226 Difference]: Without dead ends: 1068 [2024-11-14 05:39:07,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:39:07,484 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:07,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 9 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-11-14 05:39:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 897. [2024-11-14 05:39:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 3.724330357142857) internal successors, (3337), 896 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 3337 transitions. [2024-11-14 05:39:07,575 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 3337 transitions. Word has length 28 [2024-11-14 05:39:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:07,576 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 3337 transitions. [2024-11-14 05:39:07,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 3337 transitions. [2024-11-14 05:39:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:39:07,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:07,578 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, 1] [2024-11-14 05:39:07,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-14 05:39:07,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-14 05:39:07,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 05:39:08,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:08,179 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:08,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1951876459, now seen corresponding path program 8 times [2024-11-14 05:39:08,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627391499] [2024-11-14 05:39:08,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:39:08,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:08,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:08,182 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:08,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-11-14 05:39:08,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:39:08,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:08,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:08,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:08,497 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:08,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:08,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627391499] [2024-11-14 05:39:08,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627391499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:08,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871938394] [2024-11-14 05:39:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:08,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:08,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:08,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:08,499 INFO L87 Difference]: Start difference. First operand 897 states and 3337 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:09,072 INFO L93 Difference]: Finished difference Result 1575 states and 5916 transitions. [2024-11-14 05:39:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:09,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:39:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:09,081 INFO L225 Difference]: With dead ends: 1575 [2024-11-14 05:39:09,081 INFO L226 Difference]: Without dead ends: 1515 [2024-11-14 05:39:09,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:39:09,082 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:09,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 22 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2024-11-14 05:39:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 877. [2024-11-14 05:39:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 3.6815068493150687) internal successors, (3225), 876 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 3225 transitions. [2024-11-14 05:39:09,195 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 3225 transitions. Word has length 28 [2024-11-14 05:39:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:09,195 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 3225 transitions. [2024-11-14 05:39:09,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 3225 transitions. [2024-11-14 05:39:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:39:09,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:09,198 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, 1] [2024-11-14 05:39:09,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:09,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:09,398 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:09,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash 818540391, now seen corresponding path program 9 times [2024-11-14 05:39:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:09,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314592497] [2024-11-14 05:39:09,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:39:09,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:09,401 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:09,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-14 05:39:09,616 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:39:09,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:09,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:09,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:09,779 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:09,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314592497] [2024-11-14 05:39:09,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314592497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:09,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:09,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:09,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10783185] [2024-11-14 05:39:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:09,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:09,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:09,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:09,781 INFO L87 Difference]: Start difference. First operand 877 states and 3225 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:10,334 INFO L93 Difference]: Finished difference Result 1363 states and 5049 transitions. [2024-11-14 05:39:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:10,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-14 05:39:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:10,342 INFO L225 Difference]: With dead ends: 1363 [2024-11-14 05:39:10,342 INFO L226 Difference]: Without dead ends: 1287 [2024-11-14 05:39:10,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:39:10,344 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:10,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 12 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-11-14 05:39:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 827. [2024-11-14 05:39:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 826 states have (on average 3.711864406779661) internal successors, (3066), 826 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 3066 transitions. [2024-11-14 05:39:10,508 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 3066 transitions. Word has length 28 [2024-11-14 05:39:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:10,509 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 3066 transitions. [2024-11-14 05:39:10,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 3066 transitions. [2024-11-14 05:39:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:39:10,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:10,515 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, 1, 1, 1] [2024-11-14 05:39:10,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2024-11-14 05:39:10,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:10,716 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:10,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash -859231592, now seen corresponding path program 1 times [2024-11-14 05:39:10,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:10,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427986601] [2024-11-14 05:39:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:10,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:10,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:10,718 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:10,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-14 05:39:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:10,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:39:10,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:10,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:10,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:10,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427986601] [2024-11-14 05:39:10,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427986601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:10,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183051070] [2024-11-14 05:39:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:10,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:39:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:39:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:39:10,900 INFO L87 Difference]: Start difference. First operand 827 states and 3066 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:11,376 INFO L93 Difference]: Finished difference Result 1487 states and 5552 transitions. [2024-11-14 05:39:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-14 05:39:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:11,381 INFO L225 Difference]: With dead ends: 1487 [2024-11-14 05:39:11,382 INFO L226 Difference]: Without dead ends: 772 [2024-11-14 05:39:11,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:11,383 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:11,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-14 05:39:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 710. [2024-11-14 05:39:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.6220028208744712) internal successors, (2568), 709 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2568 transitions. [2024-11-14 05:39:11,520 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2568 transitions. Word has length 30 [2024-11-14 05:39:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:11,520 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 2568 transitions. [2024-11-14 05:39:11,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2568 transitions. [2024-11-14 05:39:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:11,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:11,522 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:11,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:11,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:11,722 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:11,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:11,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1005920169, now seen corresponding path program 1 times [2024-11-14 05:39:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062272340] [2024-11-14 05:39:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:11,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:11,724 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:11,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-11-14 05:39:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:11,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:39:11,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:12,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:12,205 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062272340] [2024-11-14 05:39:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062272340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [56577643] [2024-11-14 05:39:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:12,206 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:12,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:12,208 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:12,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-14 05:39:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:12,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:12,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:12,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [56577643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:12,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446892176] [2024-11-14 05:39:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:12,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:12,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:12,786 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:12,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-14 05:39:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:12,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:12,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:13,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:13,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446892176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:13,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 05:39:13,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 14 [2024-11-14 05:39:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339387997] [2024-11-14 05:39:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:13,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:13,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:39:13,058 INFO L87 Difference]: Start difference. First operand 710 states and 2568 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:13,640 INFO L93 Difference]: Finished difference Result 1274 states and 4298 transitions. [2024-11-14 05:39:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:13,647 INFO L225 Difference]: With dead ends: 1274 [2024-11-14 05:39:13,647 INFO L226 Difference]: Without dead ends: 1067 [2024-11-14 05:39:13,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:39:13,649 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:13,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 42 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2024-11-14 05:39:13,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 724. [2024-11-14 05:39:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 3.6141078838174274) internal successors, (2613), 723 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2613 transitions. [2024-11-14 05:39:13,853 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2613 transitions. Word has length 33 [2024-11-14 05:39:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:13,854 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 2613 transitions. [2024-11-14 05:39:13,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2613 transitions. [2024-11-14 05:39:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:13,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:13,856 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:13,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-14 05:39:14,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:14,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2024-11-14 05:39:14,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:14,458 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:14,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1991836147, now seen corresponding path program 2 times [2024-11-14 05:39:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90825719] [2024-11-14 05:39:14,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:39:14,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:14,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:14,460 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:14,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2024-11-14 05:39:14,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:39:14,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:14,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:14,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:14,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:14,782 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:14,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90825719] [2024-11-14 05:39:14,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90825719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:14,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:14,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:14,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019267437] [2024-11-14 05:39:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:14,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:14,783 INFO L87 Difference]: Start difference. First operand 724 states and 2613 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:15,311 INFO L93 Difference]: Finished difference Result 1108 states and 3897 transitions. [2024-11-14 05:39:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:15,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:15,315 INFO L225 Difference]: With dead ends: 1108 [2024-11-14 05:39:15,315 INFO L226 Difference]: Without dead ends: 920 [2024-11-14 05:39:15,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:15,316 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:15,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 41 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-14 05:39:15,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 736. [2024-11-14 05:39:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.6108843537414965) internal successors, (2654), 735 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2654 transitions. [2024-11-14 05:39:15,503 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2654 transitions. Word has length 33 [2024-11-14 05:39:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:15,503 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 2654 transitions. [2024-11-14 05:39:15,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2654 transitions. [2024-11-14 05:39:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:15,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:15,504 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:15,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2024-11-14 05:39:15,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:15,705 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:15,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1062780873, now seen corresponding path program 3 times [2024-11-14 05:39:15,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:15,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466870057] [2024-11-14 05:39:15,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:39:15,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:15,708 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:15,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-14 05:39:15,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:39:15,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:15,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:39:15,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:16,039 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:16,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466870057] [2024-11-14 05:39:16,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466870057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:16,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942780864] [2024-11-14 05:39:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:16,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:16,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:16,041 INFO L87 Difference]: Start difference. First operand 736 states and 2654 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:16,565 INFO L93 Difference]: Finished difference Result 1039 states and 3702 transitions. [2024-11-14 05:39:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:16,571 INFO L225 Difference]: With dead ends: 1039 [2024-11-14 05:39:16,571 INFO L226 Difference]: Without dead ends: 868 [2024-11-14 05:39:16,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:16,575 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:16,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 32 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-11-14 05:39:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 772. [2024-11-14 05:39:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.6057068741893645) internal successors, (2780), 771 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2780 transitions. [2024-11-14 05:39:16,766 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2780 transitions. Word has length 33 [2024-11-14 05:39:16,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:16,767 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 2780 transitions. [2024-11-14 05:39:16,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2780 transitions. [2024-11-14 05:39:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:16,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:16,769 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:16,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-11-14 05:39:16,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:16,974 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:16,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1668247545, now seen corresponding path program 4 times [2024-11-14 05:39:16,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:16,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055496250] [2024-11-14 05:39:16,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:39:16,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:16,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:16,976 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:16,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2024-11-14 05:39:17,111 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:39:17,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:17,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:39:17,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:17,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:17,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055496250] [2024-11-14 05:39:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055496250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:17,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727902143] [2024-11-14 05:39:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:17,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:39:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:39:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:39:17,169 INFO L87 Difference]: Start difference. First operand 772 states and 2780 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:17,764 INFO L93 Difference]: Finished difference Result 1118 states and 4058 transitions. [2024-11-14 05:39:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:17,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:17,768 INFO L225 Difference]: With dead ends: 1118 [2024-11-14 05:39:17,768 INFO L226 Difference]: Without dead ends: 964 [2024-11-14 05:39:17,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:17,770 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:17,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 47 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-14 05:39:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 844. [2024-11-14 05:39:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.6002372479240807) internal successors, (3035), 843 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3035 transitions. [2024-11-14 05:39:17,912 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3035 transitions. Word has length 33 [2024-11-14 05:39:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:17,913 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 3035 transitions. [2024-11-14 05:39:17,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3035 transitions. [2024-11-14 05:39:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:17,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:17,914 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:17,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2024-11-14 05:39:18,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:18,115 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:18,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1882813011, now seen corresponding path program 5 times [2024-11-14 05:39:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625780501] [2024-11-14 05:39:18,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-14 05:39:18,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:18,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:18,119 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:18,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2024-11-14 05:39:18,320 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:39:18,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:18,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:18,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:18,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:18,445 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:18,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625780501] [2024-11-14 05:39:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625780501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:18,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:18,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:39:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793364286] [2024-11-14 05:39:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:18,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:39:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:39:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:18,446 INFO L87 Difference]: Start difference. First operand 844 states and 3035 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:19,097 INFO L93 Difference]: Finished difference Result 1115 states and 3818 transitions. [2024-11-14 05:39:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:19,101 INFO L225 Difference]: With dead ends: 1115 [2024-11-14 05:39:19,101 INFO L226 Difference]: Without dead ends: 927 [2024-11-14 05:39:19,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:39:19,103 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 71 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:19,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 43 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:39:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-14 05:39:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 844. [2024-11-14 05:39:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.586002372479241) internal successors, (3023), 843 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 3023 transitions. [2024-11-14 05:39:19,255 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 3023 transitions. Word has length 33 [2024-11-14 05:39:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:19,255 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 3023 transitions. [2024-11-14 05:39:19,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 3023 transitions. [2024-11-14 05:39:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:19,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:19,257 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:19,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2024-11-14 05:39:19,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:19,457 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:19,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 329275021, now seen corresponding path program 6 times [2024-11-14 05:39:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228627430] [2024-11-14 05:39:19,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-14 05:39:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:19,464 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:19,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-14 05:39:19,684 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-14 05:39:19,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:19,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:39:19,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:19,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:20,102 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228627430] [2024-11-14 05:39:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228627430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:20,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1889619545] [2024-11-14 05:39:20,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-14 05:39:20,103 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:20,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:20,105 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:20,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-14 05:39:20,465 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-14 05:39:20,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:39:20,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:39:20,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:20,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1889619545] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 5] total 19 [2024-11-14 05:39:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374453990] [2024-11-14 05:39:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:20,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:39:20,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:20,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:39:20,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:39:20,702 INFO L87 Difference]: Start difference. First operand 844 states and 3023 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:21,474 INFO L93 Difference]: Finished difference Result 1272 states and 4508 transitions. [2024-11-14 05:39:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:21,477 INFO L225 Difference]: With dead ends: 1272 [2024-11-14 05:39:21,478 INFO L226 Difference]: Without dead ends: 1083 [2024-11-14 05:39:21,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:39:21,479 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:21,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 45 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:39:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-11-14 05:39:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 880. [2024-11-14 05:39:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 3.5824800910125143) internal successors, (3149), 879 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3149 transitions. [2024-11-14 05:39:21,646 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3149 transitions. Word has length 33 [2024-11-14 05:39:21,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:21,646 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 3149 transitions. [2024-11-14 05:39:21,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3149 transitions. [2024-11-14 05:39:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:21,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:21,648 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, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:21,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-11-14 05:39:21,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-14 05:39:22,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:22,048 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:22,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash -78419195, now seen corresponding path program 7 times [2024-11-14 05:39:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082588758] [2024-11-14 05:39:22,049 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:22,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:22,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:22,051 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2024-11-14 05:39:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:22,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:39:22,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:22,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:22,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:22,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082588758] [2024-11-14 05:39:22,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082588758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:22,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1063561688] [2024-11-14 05:39:22,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:22,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:22,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:22,495 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:22,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-14 05:39:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:22,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:22,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:22,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:39:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1063561688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539810685] [2024-11-14 05:39:22,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:39:22,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:22,998 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:23,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-14 05:39:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:23,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:39:23,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:23,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:39:23,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539810685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:23,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:39:23,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 20 [2024-11-14 05:39:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544620358] [2024-11-14 05:39:23,425 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:23,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 05:39:23,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 05:39:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:39:23,426 INFO L87 Difference]: Start difference. First operand 880 states and 3149 transitions. Second operand has 20 states, 20 states have (on average 4.4) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:25,336 INFO L93 Difference]: Finished difference Result 2081 states and 7499 transitions. [2024-11-14 05:39:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:39:25,338 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-14 05:39:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:25,342 INFO L225 Difference]: With dead ends: 2081 [2024-11-14 05:39:25,342 INFO L226 Difference]: Without dead ends: 1062 [2024-11-14 05:39:25,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:39:25,344 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 221 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:25,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 202 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:39:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2024-11-14 05:39:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 823. [2024-11-14 05:39:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 3.519464720194647) internal successors, (2893), 822 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2893 transitions. [2024-11-14 05:39:25,504 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2893 transitions. Word has length 33 [2024-11-14 05:39:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:25,504 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 2893 transitions. [2024-11-14 05:39:25,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.4) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:39:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2893 transitions. [2024-11-14 05:39:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:39:25,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:25,506 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] [2024-11-14 05:39:25,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-14 05:39:25,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2024-11-14 05:39:25,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2024-11-14 05:39:26,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:26,107 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:39:26,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:26,108 INFO L85 PathProgramCache]: Analyzing trace with hash -528472543, now seen corresponding path program 1 times [2024-11-14 05:39:26,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:26,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293897698] [2024-11-14 05:39:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:26,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 05:39:26,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:26,112 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 05:39:26,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8d52f0d-a6fd-4514-9ef9-a5b3af3001a8/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process