./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 01849734 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-0184973-m [2025-04-24 16:59:27,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 16:59:27,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 16:59:27,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 16:59:27,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 16:59:27,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 16:59:27,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 16:59:27,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 16:59:27,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 16:59:27,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 16:59:27,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 16:59:27,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 16:59:27,856 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 16:59:27,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 16:59:27,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 16:59:27,856 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 16:59:27,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 16:59:27,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 16:59:27,857 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 16:59:27,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:59:27,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 16:59:27,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:59:27,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 16:59:27,859 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 16:59:27,859 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 -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux 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 -> GemCutter 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 -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2025-04-24 16:59:28,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 16:59:28,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 16:59:28,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 16:59:28,121 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 16:59:28,121 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 16:59:28,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2025-04-24 16:59:29,457 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c89e00481/a6d2f770f47d4d0381c9b8a632d4993a/FLAG7e644f703 [2025-04-24 16:59:29,609 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 16:59:29,612 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2025-04-24 16:59:29,620 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c89e00481/a6d2f770f47d4d0381c9b8a632d4993a/FLAG7e644f703 [2025-04-24 16:59:30,508 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c89e00481/a6d2f770f47d4d0381c9b8a632d4993a [2025-04-24 16:59:30,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 16:59:30,511 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 16:59:30,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 16:59:30,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 16:59:30,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 16:59:30,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3431832b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30, skipping insertion in model container [2025-04-24 16:59:30,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 16:59:30,681 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3882,3895] [2025-04-24 16:59:30,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:59:30,701 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 16:59:30,737 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3882,3895] [2025-04-24 16:59:30,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 16:59:30,758 INFO L204 MainTranslator]: Completed translation [2025-04-24 16:59:30,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30 WrapperNode [2025-04-24 16:59:30,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 16:59:30,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 16:59:30,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 16:59:30,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 16:59:30,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,803 INFO L138 Inliner]: procedures = 24, calls = 24, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 214 [2025-04-24 16:59:30,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 16:59:30,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 16:59:30,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 16:59:30,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 16:59:30,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,824 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 16:59:30,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 16:59:30,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 16:59:30,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 16:59:30,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (1/1) ... [2025-04-24 16:59:30,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 16:59:30,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:30,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 16:59:30,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 16:59:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 16:59:30,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-24 16:59:30,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-24 16:59:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-24 16:59:30,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-24 16:59:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 16:59:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 16:59:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-24 16:59:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 16:59:30,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 16:59:30,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 16:59:30,887 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 16:59:30,972 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 16:59:30,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 16:59:31,257 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 16:59:31,257 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 16:59:31,558 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 16:59:31,558 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-24 16:59:31,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:59:31 BoogieIcfgContainer [2025-04-24 16:59:31,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 16:59:31,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 16:59:31,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 16:59:31,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 16:59:31,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 04:59:30" (1/3) ... [2025-04-24 16:59:31,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246c222c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:59:31, skipping insertion in model container [2025-04-24 16:59:31,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 04:59:30" (2/3) ... [2025-04-24 16:59:31,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246c222c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 04:59:31, skipping insertion in model container [2025-04-24 16:59:31,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:59:31" (3/3) ... [2025-04-24 16:59:31,570 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2025-04-24 16:59:31,584 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 16:59:31,587 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-symm.wvr.c that has 3 procedures, 22 locations, 24 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-24 16:59:31,588 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 16:59:31,643 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-24 16:59:31,679 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:59:31,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 16:59:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:31,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 16:59:31,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 16:59:31,754 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 16:59:31,780 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 16:59:31,788 INFO L340 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=PARTIAL_ORDER_FA, 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;@4b2f1774, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 16:59:31,789 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-24 16:59:31,842 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:31,843 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:31,843 INFO L139 ounterexampleChecker]: Examining path program with hash 1106033058, occurence #1 [2025-04-24 16:59:31,843 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:59:31,843 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:31,847 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash -567907863, now seen corresponding path program 1 times [2025-04-24 16:59:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:31,853 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749661372] [2025-04-24 16:59:31,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:59:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:31,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-24 16:59:31,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-24 16:59:31,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:31,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:59:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:32,156 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749661372] [2025-04-24 16:59:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749661372] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:59:32,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:59:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 16:59:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143727763] [2025-04-24 16:59:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:59:32,160 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 16:59:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:32,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 16:59:32,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 16:59:32,176 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:32,177 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:32,178 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2025-04-24 16:59:32,178 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:32,227 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:32,227 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 16:59:32,227 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:32,227 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:32,228 INFO L139 ounterexampleChecker]: Examining path program with hash 1557237810, occurence #1 [2025-04-24 16:59:32,228 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:59:32,228 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:32,228 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1635203435, now seen corresponding path program 1 times [2025-04-24 16:59:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:32,228 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283506512] [2025-04-24 16:59:32,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:59:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:32,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-24 16:59:32,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-24 16:59:32,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:32,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:59:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:32,399 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283506512] [2025-04-24 16:59:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283506512] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:32,399 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726761189] [2025-04-24 16:59:32,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:59:32,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:32,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:32,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:32,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 16:59:32,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-24 16:59:32,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-24 16:59:32,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:32,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:32,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 16:59:32,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:59:32,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:59:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726761189] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:32,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:32,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-04-24 16:59:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681059925] [2025-04-24 16:59:32,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:32,546 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-24 16:59:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:32,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-24 16:59:32,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-04-24 16:59:32,546 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:32,546 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:32,546 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2025-04-24 16:59:32,546 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:32,547 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:32,636 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:32,637 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:32,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-24 16:59:32,841 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-04-24 16:59:32,841 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:32,841 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:32,841 INFO L139 ounterexampleChecker]: Examining path program with hash 1557237810, occurence #2 [2025-04-24 16:59:32,841 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:32,841 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:32,845 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:32,845 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:32,845 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:32,845 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-04-24 16:59:32,845 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:32,845 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2025-04-24 16:59:32,845 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:32,845 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 18 [2025-04-24 16:59:32,845 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:32,845 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:32,845 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:32,846 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash -774969301, now seen corresponding path program 2 times [2025-04-24 16:59:32,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:32,846 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426242870] [2025-04-24 16:59:32,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:59:32,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:32,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-24 16:59:32,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 21 statements. [2025-04-24 16:59:32,893 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-24 16:59:32,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:33,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:33,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426242870] [2025-04-24 16:59:33,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426242870] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:59:33,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:59:33,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-24 16:59:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104152817] [2025-04-24 16:59:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:59:33,284 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 16:59:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:33,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 16:59:33,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-24 16:59:33,285 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:33,285 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:33,285 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2025-04-24 16:59:33,285 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:33,286 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,286 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:33,419 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:33,419 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,419 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,420 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 16:59:33,420 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:33,420 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:33,420 INFO L139 ounterexampleChecker]: Examining path program with hash 1948260846, occurence #1 [2025-04-24 16:59:33,420 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:59:33,420 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:33,420 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 836996624, now seen corresponding path program 1 times [2025-04-24 16:59:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:33,421 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65730107] [2025-04-24 16:59:33,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:59:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:33,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-24 16:59:33,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-24 16:59:33,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:33,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:33,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:33,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65730107] [2025-04-24 16:59:33,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65730107] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:59:33,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 16:59:33,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-24 16:59:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255446523] [2025-04-24 16:59:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:59:33,541 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 16:59:33,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:33,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 16:59:33,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-24 16:59:33,542 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:33,542 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:33,542 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2025-04-24 16:59:33,542 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:33,542 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,542 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,542 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:33,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:33,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:33,630 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-24 16:59:33,630 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:33,630 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:33,631 INFO L139 ounterexampleChecker]: Examining path program with hash 972392804, occurence #1 [2025-04-24 16:59:33,631 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 16:59:33,631 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:33,631 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:33,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1871058959, now seen corresponding path program 1 times [2025-04-24 16:59:33,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:33,631 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607287310] [2025-04-24 16:59:33,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:59:33,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:33,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 16:59:33,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 16:59:33,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:33,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:34,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:34,568 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607287310] [2025-04-24 16:59:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607287310] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:34,568 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936254536] [2025-04-24 16:59:34,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 16:59:34,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:34,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:34,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-24 16:59:34,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 16:59:34,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 16:59:34,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:34,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:34,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-24 16:59:34,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:35,022 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 132 [2025-04-24 16:59:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:35,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:36,841 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 16:59:36,842 INFO L354 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 298 treesize of output 194 [2025-04-24 16:59:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:37,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936254536] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:37,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2025-04-24 16:59:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577691956] [2025-04-24 16:59:37,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:37,123 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-24 16:59:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:37,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-24 16:59:37,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-04-24 16:59:37,124 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:37,124 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:37,124 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 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) [2025-04-24 16:59:37,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:37,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:37,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:37,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:37,124 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:37,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:37,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:37,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:37,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:37,830 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:59:37,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-24 16:59:38,030 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:38,031 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:38,031 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:38,031 INFO L139 ounterexampleChecker]: Examining path program with hash 1948260846, occurence #2 [2025-04-24 16:59:38,031 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:38,031 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:38,031 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:38,031 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:38,031 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:38,031 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 18 [2025-04-24 16:59:38,031 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:38,031 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2025-04-24 16:59:38,031 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:38,031 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-04-24 16:59:38,031 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:38,031 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:38,031 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:38,032 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash -238177194, now seen corresponding path program 2 times [2025-04-24 16:59:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:38,032 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427830329] [2025-04-24 16:59:38,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:59:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:38,040 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-24 16:59:38,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-24 16:59:38,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 16:59:38,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:38,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427830329] [2025-04-24 16:59:38,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427830329] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:38,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768635385] [2025-04-24 16:59:38,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:59:38,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:38,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:38,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:38,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-24 16:59:38,487 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-24 16:59:38,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-24 16:59:38,510 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 16:59:38,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:38,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-24 16:59:38,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:38,715 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 72 [2025-04-24 16:59:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:38,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:38,895 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 16:59:38,896 INFO L354 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 54 treesize of output 30 [2025-04-24 16:59:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:38,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768635385] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:38,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:38,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2025-04-24 16:59:38,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071254396] [2025-04-24 16:59:38,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:38,970 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-24 16:59:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:38,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-24 16:59:38,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-04-24 16:59:38,971 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:38,971 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:38,971 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2025-04-24 16:59:38,971 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:38,971 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:38,971 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:38,971 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:38,971 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 16:59:38,971 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:39,479 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:39,479 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:39,479 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:39,479 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:39,479 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:39,480 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:39,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-24 16:59:39,684 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:39,684 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:39,684 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:39,684 INFO L139 ounterexampleChecker]: Examining path program with hash 972392804, occurence #2 [2025-04-24 16:59:39,684 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:39,684 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:39,684 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:39,684 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:39,684 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:39,684 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2025-04-24 16:59:39,684 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:39,684 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-04-24 16:59:39,684 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:39,684 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-04-24 16:59:39,685 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:39,685 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:39,685 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:39,685 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash -25979721, now seen corresponding path program 3 times [2025-04-24 16:59:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:39,685 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039981911] [2025-04-24 16:59:39,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 16:59:39,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:39,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-04-24 16:59:39,735 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-04-24 16:59:39,735 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-24 16:59:39,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:40,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:40,373 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039981911] [2025-04-24 16:59:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039981911] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:40,373 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731135487] [2025-04-24 16:59:40,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 16:59:40,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:40,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:40,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-24 16:59:40,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-04-24 16:59:40,449 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-04-24 16:59:40,449 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-24 16:59:40,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:40,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-04-24 16:59:40,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:40,488 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-24 16:59:40,506 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-24 16:59:40,782 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 90 [2025-04-24 16:59:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 16:59:40,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:43,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731135487] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:43,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:43,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 10] total 29 [2025-04-24 16:59:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350436091] [2025-04-24 16:59:43,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:43,106 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-24 16:59:43,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:43,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-24 16:59:43,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2025-04-24 16:59:43,107 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:43,107 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:43,107 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 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) [2025-04-24 16:59:43,107 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:43,107 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:43,107 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:43,107 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:43,108 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:43,108 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:43,108 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:44,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:44,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:44,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:44,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:44,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:44,613 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:44,614 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-24 16:59:44,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-24 16:59:44,817 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-04-24 16:59:44,817 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:44,817 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:44,817 INFO L139 ounterexampleChecker]: Examining path program with hash 972392804, occurence #3 [2025-04-24 16:59:44,817 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:44,817 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:44,818 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:44,818 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:44,818 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:44,818 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2025-04-24 16:59:44,818 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:44,818 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-04-24 16:59:44,818 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:44,818 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-04-24 16:59:44,818 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:44,818 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-04-24 16:59:44,818 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:44,818 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:44,818 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:44,818 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1656732186, now seen corresponding path program 4 times [2025-04-24 16:59:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:44,818 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528190944] [2025-04-24 16:59:44,818 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 16:59:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:44,827 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-24 16:59:44,859 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-24 16:59:44,859 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 16:59:44,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 16:59:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:45,338 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528190944] [2025-04-24 16:59:45,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528190944] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:45,339 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198054841] [2025-04-24 16:59:45,339 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 16:59:45,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:45,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:45,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:45,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-24 16:59:45,389 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-24 16:59:45,414 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-24 16:59:45,415 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 16:59:45,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:45,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-24 16:59:45,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:45,593 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 72 [2025-04-24 16:59:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-24 16:59:45,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:45,723 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 16:59:45,724 INFO L354 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 87 treesize of output 47 [2025-04-24 16:59:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:45,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198054841] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:45,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:45,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2025-04-24 16:59:45,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053412690] [2025-04-24 16:59:45,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:45,842 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-24 16:59:45,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:45,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-24 16:59:45,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2025-04-24 16:59:45,843 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:45,843 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:45,843 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 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) [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2025-04-24 16:59:45,843 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:46,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-24 16:59:46,441 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-24 16:59:46,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-24 16:59:46,641 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:46,641 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:46,641 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:46,641 INFO L139 ounterexampleChecker]: Examining path program with hash 1948260846, occurence #3 [2025-04-24 16:59:46,641 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:46,641 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:46,642 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:46,642 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:46,642 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:46,642 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 22 [2025-04-24 16:59:46,642 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:46,642 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2025-04-24 16:59:46,642 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:46,642 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 27 [2025-04-24 16:59:46,642 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:46,642 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:46,642 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:46,642 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash -938522724, now seen corresponding path program 5 times [2025-04-24 16:59:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:46,642 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778044832] [2025-04-24 16:59:46,642 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 16:59:46,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:46,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-24 16:59:46,670 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-24 16:59:46,671 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-24 16:59:46,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 16:59:47,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:47,008 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778044832] [2025-04-24 16:59:47,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778044832] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:47,008 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954104094] [2025-04-24 16:59:47,008 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 16:59:47,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:47,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:47,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-24 16:59:47,063 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-24 16:59:47,090 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-24 16:59:47,090 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-24 16:59:47,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:47,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-24 16:59:47,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:47,233 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 59 [2025-04-24 16:59:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:47,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:47,408 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 16:59:47,408 INFO L354 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 51 treesize of output 27 [2025-04-24 16:59:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:47,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954104094] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:47,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:47,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2025-04-24 16:59:47,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569993688] [2025-04-24 16:59:47,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:47,515 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-24 16:59:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:47,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-24 16:59:47,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2025-04-24 16:59:47,516 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:47,516 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:47,516 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 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) [2025-04-24 16:59:47,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:47,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:47,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:47,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:47,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:47,516 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:47,517 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-04-24 16:59:47,517 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2025-04-24 16:59:47,517 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:48,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:48,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:48,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:48,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:48,406 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:48,406 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:48,406 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:48,406 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:48,406 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:48,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-24 16:59:48,606 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-04-24 16:59:48,607 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:48,607 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:48,607 INFO L139 ounterexampleChecker]: Examining path program with hash 972392804, occurence #4 [2025-04-24 16:59:48,607 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:48,607 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:48,607 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:48,607 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:48,608 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:48,608 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-04-24 16:59:48,608 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:48,608 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-04-24 16:59:48,608 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:48,608 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 30 [2025-04-24 16:59:48,608 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:48,608 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:48,608 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:48,608 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1251831421, now seen corresponding path program 6 times [2025-04-24 16:59:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:48,608 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750714584] [2025-04-24 16:59:48,609 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-24 16:59:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:48,615 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 4 equivalence classes. [2025-04-24 16:59:48,661 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 33 of 33 statements. [2025-04-24 16:59:48,661 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-24 16:59:48,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-24 16:59:49,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:49,797 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750714584] [2025-04-24 16:59:49,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750714584] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:49,797 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806007410] [2025-04-24 16:59:49,797 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-24 16:59:49,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:49,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:49,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:49,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-24 16:59:49,851 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 4 equivalence classes. [2025-04-24 16:59:49,888 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 33 of 33 statements. [2025-04-24 16:59:49,888 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-24 16:59:49,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:49,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-24 16:59:49,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:50,241 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 131 [2025-04-24 16:59:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 16:59:50,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 16:59:51,497 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 16:59:51,497 INFO L354 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 275 treesize of output 179 [2025-04-24 16:59:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806007410] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 16:59:51,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 16:59:51,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 13] total 42 [2025-04-24 16:59:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374390455] [2025-04-24 16:59:51,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 16:59:51,848 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-04-24 16:59:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:51,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-04-24 16:59:51,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2025-04-24 16:59:51,849 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:51,849 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:51,849 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.142857142857143) internal successors, (90), 42 states have internal predecessors, (90), 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) [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:51,849 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:53,183 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-24 16:59:53,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-24 16:59:53,383 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:53,384 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:53,384 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:53,384 INFO L139 ounterexampleChecker]: Examining path program with hash 972392804, occurence #5 [2025-04-24 16:59:53,384 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:53,384 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:53,384 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-04-24 16:59:53,384 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-04-24 16:59:53,384 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 30 [2025-04-24 16:59:53,384 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 32 [2025-04-24 16:59:53,384 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:53,384 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 34 [2025-04-24 16:59:53,384 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:53,384 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:53,384 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:53,385 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -250373757, now seen corresponding path program 7 times [2025-04-24 16:59:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:53,385 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961351990] [2025-04-24 16:59:53,385 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-24 16:59:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:53,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-24 16:59:53,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-24 16:59:53,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:53,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:53,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:53,480 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961351990] [2025-04-24 16:59:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961351990] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:53,481 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53896120] [2025-04-24 16:59:53,481 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-24 16:59:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:53,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:53,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-24 16:59:53,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-24 16:59:53,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-24 16:59:53,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 16:59:53,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:53,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 16:59:53,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-24 16:59:53,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:59:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53896120] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:59:53,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-24 16:59:53,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2025-04-24 16:59:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118475666] [2025-04-24 16:59:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:59:53,592 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 16:59:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:53,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 16:59:53,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-04-24 16:59:53,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:53,594 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:53,594 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 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) [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:53,594 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2025-04-24 16:59:53,595 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2025-04-24 16:59:53,595 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:54,216 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:59:54,217 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 16:59:54,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-24 16:59:54,419 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:54,419 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 16:59:54,419 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 16:59:54,419 INFO L139 ounterexampleChecker]: Examining path program with hash 1948260846, occurence #4 [2025-04-24 16:59:54,419 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 16:59:54,419 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-04-24 16:59:54,419 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:54,419 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-24 16:59:54,419 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:54,420 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-04-24 16:59:54,420 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:54,420 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2025-04-24 16:59:54,420 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 16:59:54,420 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 31 [2025-04-24 16:59:54,420 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 16:59:54,420 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 16:59:54,420 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 16:59:54,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 16:59:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1322661918, now seen corresponding path program 8 times [2025-04-24 16:59:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 16:59:54,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271197407] [2025-04-24 16:59:54,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:59:54,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 16:59:54,433 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-24 16:59:54,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-24 16:59:54,444 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 16:59:54,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:54,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 16:59:54,500 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271197407] [2025-04-24 16:59:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271197407] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 16:59:54,500 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779727487] [2025-04-24 16:59:54,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 16:59:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 16:59:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 16:59:54,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 16:59:54,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-24 16:59:54,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-24 16:59:54,583 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-24 16:59:54,583 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 16:59:54,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 16:59:54,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 16:59:54,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 16:59:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-24 16:59:54,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 16:59:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779727487] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 16:59:54,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-24 16:59:54,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2025-04-24 16:59:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462826877] [2025-04-24 16:59:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 16:59:54,609 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 16:59:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 16:59:54,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 16:59:54,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-24 16:59:54,611 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:54,612 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 16:59:54,612 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-24 16:59:54,612 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-24 16:59:56,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 16:59:56,071 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 16:59:56,071 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 16:59:56,073 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-24 16:59:56,073 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-24 16:59:56,073 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-24 16:59:56,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-24 16:59:56,277 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-24 16:59:56,281 INFO L422 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1] [2025-04-24 16:59:56,283 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 16:59:56,283 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 16:59:56,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-24 16:59:56,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 04:59:56 BasicIcfg [2025-04-24 16:59:56,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 16:59:56,291 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 16:59:56,291 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 16:59:56,292 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 16:59:56,292 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 04:59:31" (3/4) ... [2025-04-24 16:59:56,294 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-24 16:59:56,296 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-04-24 16:59:56,296 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-04-24 16:59:56,300 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 112 nodes and edges [2025-04-24 16:59:56,300 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-04-24 16:59:56,301 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-24 16:59:56,301 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-24 16:59:56,375 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-24 16:59:56,375 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-24 16:59:56,375 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 16:59:56,376 INFO L158 Benchmark]: Toolchain (without parser) took 25864.41ms. Allocated memory was 83.9MB in the beginning and 604.0MB in the end (delta: 520.1MB). Free memory was 59.5MB in the beginning and 477.9MB in the end (delta: -418.4MB). Peak memory consumption was 101.2MB. Max. memory is 16.1GB. [2025-04-24 16:59:56,376 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 62.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:59:56,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.65ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 44.6MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-24 16:59:56,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.61ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 42.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:59:56,377 INFO L158 Benchmark]: Boogie Preprocessor took 26.06ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 16:59:56,377 INFO L158 Benchmark]: RCFGBuilder took 725.77ms. Allocated memory is still 83.9MB. Free memory was 40.6MB in the beginning and 37.9MB in the end (delta: 2.7MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2025-04-24 16:59:56,377 INFO L158 Benchmark]: TraceAbstraction took 24730.50ms. Allocated memory was 83.9MB in the beginning and 604.0MB in the end (delta: 520.1MB). Free memory was 37.4MB in the beginning and 487.8MB in the end (delta: -450.4MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2025-04-24 16:59:56,377 INFO L158 Benchmark]: Witness Printer took 83.70ms. Allocated memory is still 604.0MB. Free memory was 487.8MB in the beginning and 477.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 16:59:56,378 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 62.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.65ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 44.6MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.61ms. Allocated memory is still 83.9MB. Free memory was 44.6MB in the beginning and 42.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.06ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 725.77ms. Allocated memory is still 83.9MB. Free memory was 40.6MB in the beginning and 37.9MB in the end (delta: 2.7MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * TraceAbstraction took 24730.50ms. Allocated memory was 83.9MB in the beginning and 604.0MB in the end (delta: 520.1MB). Free memory was 37.4MB in the beginning and 487.8MB in the end (delta: -450.4MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. * Witness Printer took 83.70ms. Allocated memory is still 604.0MB. Free memory was 487.8MB in the beginning and 477.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1667, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 551, dependent conditional: 549, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 220, independent: 218, independent conditional: 0, independent unconditional: 218, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 220, independent: 216, independent conditional: 0, independent unconditional: 216, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 4, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 1118, independent: 898, independent conditional: 0, independent unconditional: 898, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 220, unknown conditional: 0, unknown unconditional: 220] , Statistics on independence cache: Total cache size (in pairs): 220, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 858, Maximal queried relation: 0, Independence queries for same thread: 549, Persistent sets #1 benchmarks: Persistent set computation time: 0.0s, Number of persistent set computation: 54, Number of trivial persistent sets: 42, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 260, independent: 258, independent conditional: 0, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1667, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 551, dependent conditional: 549, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 858, independent unconditional: 258, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1118, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 220, independent: 218, independent conditional: 0, independent unconditional: 218, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 220, independent: 216, independent conditional: 0, independent unconditional: 216, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 4, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 1118, independent: 898, independent conditional: 0, independent unconditional: 898, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 220, unknown conditional: 0, unknown unconditional: 220] , Statistics on independence cache: Total cache size (in pairs): 220, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 858, Maximal queried relation: 0, Independence queries for same thread: 549 - PositiveResult [Line: 113]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 34 locations, 42 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 24.5s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 8, EmptinessCheckTime: 8.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 594 NumberOfCodeBlocks, 591 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 761 ConstructedInterpolants, 0 QuantifiedInterpolants, 12614 SizeOfPredicates, 155 NumberOfNonLiveVariables, 2024 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 28 InterpolantComputations, 5 PerfectInterpolantSequences, 205/405 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 3, ConditionCalculationTime [ms]: 0, ConditionCalculations: 19, QuantifiedConditions: 0, TraceChecks: 0, UnknownTraceChecks: 0, UnsatisfiedConditions: 0, ImperfectProofs: 0 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-24 16:59:56,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE