./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 42d87675 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/pthread-deagle/circular_buffer_ok.i -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 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-24 23:38:33,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 23:38:33,316 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 23:38:33,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 23:38:33,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 23:38:33,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 23:38:33,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 23:38:33,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 23:38:33,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 23:38:33,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 23:38:33,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 23:38:33,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 23:38:33,346 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 23:38:33,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 23:38:33,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 23:38:33,347 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 23:38:33,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 23:38:33,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 23:38:33,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 23:38:33,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 23:38:33,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 23:38:33,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 23:38:33,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 23:38:33,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 23:38:33,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 23:38:33,349 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 23:38:33,349 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 -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE [2025-04-24 23:38:33,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 23:38:33,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 23:38:33,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 23:38:33,568 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 23:38:33,568 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 23:38:33,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2025-04-24 23:38:34,867 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/34e9cf5de/9a3f317c487047b0ad9e6b96afd646ff/FLAG6d8f6e16d [2025-04-24 23:38:35,081 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 23:38:35,082 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2025-04-24 23:38:35,091 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/34e9cf5de/9a3f317c487047b0ad9e6b96afd646ff/FLAG6d8f6e16d [2025-04-24 23:38:35,868 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/34e9cf5de/9a3f317c487047b0ad9e6b96afd646ff [2025-04-24 23:38:35,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 23:38:35,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 23:38:35,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 23:38:35,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 23:38:35,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 23:38:35,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 11:38:35" (1/1) ... [2025-04-24 23:38:35,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ba8f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:35, skipping insertion in model container [2025-04-24 23:38:35,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 11:38:35" (1/1) ... [2025-04-24 23:38:35,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 23:38:36,103 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/pthread-deagle/circular_buffer_ok.i[30451,30464] [2025-04-24 23:38:36,109 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/pthread-deagle/circular_buffer_ok.i[30681,30694] [2025-04-24 23:38:36,112 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/pthread-deagle/circular_buffer_ok.i[30979,30992] [2025-04-24 23:38:36,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 23:38:36,126 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 23:38:36,188 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/pthread-deagle/circular_buffer_ok.i[30451,30464] [2025-04-24 23:38:36,189 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/pthread-deagle/circular_buffer_ok.i[30681,30694] [2025-04-24 23:38:36,190 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/pthread-deagle/circular_buffer_ok.i[30979,30992] [2025-04-24 23:38:36,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 23:38:36,216 INFO L204 MainTranslator]: Completed translation [2025-04-24 23:38:36,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36 WrapperNode [2025-04-24 23:38:36,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 23:38:36,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 23:38:36,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 23:38:36,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 23:38:36,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,252 INFO L138 Inliner]: procedures = 168, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2025-04-24 23:38:36,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 23:38:36,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 23:38:36,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 23:38:36,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 23:38:36,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,269 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 23:38:36,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 23:38:36,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 23:38:36,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 23:38:36,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (1/1) ... [2025-04-24 23:38:36,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 23:38:36,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 23:38:36,307 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 23:38:36,309 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 23:38:36,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-24 23:38:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-24 23:38:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 23:38:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 23:38:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 23:38:36,325 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 23:38:36,421 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 23:38:36,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 23:38:36,593 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 23:38:36,593 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 23:38:36,715 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 23:38:36,715 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 23:38:36,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 11:38:36 BoogieIcfgContainer [2025-04-24 23:38:36,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 23:38:36,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 23:38:36,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 23:38:36,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 23:38:36,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 11:38:35" (1/3) ... [2025-04-24 23:38:36,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448fcf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 11:38:36, skipping insertion in model container [2025-04-24 23:38:36,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 11:38:36" (2/3) ... [2025-04-24 23:38:36,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448fcf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 11:38:36, skipping insertion in model container [2025-04-24 23:38:36,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 11:38:36" (3/3) ... [2025-04-24 23:38:36,725 INFO L128 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2025-04-24 23:38:36,733 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 23:38:36,735 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_ok.i that has 3 procedures, 39 locations, 44 edges, 1 initial locations, 2 loop locations, and 3 error locations. [2025-04-24 23:38:36,735 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 23:38:36,792 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-24 23:38:36,823 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 23:38:36,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 23:38:36,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 23:38:36,826 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 23:38:36,828 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 23:38:36,889 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 23:38:36,896 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork0 ======== [2025-04-24 23:38:36,901 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;@86d8c73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 23:38:36,901 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-24 23:38:37,018 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:37,021 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1578472281, now seen corresponding path program 1 times [2025-04-24 23:38:37,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:37,027 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412587012] [2025-04-24 23:38:37,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:37,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-24 23:38:37,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-24 23:38:37,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:37,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:37,230 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 23:38:37,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:37,231 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412587012] [2025-04-24 23:38:37,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412587012] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:37,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:37,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534449990] [2025-04-24 23:38:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:37,237 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:37,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:37,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:37,251 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,252 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:37,253 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 23:38:37,253 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,342 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,343 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 23:38:37,343 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:37,343 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1689638260, now seen corresponding path program 1 times [2025-04-24 23:38:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:37,344 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856189285] [2025-04-24 23:38:37,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:37,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-04-24 23:38:37,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-04-24 23:38:37,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:37,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-24 23:38:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:37,473 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856189285] [2025-04-24 23:38:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856189285] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:37,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103884156] [2025-04-24 23:38:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:37,474 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:37,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:37,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:37,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:37,476 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,476 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:37,476 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 23:38:37,477 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,477 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,562 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,562 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,562 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 23:38:37,562 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:37,563 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:37,563 INFO L85 PathProgramCache]: Analyzing trace with hash 634199514, now seen corresponding path program 1 times [2025-04-24 23:38:37,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:37,563 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936163973] [2025-04-24 23:38:37,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:37,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:37,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-24 23:38:37,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-24 23:38:37,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:37,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:37,735 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 23:38:37,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:37,735 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936163973] [2025-04-24 23:38:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936163973] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-24 23:38:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113999081] [2025-04-24 23:38:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:37,736 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 23:38:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:37,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 23:38:37,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-24 23:38:37,736 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,736 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:37,736 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 23:38:37,737 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,737 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,737 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,828 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:37,829 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 23:38:37,830 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:37,831 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash -280031664, now seen corresponding path program 1 times [2025-04-24 23:38:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:37,831 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920355602] [2025-04-24 23:38:37,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:37,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:37,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-24 23:38:37,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-24 23:38:37,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:37,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:37,965 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 23:38:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:37,966 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920355602] [2025-04-24 23:38:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920355602] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:37,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 23:38:37,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186299523] [2025-04-24 23:38:37,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:37,966 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:37,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:37,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:37,967 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:37,967 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:37,967 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 23:38:37,967 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,967 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:37,967 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:37,967 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,101 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,101 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,102 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,102 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,102 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-24 23:38:38,102 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:38,102 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash -283915796, now seen corresponding path program 1 times [2025-04-24 23:38:38,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:38,102 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670149618] [2025-04-24 23:38:38,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:38,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:38,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-04-24 23:38:38,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-04-24 23:38:38,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:38,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-24 23:38:38,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:38,271 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670149618] [2025-04-24 23:38:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670149618] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:38,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:38,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:38,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743097018] [2025-04-24 23:38:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:38,273 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 23:38:38,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:38,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 23:38:38,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-24 23:38:38,273 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,273 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:38,273 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 23:38:38,273 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,273 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,273 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,273 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,273 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,320 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,320 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,320 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,320 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,321 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,321 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-24 23:38:38,321 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:38,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -794371518, now seen corresponding path program 1 times [2025-04-24 23:38:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:38,322 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167512729] [2025-04-24 23:38:38,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:38,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-04-24 23:38:38,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-04-24 23:38:38,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:38,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-24 23:38:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:38,543 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167512729] [2025-04-24 23:38:38,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167512729] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:38,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:38,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:38,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184449801] [2025-04-24 23:38:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:38,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:38,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:38,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:38,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:38,544 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,544 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:38,544 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 23:38:38,544 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,544 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,544 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,544 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,544 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,544 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,595 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,595 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-24 23:38:38,595 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:38,596 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash 132224063, now seen corresponding path program 2 times [2025-04-24 23:38:38,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:38,596 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234996320] [2025-04-24 23:38:38,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 23:38:38,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:38,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-04-24 23:38:38,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 37 statements. [2025-04-24 23:38:38,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-24 23:38:38,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-24 23:38:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:38,659 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234996320] [2025-04-24 23:38:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234996320] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:38,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-24 23:38:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363305525] [2025-04-24 23:38:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:38,660 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 23:38:38,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:38,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 23:38:38,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-24 23:38:38,661 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,661 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:38,661 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,661 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:38,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,804 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,805 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 23:38:38,807 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-04-24 23:38:38,807 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-04-24 23:38:38,807 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-24 23:38:38,812 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2025-04-24 23:38:38,814 INFO L320 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE,SAFE (1/3) [2025-04-24 23:38:38,816 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 23:38:38,818 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 23:38:38,818 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 23:38:38,818 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;@86d8c73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 23:38:38,818 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-24 23:38:38,820 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2025-04-24 23:38:38,821 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-04-24 23:38:38,821 INFO L422 BasicCegarLoop]: Path program histogram: [] [2025-04-24 23:38:38,822 INFO L320 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (2/3) [2025-04-24 23:38:38,823 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 23:38:38,824 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 23:38:38,825 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork1 ======== [2025-04-24 23:38:38,825 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;@86d8c73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 23:38:38,825 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 23:38:38,844 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:38,845 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1461160721, now seen corresponding path program 1 times [2025-04-24 23:38:38,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:38,845 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847495494] [2025-04-24 23:38:38,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:38,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:38,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-24 23:38:38,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-24 23:38:38,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:38,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:38,894 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 23:38:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:38,894 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847495494] [2025-04-24 23:38:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847495494] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 23:38:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382240897] [2025-04-24 23:38:38,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:38,895 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:38,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:38,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:38,895 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,895 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:38,895 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 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 23:38:38,896 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:38,966 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:38,966 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-24 23:38:38,966 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:38,967 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:38,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1260469660, now seen corresponding path program 1 times [2025-04-24 23:38:38,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:38,967 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314122969] [2025-04-24 23:38:38,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:38,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-04-24 23:38:38,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-04-24 23:38:38,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:38,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-04-24 23:38:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:39,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314122969] [2025-04-24 23:38:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314122969] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:39,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:39,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024585404] [2025-04-24 23:38:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:39,086 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:39,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:39,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:39,087 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,087 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:39,087 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 23:38:39,088 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,088 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,134 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,134 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,134 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-24 23:38:39,134 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:39,135 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -880604057, now seen corresponding path program 1 times [2025-04-24 23:38:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:39,135 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992372596] [2025-04-24 23:38:39,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:39,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:39,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-04-24 23:38:39,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-04-24 23:38:39,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:39,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-24 23:38:39,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:39,187 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992372596] [2025-04-24 23:38:39,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992372596] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:39,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:39,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138299441] [2025-04-24 23:38:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:39,188 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:39,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:39,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:39,189 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,189 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:39,189 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 23:38:39,189 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,189 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,189 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,245 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,246 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,246 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,247 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-24 23:38:39,247 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:39,247 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:39,247 INFO L85 PathProgramCache]: Analyzing trace with hash -633256186, now seen corresponding path program 1 times [2025-04-24 23:38:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:39,247 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180139050] [2025-04-24 23:38:39,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:39,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:39,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-24 23:38:39,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-24 23:38:39,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:39,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-24 23:38:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:39,296 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180139050] [2025-04-24 23:38:39,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180139050] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:39,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:39,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:39,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122865116] [2025-04-24 23:38:39,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:39,297 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 23:38:39,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:39,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 23:38:39,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 23:38:39,297 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,297 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:39,297 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 23:38:39,298 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,298 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,298 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,298 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,346 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,346 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-24 23:38:39,346 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:39,346 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1696723238, now seen corresponding path program 1 times [2025-04-24 23:38:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:39,346 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586779527] [2025-04-24 23:38:39,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:39,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-24 23:38:39,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-24 23:38:39,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:39,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:39,413 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 23:38:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:39,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586779527] [2025-04-24 23:38:39,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586779527] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:39,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:39,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-24 23:38:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964349070] [2025-04-24 23:38:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:39,414 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 23:38:39,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:39,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 23:38:39,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-24 23:38:39,414 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,414 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:39,414 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23:38:39,414 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,414 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,415 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,415 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,415 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,485 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,485 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,485 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,485 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,485 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:39,485 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-24 23:38:39,486 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:39,486 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1228033803, now seen corresponding path program 1 times [2025-04-24 23:38:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:39,486 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437510660] [2025-04-24 23:38:39,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:39,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-24 23:38:39,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-24 23:38:39,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:39,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 23:38:39,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:39,567 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437510660] [2025-04-24 23:38:39,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437510660] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 23:38:39,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 23:38:39,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 23:38:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798028950] [2025-04-24 23:38:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 23:38:39,567 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 23:38:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:39,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 23:38:39,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-24 23:38:39,567 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,567 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:39,567 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 23:38:39,567 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,567 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,567 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,567 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,567 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:39,567 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:39,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:39,607 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-24 23:38:39,607 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:38:39,608 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:38:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1756823450, now seen corresponding path program 1 times [2025-04-24 23:38:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:38:39,608 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919799938] [2025-04-24 23:38:39,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:38:39,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-24 23:38:39,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-24 23:38:39,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:39,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-04-24 23:38:39,701 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216011313] [2025-04-24 23:38:39,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 23:38:39,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 23:38:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 23:38:39,704 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 23:38:39,706 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 23:38:39,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-24 23:38:39,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-24 23:38:39,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 23:38:39,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:38:39,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-24 23:38:39,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 23:38:40,309 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2025-04-24 23:38:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 23:38:40,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 23:38:47,076 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 466 treesize of output 446 [2025-04-24 23:38:47,160 INFO L325 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2025-04-24 23:38:47,160 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 427 [2025-04-24 23:38:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 23:38:59,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 23:38:59,089 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919799938] [2025-04-24 23:38:59,090 WARN L301 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-04-24 23:38:59,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216011313] [2025-04-24 23:38:59,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216011313] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 23:38:59,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-04-24 23:38:59,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2025-04-24 23:38:59,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738817063] [2025-04-24 23:38:59,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-04-24 23:38:59,090 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-24 23:38:59,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 23:38:59,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-24 23:38:59,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2025-04-24 23:38:59,091 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:38:59,091 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 23:38:59,091 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 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 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:38:59,091 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 23:39:11,336 WARN L286 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 193 DAG size of output: 100 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:39:34,417 WARN L286 SmtUtils]: Spent 16.50s on a formula simplification. DAG size of input: 132 DAG size of output: 129 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:39:55,214 WARN L286 SmtUtils]: Spent 17.48s on a formula simplification. DAG size of input: 128 DAG size of output: 125 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:40:11,955 WARN L286 SmtUtils]: Spent 16.16s on a formula simplification. DAG size of input: 123 DAG size of output: 121 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:40:22,486 WARN L286 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:40:40,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:40:40,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:40:40,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:40:40,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:40:40,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 23:40:40,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 23:40:40,792 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-24 23:40:40,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-24 23:40:40,996 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,SelfDestructingSolverStorable13 [2025-04-24 23:40:40,996 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 23:40:40,996 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 23:40:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash 666289573, now seen corresponding path program 2 times [2025-04-24 23:40:40,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 23:40:40,996 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077356971] [2025-04-24 23:40:40,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 23:40:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 23:40:41,011 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 105 statements into 2 equivalence classes. [2025-04-24 23:40:41,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 105 of 105 statements. [2025-04-24 23:40:41,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 23:40:41,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-04-24 23:40:41,279 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879297058] [2025-04-24 23:40:41,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 23:40:41,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 23:40:41,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 23:40:41,281 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 23:40:41,282 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 23:40:41,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 105 statements into 2 equivalence classes. [2025-04-24 23:40:42,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 105 of 105 statements. [2025-04-24 23:40:42,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 23:40:42,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 23:40:42,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 121 conjuncts are in the unsatisfiable core [2025-04-24 23:40:42,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 23:40:42,891 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2025-04-24 23:40:43,413 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 68 [2025-04-24 23:40:44,078 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 71 [2025-04-24 23:40:44,729 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 64 [2025-04-24 23:40:45,459 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 71 [2025-04-24 23:40:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 23:40:45,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 23:41:59,803 WARN L286 SmtUtils]: Spent 43.82s on a formula simplification. DAG size of input: 301 DAG size of output: 275 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:43:21,607 WARN L286 SmtUtils]: Spent 11.78s on a formula simplification that was a NOOP. DAG size: 268 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:43:55,120 WARN L286 SmtUtils]: Spent 22.07s on a formula simplification. DAG size of input: 343 DAG size of output: 337 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:44:48,883 WARN L286 SmtUtils]: Spent 13.40s on a formula simplification that was a NOOP. DAG size: 339 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:45:20,629 WARN L286 SmtUtils]: Spent 10.73s on a formula simplification that was a NOOP. DAG size: 313 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-24 23:46:09,447 WARN L286 SmtUtils]: Spent 7.98s on a formula simplification that was a NOOP. DAG size: 289 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)