./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 44c38e66 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/stack_longer-2.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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 18:28:07,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 18:28:07,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 18:28:07,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 18:28:07,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 18:28:07,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 18:28:07,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 18:28:07,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 18:28:07,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 18:28:07,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 18:28:07,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 18:28:07,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 18:28:07,203 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 18:28:07,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 18:28:07,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:28:07,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:28:07,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:28:07,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:28:07,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 18:28:07,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 18:28:07,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 18:28:07,207 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 18:28:07,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 18:28:07,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 18:28:07,207 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 18:28:07,207 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 18:28:07,207 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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2025-04-24 18:28:07,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 18:28:07,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 18:28:07,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 18:28:07,414 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 18:28:07,415 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 18:28:07,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2025-04-24 18:28:08,668 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/961b39664/f976c3c2e702429e8bb89bc9d53e9a83/FLAG968a8d553 [2025-04-24 18:28:08,941 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 18:28:08,942 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2025-04-24 18:28:08,954 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/961b39664/f976c3c2e702429e8bb89bc9d53e9a83/FLAG968a8d553 [2025-04-24 18:28:09,719 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/961b39664/f976c3c2e702429e8bb89bc9d53e9a83 [2025-04-24 18:28:09,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 18:28:09,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 18:28:09,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 18:28:09,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 18:28:09,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 18:28:09,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:28:09" (1/1) ... [2025-04-24 18:28:09,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62995685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:09, skipping insertion in model container [2025-04-24 18:28:09,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:28:09" (1/1) ... [2025-04-24 18:28:09,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 18:28:10,034 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/stack_longer-2.i[41529,41542] [2025-04-24 18:28:10,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:28:10,084 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 18:28:10,122 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/stack_longer-2.i[41529,41542] [2025-04-24 18:28:10,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:28:10,191 INFO L204 MainTranslator]: Completed translation [2025-04-24 18:28:10,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10 WrapperNode [2025-04-24 18:28:10,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 18:28:10,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 18:28:10,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 18:28:10,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 18:28:10,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,272 INFO L138 Inliner]: procedures = 277, calls = 430, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 539 [2025-04-24 18:28:10,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 18:28:10,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 18:28:10,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 18:28:10,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 18:28:10,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,304 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 18:28:10,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 18:28:10,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 18:28:10,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 18:28:10,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (1/1) ... [2025-04-24 18:28:10,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:28:10,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:10,348 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 18:28:10,350 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 18:28:10,364 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-24 18:28:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-24 18:28:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 18:28:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 18:28:10,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 18:28:10,366 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 18:28:10,464 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 18:28:10,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 18:28:11,009 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 18:28:11,009 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 18:28:14,024 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 18:28:14,024 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 18:28:14,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:28:14 BoogieIcfgContainer [2025-04-24 18:28:14,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 18:28:14,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 18:28:14,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 18:28:14,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 18:28:14,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 06:28:09" (1/3) ... [2025-04-24 18:28:14,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0c56c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:28:14, skipping insertion in model container [2025-04-24 18:28:14,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:28:10" (2/3) ... [2025-04-24 18:28:14,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0c56c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:28:14, skipping insertion in model container [2025-04-24 18:28:14,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:28:14" (3/3) ... [2025-04-24 18:28:14,032 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2025-04-24 18:28:14,042 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 18:28:14,044 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 30 locations, 32 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-24 18:28:14,045 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 18:28:14,093 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-24 18:28:14,125 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:28:14,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 18:28:14,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:14,129 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 18:28:14,130 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 18:28:14,196 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:28:14,209 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2025-04-24 18:28:14,216 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;@2a4562e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:28:14,216 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:28:14,388 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:14,388 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:14,388 INFO L139 ounterexampleChecker]: Examining path program with hash 1039645209, occurence #1 [2025-04-24 18:28:14,388 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:28:14,388 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:14,391 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash -858411651, now seen corresponding path program 1 times [2025-04-24 18:28:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:14,397 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173232808] [2025-04-24 18:28:14,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:14,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:14,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-24 18:28:14,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-24 18:28:14,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:14,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:14,866 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 18:28:14,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:14,867 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173232808] [2025-04-24 18:28:14,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173232808] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:28:14,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:28:14,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 18:28:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226077854] [2025-04-24 18:28:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:28:14,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 18:28:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:14,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 18:28:14,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 18:28:14,887 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:14,888 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:14,889 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 18:28:14,890 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:15,168 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,169 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 18:28:15,169 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:15,169 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:15,169 INFO L139 ounterexampleChecker]: Examining path program with hash 1898228608, occurence #1 [2025-04-24 18:28:15,169 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:28:15,169 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:15,169 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash -852390286, now seen corresponding path program 1 times [2025-04-24 18:28:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:15,170 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723082696] [2025-04-24 18:28:15,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:15,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:28:15,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:28:15,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:15,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:28:15,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:15,349 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723082696] [2025-04-24 18:28:15,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723082696] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:28:15,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:28:15,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 18:28:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751017805] [2025-04-24 18:28:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:28:15,350 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 18:28:15,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:15,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 18:28:15,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-24 18:28:15,351 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:15,351 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:15,351 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 18:28:15,351 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,351 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:15,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,421 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 18:28:15,421 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:15,421 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:15,421 INFO L139 ounterexampleChecker]: Examining path program with hash 626696370, occurence #1 [2025-04-24 18:28:15,421 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:28:15,421 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:15,421 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:15,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1806552881, now seen corresponding path program 1 times [2025-04-24 18:28:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:15,421 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695834164] [2025-04-24 18:28:15,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:15,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:28:15,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:28:15,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:15,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:15,684 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 18:28:15,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:15,685 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695834164] [2025-04-24 18:28:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695834164] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:28:15,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:28:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-24 18:28:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441408226] [2025-04-24 18:28:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:28:15,685 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-24 18:28:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:15,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-24 18:28:15,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-24 18:28:15,687 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:15,687 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:15,687 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 18:28:15,687 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,687 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,687 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:15,746 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,747 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:15,748 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:15,748 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 18:28:15,748 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:15,748 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:15,748 INFO L139 ounterexampleChecker]: Examining path program with hash 808838771, occurence #1 [2025-04-24 18:28:15,749 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:28:15,749 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:15,750 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:15,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1067933597, now seen corresponding path program 1 times [2025-04-24 18:28:15,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:15,750 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135353414] [2025-04-24 18:28:15,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:15,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:15,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 18:28:15,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 18:28:15,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:15,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:28:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:16,114 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135353414] [2025-04-24 18:28:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135353414] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:28:16,114 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791219409] [2025-04-24 18:28:16,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:16,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:16,116 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 18:28:16,118 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 18:28:16,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-24 18:28:16,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-24 18:28:16,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:16,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:16,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-24 18:28:16,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:28:16,337 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:28:16,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:28:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:28:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791219409] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:28:16,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:28:16,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-24 18:28:16,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997941440] [2025-04-24 18:28:16,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:28:16,597 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-24 18:28:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:16,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-24 18:28:16,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-04-24 18:28:16,598 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:16,598 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:16,598 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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 18:28:16,599 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:16,599 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:16,599 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:16,599 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:16,809 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:16,810 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:16,810 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:16,811 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:16,818 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 18:28:17,011 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:17,011 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:17,012 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:17,012 INFO L139 ounterexampleChecker]: Examining path program with hash -289913407, occurence #1 [2025-04-24 18:28:17,012 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:28:17,012 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:17,012 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash 953415162, now seen corresponding path program 1 times [2025-04-24 18:28:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:17,013 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316583150] [2025-04-24 18:28:17,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:17,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:17,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-04-24 18:28:17,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-04-24 18:28:17,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:17,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-24 18:28:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:17,558 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316583150] [2025-04-24 18:28:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316583150] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:28:17,559 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360934766] [2025-04-24 18:28:17,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:28:17,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:17,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:17,561 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 18:28:17,562 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 18:28:17,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-04-24 18:28:17,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-04-24 18:28:17,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:28:17,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:17,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-24 18:28:17,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:28:17,808 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:17,848 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:17,892 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-24 18:28:17,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:28:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-04-24 18:28:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360934766] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:28:18,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:28:18,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-04-24 18:28:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265291395] [2025-04-24 18:28:18,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:28:18,145 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-24 18:28:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:18,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-24 18:28:18,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-04-24 18:28:18,147 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:18,147 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:18,147 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 18:28:18,147 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:18,148 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:18,148 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:18,148 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:18,148 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:18,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:18,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:18,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:18,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:18,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-24 18:28:18,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-24 18:28:18,765 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:18,765 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:18,765 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:18,765 INFO L139 ounterexampleChecker]: Examining path program with hash -289913407, occurence #2 [2025-04-24 18:28:18,765 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:28:18,766 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:28:18,775 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:28:18,775 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 18:28:18,776 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:28:18,776 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 18:28:18,776 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,776 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 61 [2025-04-24 18:28:18,789 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,789 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 84 [2025-04-24 18:28:18,789 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,790 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 90 [2025-04-24 18:28:18,792 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,792 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 96 [2025-04-24 18:28:18,792 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,792 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 102 [2025-04-24 18:28:18,792 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,792 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 108 [2025-04-24 18:28:18,792 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,792 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 114 [2025-04-24 18:28:18,792 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,793 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 120 [2025-04-24 18:28:18,793 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,793 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 126 [2025-04-24 18:28:18,793 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:18,793 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:28:18,793 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:18,793 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1403899351, now seen corresponding path program 2 times [2025-04-24 18:28:18,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:18,793 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141051806] [2025-04-24 18:28:18,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 18:28:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:18,838 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-04-24 18:28:18,912 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-04-24 18:28:18,913 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 18:28:18,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 9 proven. 192 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-04-24 18:28:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:19,856 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141051806] [2025-04-24 18:28:19,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141051806] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:28:19,857 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65788388] [2025-04-24 18:28:19,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 18:28:19,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:19,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:19,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:28:19,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-24 18:28:19,966 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-04-24 18:28:20,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-04-24 18:28:20,098 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-24 18:28:20,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:20,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-24 18:28:20,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:28:20,139 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,177 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,239 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,276 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,313 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,349 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,389 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,440 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,488 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,526 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 66 proven. 195 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-04-24 18:28:20,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:28:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 9 proven. 192 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-04-24 18:28:21,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65788388] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:28:21,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:28:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 32 [2025-04-24 18:28:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404723720] [2025-04-24 18:28:21,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:28:21,193 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-24 18:28:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:21,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-24 18:28:21,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=614, Unknown=0, NotChecked=0, Total=992 [2025-04-24 18:28:21,194 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:21,194 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:21,195 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 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 18:28:21,195 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:21,196 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:21,196 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:21,196 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:21,196 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-04-24 18:28:21,196 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:22,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:22,471 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:22,471 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:22,471 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:22,471 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-24 18:28:22,473 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-04-24 18:28:22,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-24 18:28:22,673 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:22,673 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:22,673 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:22,674 INFO L139 ounterexampleChecker]: Examining path program with hash -289913407, occurence #3 [2025-04-24 18:28:22,674 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:28:22,674 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:28:22,674 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:28:22,674 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 18:28:22,674 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:28:22,674 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 18:28:22,674 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,674 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 145 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 168 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 174 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 180 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 186 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 192 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 198 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 204 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 210 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 216 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 222 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 228 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 234 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,681 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 240 [2025-04-24 18:28:22,681 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,682 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 246 [2025-04-24 18:28:22,682 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,682 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 252 [2025-04-24 18:28:22,682 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,682 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 258 [2025-04-24 18:28:22,682 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,682 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 264 [2025-04-24 18:28:22,682 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,682 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 270 [2025-04-24 18:28:22,682 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:22,682 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:28:22,682 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:22,683 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash -780054126, now seen corresponding path program 3 times [2025-04-24 18:28:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:22,683 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408182485] [2025-04-24 18:28:22,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 18:28:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:22,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 276 statements into 19 equivalence classes. [2025-04-24 18:28:23,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 240 of 276 statements. [2025-04-24 18:28:23,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-04-24 18:28:23,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 269 proven. 539 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2025-04-24 18:28:25,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:25,815 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408182485] [2025-04-24 18:28:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408182485] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:28:25,815 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502313092] [2025-04-24 18:28:25,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-24 18:28:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:25,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:28:25,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-24 18:28:25,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 276 statements into 19 equivalence classes. [2025-04-24 18:28:36,933 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 240 of 276 statements. [2025-04-24 18:28:36,934 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-04-24 18:28:36,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:36,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-24 18:28:36,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:28:36,993 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:37,053 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:37,086 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:37,117 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 385 proven. 66 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2025-04-24 18:28:37,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:28:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 855 proven. 9 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2025-04-24 18:28:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502313092] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:28:37,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:28:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8, 17] total 43 [2025-04-24 18:28:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316730789] [2025-04-24 18:28:37,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:28:37,827 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-04-24 18:28:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:37,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-04-24 18:28:37,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=1201, Unknown=0, NotChecked=0, Total=1806 [2025-04-24 18:28:37,830 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:37,830 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:37,830 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.488372093023257) internal successors, (365), 43 states have internal predecessors, (365), 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 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-04-24 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 67 states. [2025-04-24 18:28:37,830 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:38,403 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:38,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:38,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:38,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:38,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 18:28:38,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-04-24 18:28:38,404 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:38,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-24 18:28:38,604 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-04-24 18:28:38,604 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:38,605 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:38,605 INFO L139 ounterexampleChecker]: Examining path program with hash -1055837106, occurence #1 [2025-04-24 18:28:38,605 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:28:38,605 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:38,605 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1303941790, now seen corresponding path program 4 times [2025-04-24 18:28:38,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:38,606 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560251104] [2025-04-24 18:28:38,606 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 18:28:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:38,683 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 359 statements into 2 equivalence classes. [2025-04-24 18:28:39,183 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 359 of 359 statements. [2025-04-24 18:28:39,184 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 18:28:39,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 479 proven. 1260 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-04-24 18:28:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:28:48,487 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560251104] [2025-04-24 18:28:48,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560251104] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:28:48,488 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376097680] [2025-04-24 18:28:48,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-24 18:28:48,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:48,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:28:48,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:28:48,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-24 18:28:48,729 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 359 statements into 2 equivalence classes. [2025-04-24 18:28:48,975 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 359 of 359 statements. [2025-04-24 18:28:48,975 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-24 18:28:48,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:28:48,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 87 conjuncts are in the unsatisfiable core [2025-04-24 18:28:49,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:28:49,033 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,083 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,116 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,195 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,246 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,268 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,310 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,340 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,438 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,496 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,518 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,549 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,586 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,683 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,804 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,869 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,893 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,938 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:49,962 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,100 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 32 treesize of output 19 [2025-04-24 18:28:50,132 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,165 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,195 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,217 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,245 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,269 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,296 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,322 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,347 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,384 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,420 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,457 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,495 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,532 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,564 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,599 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:28:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 21 proven. 1767 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-04-24 18:28:50,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:28:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 427 proven. 1106 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2025-04-24 18:28:51,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376097680] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:28:51,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:28:51,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39, 24] total 94 [2025-04-24 18:28:51,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497257848] [2025-04-24 18:28:51,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:28:51,354 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2025-04-24 18:28:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:28:51,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2025-04-24 18:28:51,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2608, Invalid=6134, Unknown=0, NotChecked=0, Total=8742 [2025-04-24 18:28:51,359 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:51,360 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:28:51,360 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 6.329787234042553) internal successors, (595), 94 states have internal predecessors, (595), 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 18:28:51,360 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:51,360 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:51,360 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:51,360 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:51,360 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2025-04-24 18:28:51,361 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 83 states. [2025-04-24 18:28:51,361 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:51,361 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:28:55,537 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2025-04-24 18:28:55,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-24 18:28:55,738 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:28:55,738 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:28:55,738 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:28:55,738 INFO L139 ounterexampleChecker]: Examining path program with hash -1055837106, occurence #2 [2025-04-24 18:28:55,738 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-24 18:28:55,738 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-24 18:28:55,738 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:28:55,738 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-24 18:28:55,738 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-24 18:28:55,738 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-04-24 18:28:55,738 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,738 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 31 [2025-04-24 18:28:55,745 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,745 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 35 [2025-04-24 18:28:55,745 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,745 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-04-24 18:28:55,745 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,745 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 56 [2025-04-24 18:28:55,745 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,745 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 64 [2025-04-24 18:28:55,751 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 81 [2025-04-24 18:28:55,751 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 95 [2025-04-24 18:28:55,756 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,756 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 99 [2025-04-24 18:28:55,756 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,756 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 107 [2025-04-24 18:28:55,756 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,756 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 120 [2025-04-24 18:28:55,756 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,756 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 128 [2025-04-24 18:28:55,756 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,756 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 129 [2025-04-24 18:28:55,762 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,762 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 148 [2025-04-24 18:28:55,762 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,762 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 153 [2025-04-24 18:28:55,771 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,771 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 157 [2025-04-24 18:28:55,771 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,772 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 165 [2025-04-24 18:28:55,772 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,772 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 178 [2025-04-24 18:28:55,772 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,772 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 186 [2025-04-24 18:28:55,772 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,772 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 187 [2025-04-24 18:28:55,777 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,777 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 206 [2025-04-24 18:28:55,777 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,777 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 211 [2025-04-24 18:28:55,782 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,782 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 215 [2025-04-24 18:28:55,782 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,782 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 223 [2025-04-24 18:28:55,782 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,782 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 236 [2025-04-24 18:28:55,782 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,783 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 244 [2025-04-24 18:28:55,783 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,783 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 245 [2025-04-24 18:28:55,791 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,791 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 257 [2025-04-24 18:28:55,791 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,791 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 259 [2025-04-24 18:28:55,791 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,791 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 264 [2025-04-24 18:28:55,798 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,798 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 283 [2025-04-24 18:28:55,798 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,798 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 289 [2025-04-24 18:28:55,798 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,798 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 295 [2025-04-24 18:28:55,798 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,798 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 300 [2025-04-24 18:28:55,805 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,806 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 304 [2025-04-24 18:28:55,806 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,806 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 312 [2025-04-24 18:28:55,806 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,806 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 325 [2025-04-24 18:28:55,806 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,806 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 333 [2025-04-24 18:28:55,806 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,806 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 334 [2025-04-24 18:28:55,813 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,813 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 339 [2025-04-24 18:28:55,813 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,813 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 345 [2025-04-24 18:28:55,813 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,813 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 351 [2025-04-24 18:28:55,813 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,813 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 357 [2025-04-24 18:28:55,813 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 363 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 369 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 375 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 381 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 387 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 393 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 399 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 405 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 411 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 417 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 423 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 429 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 435 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 441 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 447 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 453 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 459 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,814 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 465 [2025-04-24 18:28:55,814 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 471 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 477 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 483 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 489 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 495 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 501 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 507 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 513 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 519 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 525 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 531 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 537 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 543 [2025-04-24 18:28:55,815 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-24 18:28:55,815 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-24 18:28:55,815 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:28:55,816 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:28:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash 296226934, now seen corresponding path program 5 times [2025-04-24 18:28:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:28:55,816 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232011704] [2025-04-24 18:28:55,816 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 18:28:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:28:55,910 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 549 statements into 35 equivalence classes. [2025-04-24 18:28:58,504 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 487 of 549 statements. [2025-04-24 18:28:58,504 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-04-24 18:28:58,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:29:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 949 proven. 668 refuted. 0 times theorem prover too weak. 3640 trivial. 0 not checked. [2025-04-24 18:29:05,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:29:05,644 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232011704] [2025-04-24 18:29:05,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232011704] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:29:05,644 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77457563] [2025-04-24 18:29:05,645 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-24 18:29:05,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:29:05,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:29:05,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:29:05,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-24 18:29:05,969 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 549 statements into 35 equivalence classes.