./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1f73d82f Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-1f73d82-m [2024-11-21 13:17:03,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 13:17:03,690 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-21 13:17:03,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 13:17:03,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 13:17:03,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 13:17:03,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 13:17:03,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 13:17:03,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 13:17:03,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 13:17:03,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 13:17:03,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 13:17:03,717 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 13:17:03,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 13:17:03,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 13:17:03,717 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 13:17:03,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 13:17:03,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-21 13:17:03,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 13:17:03,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 13:17:03,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 13:17:03,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 13:17:03,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 13:17:03,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-21 13:17:03,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 13:17:03,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Commutativity condition synthesis=SUFFICIENT [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-21 13:17:03,720 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-21 13:17:03,721 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-jdk21/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-21 13:17:04,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 13:17:04,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 13:17:04,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 13:17:04,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 13:17:04,035 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 13:17:04,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-21 13:17:05,362 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/e4833bc01/f34a6a35e2444770b9d9d6dac842d913/FLAGcf01787df [2024-11-21 13:17:05,646 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 13:17:05,647 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-21 13:17:05,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/e4833bc01/f34a6a35e2444770b9d9d6dac842d913/FLAGcf01787df [2024-11-21 13:17:05,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/e4833bc01/f34a6a35e2444770b9d9d6dac842d913 [2024-11-21 13:17:05,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 13:17:05,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 13:17:05,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 13:17:05,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 13:17:05,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 13:17:05,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:17:05" (1/1) ... [2024-11-21 13:17:05,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e1717f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:05, skipping insertion in model container [2024-11-21 13:17:05,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:17:05" (1/1) ... [2024-11-21 13:17:05,727 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 13:17:05,990 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-11-21 13:17:06,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-11-21 13:17:06,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-11-21 13:17:06,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 13:17:06,042 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 13:17:06,090 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-11-21 13:17:06,092 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-11-21 13:17:06,093 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-11-21 13:17:06,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 13:17:06,139 INFO L204 MainTranslator]: Completed translation [2024-11-21 13:17:06,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06 WrapperNode [2024-11-21 13:17:06,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 13:17:06,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 13:17:06,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 13:17:06,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 13:17:06,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,190 INFO L138 Inliner]: procedures = 168, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2024-11-21 13:17:06,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 13:17:06,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 13:17:06,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 13:17:06,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 13:17:06,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,219 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 13:17:06,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 13:17:06,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 13:17:06,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 13:17:06,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (1/1) ... [2024-11-21 13:17:06,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-21 13:17:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-11-21 13:17:06,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-21 13:17:06,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-21 13:17:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-21 13:17:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-21 13:17:06,304 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-21 13:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-21 13:17:06,304 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-21 13:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-21 13:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-21 13:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 13:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-21 13:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-21 13:17:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-21 13:17:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 13:17:06,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 13:17:06,306 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-21 13:17:06,429 INFO L234 CfgBuilder]: Building ICFG [2024-11-21 13:17:06,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 13:17:06,689 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-21 13:17:06,690 INFO L283 CfgBuilder]: Performing block encoding [2024-11-21 13:17:06,882 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 13:17:06,885 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-21 13:17:06,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:17:06 BoogieIcfgContainer [2024-11-21 13:17:06,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 13:17:06,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 13:17:06,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 13:17:06,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 13:17:06,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:17:05" (1/3) ... [2024-11-21 13:17:06,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7d2ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:17:06, skipping insertion in model container [2024-11-21 13:17:06,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:17:06" (2/3) ... [2024-11-21 13:17:06,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7d2ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:17:06, skipping insertion in model container [2024-11-21 13:17:06,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:17:06" (3/3) ... [2024-11-21 13:17:06,896 INFO L128 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-21 13:17:06,908 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 13:17:06,910 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_ok.i that has 3 procedures, 39 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-21 13:17:06,910 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-21 13:17:07,003 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-21 13:17:07,046 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 13:17:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-21 13:17:07,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-11-21 13:17:07,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-21 13:17:07,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-21 13:17:07,130 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-21 13:17:07,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork0 ======== [2024-11-21 13:17:07,152 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@b0b9467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 13:17:07,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-21 13:17:10,700 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:10,700 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:10,700 INFO L139 ounterexampleChecker]: Examining path program with hash -1682541560, occurence #1 [2024-11-21 13:17:10,700 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:10,700 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:10,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -279431766, now seen corresponding path program 1 times [2024-11-21 13:17:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:10,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333494457] [2024-11-21 13:17:10,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:10,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333494457] [2024-11-21 13:17:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333494457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:11,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:11,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348789762] [2024-11-21 13:17:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:11,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:11,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:11,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:11,060 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:11,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:11,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 13:17:11,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:11,234 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:11,234 INFO L139 ounterexampleChecker]: Examining path program with hash 313021098, occurence #1 [2024-11-21 13:17:11,234 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:11,234 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:11,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1523661937, now seen corresponding path program 1 times [2024-11-21 13:17:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741634764] [2024-11-21 13:17:11,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 13:17:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741634764] [2024-11-21 13:17:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741634764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:11,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:11,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965044850] [2024-11-21 13:17:11,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:11,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:11,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:11,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:11,434 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:11,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:11,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 13:17:11,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:11,558 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:11,558 INFO L139 ounterexampleChecker]: Examining path program with hash -1804381917, occurence #1 [2024-11-21 13:17:11,558 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:11,558 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:11,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1768066525, now seen corresponding path program 1 times [2024-11-21 13:17:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:11,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678295616] [2024-11-21 13:17:11,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:11,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:11,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:11,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678295616] [2024-11-21 13:17:11,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678295616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:11,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:11,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 13:17:11,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176157707] [2024-11-21 13:17:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:11,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 13:17:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:11,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 13:17:11,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 13:17:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:11,786 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:11,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:11,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 13:17:11,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:11,910 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:11,910 INFO L139 ounterexampleChecker]: Examining path program with hash 39193499, occurence #1 [2024-11-21 13:17:11,910 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:11,910 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:11,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2115220411, now seen corresponding path program 1 times [2024-11-21 13:17:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:11,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273289975] [2024-11-21 13:17:11,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273289975] [2024-11-21 13:17:12,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273289975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:12,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:12,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 13:17:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311914055] [2024-11-21 13:17:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:12,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:12,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:12,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:12,079 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:12,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:12,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:12,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:12,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:12,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:13,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 13:17:13,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:13,586 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:13,587 INFO L139 ounterexampleChecker]: Examining path program with hash -1069549811, occurence #1 [2024-11-21 13:17:13,587 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:13,587 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:13,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 760620527, now seen corresponding path program 1 times [2024-11-21 13:17:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:13,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378506700] [2024-11-21 13:17:13,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 13:17:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378506700] [2024-11-21 13:17:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378506700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:13,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299669475] [2024-11-21 13:17:13,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:13,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 13:17:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:13,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 13:17:13,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 13:17:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:13,820 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:13,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:13,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:13,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:13,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:13,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:13,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 13:17:15,098 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:15,098 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:15,098 INFO L139 ounterexampleChecker]: Examining path program with hash 1216705241, occurence #1 [2024-11-21 13:17:15,098 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:15,099 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:15,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:15,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1389237691, now seen corresponding path program 1 times [2024-11-21 13:17:15,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:15,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749458344] [2024-11-21 13:17:15,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:15,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-21 13:17:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749458344] [2024-11-21 13:17:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749458344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:15,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:15,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:15,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715535724] [2024-11-21 13:17:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:15,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:15,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:15,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:15,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:15,413 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:15,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:15,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:15,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 13:17:15,494 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:15,494 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:15,494 INFO L139 ounterexampleChecker]: Examining path program with hash -1013696304, occurence #1 [2024-11-21 13:17:15,494 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:15,494 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:15,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:15,495 INFO L85 PathProgramCache]: Analyzing trace with hash -568554838, now seen corresponding path program 2 times [2024-11-21 13:17:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:15,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114369367] [2024-11-21 13:17:15,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:15,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 13:17:15,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114369367] [2024-11-21 13:17:15,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114369367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:15,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 13:17:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352259781] [2024-11-21 13:17:15,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:15,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 13:17:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:15,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 13:17:15,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 13:17:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:15,667 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:15,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:15,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:15,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 13:17:15,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-21 13:17:15,895 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-21 13:17:15,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 13:17:15,901 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-21 13:17:15,903 INFO L319 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE,SAFE (1/3) [2024-11-21 13:17:15,905 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 13:17:15,907 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-21 13:17:15,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-21 13:17:15,908 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@b0b9467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 13:17:15,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-21 13:17:15,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-21 13:17:15,913 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-11-21 13:17:15,915 INFO L422 BasicCegarLoop]: Path program histogram: [] [2024-11-21 13:17:15,916 INFO L319 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (2/3) [2024-11-21 13:17:15,918 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 13:17:15,919 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-21 13:17:15,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork1 ======== [2024-11-21 13:17:15,920 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@b0b9467, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 13:17:15,921 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 13:17:15,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:15,972 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:15,972 INFO L139 ounterexampleChecker]: Examining path program with hash -194682720, occurence #1 [2024-11-21 13:17:15,972 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:15,972 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:15,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash -18082180, now seen corresponding path program 1 times [2024-11-21 13:17:15,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:15,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863441119] [2024-11-21 13:17:15,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:16,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863441119] [2024-11-21 13:17:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863441119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:16,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 13:17:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625780670] [2024-11-21 13:17:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:16,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:16,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:16,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,046 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:16,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:16,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 13:17:16,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:16,198 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:16,198 INFO L139 ounterexampleChecker]: Examining path program with hash -1815673140, occurence #1 [2024-11-21 13:17:16,198 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:16,198 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:16,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -647072665, now seen corresponding path program 1 times [2024-11-21 13:17:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:16,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519532877] [2024-11-21 13:17:16,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:16,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-21 13:17:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519532877] [2024-11-21 13:17:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519532877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:16,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069563160] [2024-11-21 13:17:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:16,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:16,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:16,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:16,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,319 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:16,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:16,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 13:17:16,397 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:16,397 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:16,397 INFO L139 ounterexampleChecker]: Examining path program with hash 635171864, occurence #1 [2024-11-21 13:17:16,398 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:16,398 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:16,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash -519183254, now seen corresponding path program 1 times [2024-11-21 13:17:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:16,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025008091] [2024-11-21 13:17:16,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:16,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 13:17:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025008091] [2024-11-21 13:17:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025008091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:16,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886575390] [2024-11-21 13:17:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:16,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:16,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:16,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,451 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:16,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:16,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 13:17:16,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:16,532 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:16,533 INFO L139 ounterexampleChecker]: Examining path program with hash -601847017, occurence #1 [2024-11-21 13:17:16,533 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:16,533 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:16,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash 944391433, now seen corresponding path program 1 times [2024-11-21 13:17:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308327040] [2024-11-21 13:17:16,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-21 13:17:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308327040] [2024-11-21 13:17:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308327040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:16,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:16,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083008656] [2024-11-21 13:17:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:16,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 13:17:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:16,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 13:17:16,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 13:17:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,582 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:16,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 13:17:16,640 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:16,640 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:16,640 INFO L139 ounterexampleChecker]: Examining path program with hash 1805773030, occurence #1 [2024-11-21 13:17:16,640 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:16,640 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:16,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash -446726075, now seen corresponding path program 1 times [2024-11-21 13:17:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:16,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144822396] [2024-11-21 13:17:16,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:16,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144822396] [2024-11-21 13:17:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144822396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-21 13:17:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384357117] [2024-11-21 13:17:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:16,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 13:17:16,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:16,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 13:17:16,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 13:17:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,715 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:16,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:16,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:16,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 13:17:16,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:16,803 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:16,803 INFO L139 ounterexampleChecker]: Examining path program with hash -266644144, occurence #1 [2024-11-21 13:17:16,803 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:17:16,803 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:16,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 878633464, now seen corresponding path program 1 times [2024-11-21 13:17:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:16,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919420903] [2024-11-21 13:17:16,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919420903] [2024-11-21 13:17:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919420903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 13:17:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 13:17:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 13:17:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908774418] [2024-11-21 13:17:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 13:17:16,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 13:17:16,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:16,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 13:17:16,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 13:17:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,909 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:16,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:16,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:16,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:16,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 13:17:16,956 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:17:16,956 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:17:16,956 INFO L139 ounterexampleChecker]: Examining path program with hash -266644144, occurence #2 [2024-11-21 13:17:16,956 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-21 13:17:16,956 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2024-11-21 13:17:16,969 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-21 13:17:16,970 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2024-11-21 13:17:16,970 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-21 13:17:16,970 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2024-11-21 13:17:16,970 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-21 13:17:16,970 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2024-11-21 13:17:16,970 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-21 13:17:16,970 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2024-11-21 13:17:16,971 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-21 13:17:16,971 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 33 [2024-11-21 13:17:16,971 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-21 13:17:16,971 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 36 [2024-11-21 13:17:16,971 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-21 13:17:16,971 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-21 13:17:16,971 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:17:16,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:17:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash -960496227, now seen corresponding path program 1 times [2024-11-21 13:17:16,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:17:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919657638] [2024-11-21 13:17:16,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:17:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-21 13:17:17,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504260337] [2024-11-21 13:17:17,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:17:17,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 13:17:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-11-21 13:17:17,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 13:17:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 13:17:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 13:17:17,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-21 13:17:17,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 13:17:17,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-21 13:17:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:18,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 13:17:25,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 446 [2024-11-21 13:17:25,047 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2024-11-21 13:17:25,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 496 treesize of output 427 [2024-11-21 13:17:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:17:40,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 13:17:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919657638] [2024-11-21 13:17:40,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-21 13:17:40,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504260337] [2024-11-21 13:17:40,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504260337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 13:17:40,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-21 13:17:40,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2024-11-21 13:17:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769703898] [2024-11-21 13:17:40,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-21 13:17:40,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-21 13:17:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 13:17:40,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-21 13:17:40,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-21 13:17:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:40,057 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-21 13:17:40,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:17:40,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-21 13:17:51,376 WARN L286 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 193 DAG size of output: 100 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:18:17,456 WARN L286 SmtUtils]: Spent 17.99s on a formula simplification. DAG size of input: 132 DAG size of output: 129 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:18:29,497 WARN L286 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 128 DAG size of output: 125 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:18:41,636 WARN L286 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 123 DAG size of output: 121 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:18:49,144 WARN L286 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 13:19:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-21 13:19:13,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 13:19:13,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-21 13:19:13,529 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 13:19:13,529 INFO L303 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-21 13:19:13,529 INFO L139 ounterexampleChecker]: Examining path program with hash -397727455, occurence #1 [2024-11-21 13:19:13,529 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-21 13:19:13,529 INFO L314 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-21 13:19:13,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 13:19:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1926201872, now seen corresponding path program 2 times [2024-11-21 13:19:13,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 13:19:13,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043594242] [2024-11-21 13:19:13,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 13:19:13,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 13:19:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-21 13:19:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916342842] [2024-11-21 13:19:13,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 13:19:13,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 13:19:13,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-11-21 13:19:13,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 13:19:13,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 13:19:15,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 13:19:15,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 13:19:15,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-21 13:19:15,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 13:19:15,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 13:19:15,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-21 13:19:15,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 13:19:15,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-21 13:19:16,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 13:19:16,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-21 13:19:16,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 13:19:16,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-21 13:19:17,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-21 13:19:17,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-21 13:19:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 13:19:17,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 13:20:40,097 WARN L286 SmtUtils]: Spent 35.15s on a formula simplification. DAG size of input: 286 DAG size of output: 280 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:21:23,779 WARN L286 SmtUtils]: Spent 21.95s on a formula simplification that was a NOOP. DAG size: 266 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:23:54,044 WARN L286 SmtUtils]: Spent 18.83s on a formula simplification that was a NOOP. DAG size: 270 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:25:58,588 WARN L286 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 348 DAG size of output: 344 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:28:34,929 WARN L286 SmtUtils]: Spent 45.22s on a formula simplification that was a NOOP. DAG size: 347 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-21 13:29:57,356 WARN L286 SmtUtils]: Spent 26.96s on a formula simplification that was a NOOP. DAG size: 305 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15