./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:18:11,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:18:11,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:18:11,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:18:11,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:18:11,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:18:11,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:18:11,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:18:11,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:18:11,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:18:11,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:18:11,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:18:11,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:18:11,161 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:18:11,161 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:18:11,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:18:11,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:18:11,161 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:18:11,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:18:11,162 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:18:11,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:18:11,164 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:18:11,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:18:11,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:18:11,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:18:11,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:18:11,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:18:11,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:18:11,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:18:11,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:18:11,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:18:11,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:18:11,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:18:11,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:18:11,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:18:11,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:18:11,167 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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 -> Automizer 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 -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-11-07 11:18:11,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:18:11,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:18:11,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:18:11,625 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:18:11,625 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:18:11,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-07 11:18:12,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:18:13,272 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:18:13,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-07 11:18:13,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ba814fb6/bfc4481a92a54873a0f4459f3942c6a2/FLAG0f73748e4 [2024-11-07 11:18:13,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ba814fb6/bfc4481a92a54873a0f4459f3942c6a2 [2024-11-07 11:18:13,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:18:13,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:18:13,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:18:13,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:18:13,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:18:13,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331648e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13, skipping insertion in model container [2024-11-07 11:18:13,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:18:13,508 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/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2024-11-07 11:18:13,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:18:13,649 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:18:13,658 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/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2024-11-07 11:18:13,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:18:13,722 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:18:13,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13 WrapperNode [2024-11-07 11:18:13,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:18:13,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:18:13,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:18:13,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:18:13,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,767 INFO L138 Inliner]: procedures = 165, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 99 [2024-11-07 11:18:13,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:18:13,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:18:13,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:18:13,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:18:13,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,793 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-07 11:18:13,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:18:13,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:18:13,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:18:13,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:18:13,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (1/1) ... [2024-11-07 11:18:13,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:18:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:18:13,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:18:13,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-07 11:18:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 11:18:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:18:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:18:13,855 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 11:18:13,976 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:18:13,977 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:18:14,180 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:18:14,180 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:18:14,311 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:18:14,312 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 11:18:14,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:18:14 BoogieIcfgContainer [2024-11-07 11:18:14,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:18:14,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:18:14,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:18:14,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:18:14,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:18:13" (1/3) ... [2024-11-07 11:18:14,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c495f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:18:14, skipping insertion in model container [2024-11-07 11:18:14,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:18:13" (2/3) ... [2024-11-07 11:18:14,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c495f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:18:14, skipping insertion in model container [2024-11-07 11:18:14,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:18:14" (3/3) ... [2024-11-07 11:18:14,320 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-11-07 11:18:14,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:18:14,334 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 11:18:14,334 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:18:14,382 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 11:18:14,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 34 transitions, 72 flow [2024-11-07 11:18:14,444 INFO L124 PetriNetUnfolderBase]: 6/33 cut-off events. [2024-11-07 11:18:14,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:18:14,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 6/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-07 11:18:14,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 34 transitions, 72 flow [2024-11-07 11:18:14,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 33 transitions, 69 flow [2024-11-07 11:18:14,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:18:14,473 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=PETRI_NET, 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;@62debb35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:18:14,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 11:18:14,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:18:14,486 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2024-11-07 11:18:14,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:18:14,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:14,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:18:14,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:18:14,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:14,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1341466292, now seen corresponding path program 1 times [2024-11-07 11:18:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:14,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314358065] [2024-11-07 11:18:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:14,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:18:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:18:14,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:18:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314358065] [2024-11-07 11:18:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314358065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:18:14,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:18:14,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:18:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686688908] [2024-11-07 11:18:14,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:18:14,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:18:14,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:18:14,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:18:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:18:14,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-11-07 11:18:14,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-07 11:18:14,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:18:14,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-11-07 11:18:14,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:18:15,011 INFO L124 PetriNetUnfolderBase]: 135/274 cut-off events. [2024-11-07 11:18:15,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:18:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 274 events. 135/274 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 956 event pairs, 43 based on Foata normal form. 6/239 useless extension candidates. Maximal degree in co-relation 517. Up to 144 conditions per place. [2024-11-07 11:18:15,016 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 32 selfloop transitions, 9 changer transitions 2/49 dead transitions. [2024-11-07 11:18:15,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 187 flow [2024-11-07 11:18:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 11:18:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 11:18:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-11-07 11:18:15,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-11-07 11:18:15,035 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 69 flow. Second operand 5 states and 90 transitions. [2024-11-07 11:18:15,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 187 flow [2024-11-07 11:18:15,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:18:15,044 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 116 flow [2024-11-07 11:18:15,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-07 11:18:15,050 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-11-07 11:18:15,051 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 116 flow [2024-11-07 11:18:15,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-07 11:18:15,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:15,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:18:15,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:18:15,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:18:15,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1549113390, now seen corresponding path program 1 times [2024-11-07 11:18:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578318201] [2024-11-07 11:18:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:18:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:18:15,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:18:15,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578318201] [2024-11-07 11:18:15,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578318201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:18:15,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:18:15,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:18:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355815680] [2024-11-07 11:18:15,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:18:15,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:18:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:18:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:18:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:18:15,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-11-07 11:18:15,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:18:15,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:18:15,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-11-07 11:18:15,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:18:15,425 INFO L124 PetriNetUnfolderBase]: 107/251 cut-off events. [2024-11-07 11:18:15,425 INFO L125 PetriNetUnfolderBase]: For 173/179 co-relation queries the response was YES. [2024-11-07 11:18:15,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 251 events. 107/251 cut-off events. For 173/179 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 802 event pairs, 22 based on Foata normal form. 12/243 useless extension candidates. Maximal degree in co-relation 620. Up to 89 conditions per place. [2024-11-07 11:18:15,431 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 31 selfloop transitions, 5 changer transitions 1/45 dead transitions. [2024-11-07 11:18:15,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 226 flow [2024-11-07 11:18:15,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:18:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:18:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-07 11:18:15,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-11-07 11:18:15,434 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 116 flow. Second operand 4 states and 82 transitions. [2024-11-07 11:18:15,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 226 flow [2024-11-07 11:18:15,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 45 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:18:15,437 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 137 flow [2024-11-07 11:18:15,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-11-07 11:18:15,438 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-11-07 11:18:15,438 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 137 flow [2024-11-07 11:18:15,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:18:15,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:15,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:18:15,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:18:15,439 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:18:15,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1651330661, now seen corresponding path program 1 times [2024-11-07 11:18:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223807350] [2024-11-07 11:18:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:18:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:18:15,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:18:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223807350] [2024-11-07 11:18:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223807350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:18:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:18:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:18:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785326946] [2024-11-07 11:18:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:18:15,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:18:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:18:15,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:18:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:18:15,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-11-07 11:18:15,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) 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) [2024-11-07 11:18:15,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:18:15,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-11-07 11:18:15,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:18:15,635 INFO L124 PetriNetUnfolderBase]: 64/171 cut-off events. [2024-11-07 11:18:15,636 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-07 11:18:15,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 171 events. 64/171 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 498 event pairs, 16 based on Foata normal form. 13/168 useless extension candidates. Maximal degree in co-relation 416. Up to 89 conditions per place. [2024-11-07 11:18:15,639 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 21 selfloop transitions, 4 changer transitions 4/36 dead transitions. [2024-11-07 11:18:15,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 196 flow [2024-11-07 11:18:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:18:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:18:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-07 11:18:15,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-11-07 11:18:15,641 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 137 flow. Second operand 3 states and 62 transitions. [2024-11-07 11:18:15,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 196 flow [2024-11-07 11:18:15,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 182 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 11:18:15,644 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 106 flow [2024-11-07 11:18:15,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-07 11:18:15,645 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-07 11:18:15,645 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 106 flow [2024-11-07 11:18:15,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) 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) [2024-11-07 11:18:15,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:18:15,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:18:15,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:18:15,645 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:18:15,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:18:15,646 INFO L85 PathProgramCache]: Analyzing trace with hash 982460297, now seen corresponding path program 1 times [2024-11-07 11:18:15,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:18:15,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790886017] [2024-11-07 11:18:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:18:15,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:18:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:18:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:18:15,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:18:15,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790886017] [2024-11-07 11:18:15,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790886017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:18:15,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:18:15,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:18:15,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455323519] [2024-11-07 11:18:15,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:18:15,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:18:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:18:15,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:18:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:18:15,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-07 11:18:15,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-07 11:18:15,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:18:15,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-07 11:18:15,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:18:15,989 INFO L124 PetriNetUnfolderBase]: 80/197 cut-off events. [2024-11-07 11:18:15,990 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-11-07 11:18:15,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 197 events. 80/197 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 578 event pairs, 26 based on Foata normal form. 8/184 useless extension candidates. Maximal degree in co-relation 493. Up to 74 conditions per place. [2024-11-07 11:18:15,992 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2024-11-07 11:18:15,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 216 flow [2024-11-07 11:18:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:18:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:18:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-11-07 11:18:15,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-11-07 11:18:15,994 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 106 flow. Second operand 6 states and 79 transitions. [2024-11-07 11:18:15,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 216 flow [2024-11-07 11:18:15,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 11:18:15,996 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-11-07 11:18:15,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-11-07 11:18:16,000 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-07 11:18:16,000 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-11-07 11:18:16,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-07 11:18:16,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 11:18:16,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-07 11:18:16,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-07 11:18:16,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-07 11:18:16,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-07 11:18:16,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:18:16,005 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-07 11:18:16,010 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 11:18:16,010 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 11:18:16,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 11:18:16 BasicIcfg [2024-11-07 11:18:16,017 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 11:18:16,018 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 11:18:16,018 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 11:18:16,018 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 11:18:16,019 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:18:14" (3/4) ... [2024-11-07 11:18:16,021 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 11:18:16,023 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-11-07 11:18:16,027 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-07 11:18:16,027 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-07 11:18:16,027 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-07 11:18:16,027 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-07 11:18:16,097 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 11:18:16,097 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 11:18:16,098 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 11:18:16,100 INFO L158 Benchmark]: Toolchain (without parser) took 2775.41ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 90.4MB in the beginning and 92.6MB in the end (delta: -2.3MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2024-11-07 11:18:16,101 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 117.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 11:18:16,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.69ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 70.4MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 11:18:16,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.32ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 11:18:16,102 INFO L158 Benchmark]: Boogie Preprocessor took 35.28ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 11:18:16,102 INFO L158 Benchmark]: RCFGBuilder took 508.48ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 87.1MB in the end (delta: -20.2MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2024-11-07 11:18:16,103 INFO L158 Benchmark]: TraceAbstraction took 1703.03ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 86.2MB in the beginning and 97.1MB in the end (delta: -10.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2024-11-07 11:18:16,103 INFO L158 Benchmark]: Witness Printer took 79.77ms. Allocated memory is still 159.4MB. Free memory was 97.1MB in the beginning and 92.6MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 11:18:16,105 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 117.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.69ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 70.4MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.32ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.28ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 508.48ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 87.1MB in the end (delta: -20.2MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1703.03ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 86.2MB in the beginning and 97.1MB in the end (delta: -10.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Witness Printer took 79.77ms. Allocated memory is still 159.4MB. Free memory was 97.1MB in the beginning and 92.6MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 50 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 1 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 11:18:16,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE