./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.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/28-race_reach_70-funloop_racefree.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', '2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba'] 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/28-race_reach_70-funloop_racefree.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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:19:28,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:19:28,705 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:19:28,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:19:28,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:19:28,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:19:28,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:19:28,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:19:28,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:19:28,733 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:19:28,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:19:28,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:19:28,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:19:28,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:19:28,733 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:19:28,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:19:28,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:19:28,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:19:28,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:19:28,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:19:28,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:19:28,735 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 -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2024-11-07 11:19:29,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:19:29,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:19:29,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:19:29,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:19:29,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:19:29,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-07 11:19:30,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:19:30,594 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:19:30,595 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-07 11:19:30,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/146cdb388/af8a0d81bdf74ee78de26b15323d2c51/FLAG542d8cb87 [2024-11-07 11:19:30,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/146cdb388/af8a0d81bdf74ee78de26b15323d2c51 [2024-11-07 11:19:30,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:19:30,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:19:30,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:19:30,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:19:30,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:19:30,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:30" (1/1) ... [2024-11-07 11:19:30,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705f0924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:30, skipping insertion in model container [2024-11-07 11:19:30,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:30" (1/1) ... [2024-11-07 11:19:30,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:19:31,155 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/28-race_reach_70-funloop_racefree.i[41323,41336] [2024-11-07 11:19:31,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:19:31,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:19:31,242 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/28-race_reach_70-funloop_racefree.i[41323,41336] [2024-11-07 11:19:31,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:19:31,305 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:19:31,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31 WrapperNode [2024-11-07 11:19:31,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:19:31,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:19:31,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:19:31,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:19:31,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,341 INFO L138 Inliner]: procedures = 272, calls = 95, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 277 [2024-11-07 11:19:31,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:19:31,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:19:31,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:19:31,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:19:31,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,377 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 70, 2, 5]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 60, 0, 5]. The 5 writes are split as follows [0, 4, 1, 0]. [2024-11-07 11:19:31,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:19:31,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:19:31,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:19:31,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:19:31,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (1/1) ... [2024-11-07 11:19:31,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:19:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:31,452 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 11:19:31,455 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 11:19:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 11:19:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:19:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 11:19:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 11:19:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:19:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:19:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 11:19:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 11:19:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:19:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:19:31,475 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 11:19:31,595 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:19:31,596 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:19:31,883 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:19:31,883 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:19:32,268 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:19:32,269 INFO L316 CfgBuilder]: Removed 25 assume(true) statements. [2024-11-07 11:19:32,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:32 BoogieIcfgContainer [2024-11-07 11:19:32,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:19:32,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:19:32,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:19:32,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:19:32,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:19:30" (1/3) ... [2024-11-07 11:19:32,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd07ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:32, skipping insertion in model container [2024-11-07 11:19:32,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:31" (2/3) ... [2024-11-07 11:19:32,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd07ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:32, skipping insertion in model container [2024-11-07 11:19:32,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:32" (3/3) ... [2024-11-07 11:19:32,293 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2024-11-07 11:19:32,302 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:19:32,303 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 11:19:32,303 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:19:32,339 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 11:19:32,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 97 transitions, 201 flow [2024-11-07 11:19:32,410 INFO L124 PetriNetUnfolderBase]: 41/143 cut-off events. [2024-11-07 11:19:32,412 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 11:19:32,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 41/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 539 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 90. Up to 8 conditions per place. [2024-11-07 11:19:32,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 97 transitions, 201 flow [2024-11-07 11:19:32,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 95 transitions, 194 flow [2024-11-07 11:19:32,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:19:32,432 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;@502e0ec1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:19:32,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 11:19:32,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:19:32,439 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-07 11:19:32,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:19:32,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:32,440 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-07 11:19:32,440 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-07 11:19:32,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1791212692, now seen corresponding path program 1 times [2024-11-07 11:19:32,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:32,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866107473] [2024-11-07 11:19:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866107473] [2024-11-07 11:19:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866107473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:19:32,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:19:32,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:19:32,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232275259] [2024-11-07 11:19:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:19:32,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:19:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:19:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:19:32,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-11-07 11:19:32,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 11:19:32,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:32,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-11-07 11:19:32,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:32,928 INFO L124 PetriNetUnfolderBase]: 483/1328 cut-off events. [2024-11-07 11:19:32,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:19:32,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1328 events. 483/1328 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8498 event pairs, 396 based on Foata normal form. 297/1456 useless extension candidates. Maximal degree in co-relation 2168. Up to 909 conditions per place. [2024-11-07 11:19:32,938 INFO L140 encePairwiseOnDemand]: 72/97 looper letters, 45 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-07 11:19:32,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 246 flow [2024-11-07 11:19:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:19:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:19:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-07 11:19:32,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5189003436426117 [2024-11-07 11:19:32,950 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 194 flow. Second operand 3 states and 151 transitions. [2024-11-07 11:19:32,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 246 flow [2024-11-07 11:19:32,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:19:32,955 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 162 flow [2024-11-07 11:19:32,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-07 11:19:32,962 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-11-07 11:19:32,962 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 162 flow [2024-11-07 11:19:32,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 11:19:32,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:32,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 11:19:32,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:19:32,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-07 11:19:32,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2079441551, now seen corresponding path program 1 times [2024-11-07 11:19:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688036472] [2024-11-07 11:19:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688036472] [2024-11-07 11:19:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688036472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345262058] [2024-11-07 11:19:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:33,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:33,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:19:33,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 11:19:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:33,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:19:33,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:33,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:33,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345262058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:33,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:33,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 11:19:33,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843491466] [2024-11-07 11:19:33,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:33,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:19:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:19:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:19:33,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-11-07 11:19:33,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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 11:19:33,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:33,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-11-07 11:19:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:33,465 INFO L124 PetriNetUnfolderBase]: 483/1331 cut-off events. [2024-11-07 11:19:33,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:19:33,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1331 events. 483/1331 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8498 event pairs, 396 based on Foata normal form. 0/1162 useless extension candidates. Maximal degree in co-relation 2246. Up to 909 conditions per place. [2024-11-07 11:19:33,471 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-07 11:19:33,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 274 flow [2024-11-07 11:19:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:19:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:19:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-11-07 11:19:33,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3694158075601375 [2024-11-07 11:19:33,474 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 162 flow. Second operand 6 states and 215 transitions. [2024-11-07 11:19:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 274 flow [2024-11-07 11:19:33,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 270 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:33,475 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 194 flow [2024-11-07 11:19:33,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-11-07 11:19:33,476 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2024-11-07 11:19:33,476 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 194 flow [2024-11-07 11:19:33,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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 11:19:33,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:33,477 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:33,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:19:33,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:33,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-07 11:19:33,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1446278188, now seen corresponding path program 2 times [2024-11-07 11:19:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37561800] [2024-11-07 11:19:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:33,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:33,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37561800] [2024-11-07 11:19:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37561800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405867126] [2024-11-07 11:19:33,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:19:33,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:33,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:19:33,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 11:19:33,913 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:19:33,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:19:33,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:19:33,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:33,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 11:19:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405867126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:33,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:19:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376385969] [2024-11-07 11:19:33,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:33,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:19:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:19:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:19:34,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-11-07 11:19:34,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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 11:19:34,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:34,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-11-07 11:19:34,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:34,245 INFO L124 PetriNetUnfolderBase]: 483/1337 cut-off events. [2024-11-07 11:19:34,246 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-07 11:19:34,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1337 events. 483/1337 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8496 event pairs, 396 based on Foata normal form. 6/1175 useless extension candidates. Maximal degree in co-relation 2237. Up to 909 conditions per place. [2024-11-07 11:19:34,251 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-11-07 11:19:34,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 342 flow [2024-11-07 11:19:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:19:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:19:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 386 transitions. [2024-11-07 11:19:34,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3316151202749141 [2024-11-07 11:19:34,253 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 194 flow. Second operand 12 states and 386 transitions. [2024-11-07 11:19:34,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 342 flow [2024-11-07 11:19:34,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 328 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:34,257 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 264 flow [2024-11-07 11:19:34,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-11-07 11:19:34,258 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-11-07 11:19:34,258 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 264 flow [2024-11-07 11:19:34,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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 11:19:34,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:34,259 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:34,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 11:19:34,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:34,464 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-07 11:19:34,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash -832845492, now seen corresponding path program 3 times [2024-11-07 11:19:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462045038] [2024-11-07 11:19:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:34,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:19:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:34,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:19:34,538 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:19:34,538 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 11:19:34,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-07 11:19:34,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-07 11:19:34,539 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-07 11:19:34,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:19:34,540 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-07 11:19:34,541 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:19:34,541 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 11:19:34,564 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:19:34,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 142 transitions, 300 flow [2024-11-07 11:19:34,581 INFO L124 PetriNetUnfolderBase]: 69/241 cut-off events. [2024-11-07 11:19:34,581 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 11:19:34,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 241 events. 69/241 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1106 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 145. Up to 12 conditions per place. [2024-11-07 11:19:34,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 142 transitions, 300 flow [2024-11-07 11:19:34,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 142 transitions, 300 flow [2024-11-07 11:19:34,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:19:34,585 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;@502e0ec1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:19:34,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 11:19:34,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:19:34,590 INFO L124 PetriNetUnfolderBase]: 7/53 cut-off events. [2024-11-07 11:19:34,590 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 11:19:34,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:34,590 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:34,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:19:34,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1114035380, now seen corresponding path program 1 times [2024-11-07 11:19:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054551479] [2024-11-07 11:19:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:34,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:34,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054551479] [2024-11-07 11:19:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054551479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:19:34,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:19:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:19:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753944389] [2024-11-07 11:19:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:19:34,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:19:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:19:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:19:34,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-11-07 11:19:34,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 142 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 11:19:34,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:34,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-11-07 11:19:34,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:37,087 INFO L124 PetriNetUnfolderBase]: 18464/36000 cut-off events. [2024-11-07 11:19:37,088 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-11-07 11:19:37,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62627 conditions, 36000 events. 18464/36000 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 336560 event pairs, 15876 based on Foata normal form. 8816/40294 useless extension candidates. Maximal degree in co-relation 50794. Up to 26524 conditions per place. [2024-11-07 11:19:37,285 INFO L140 encePairwiseOnDemand]: 106/142 looper letters, 68 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-11-07 11:19:37,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 376 flow [2024-11-07 11:19:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:19:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:19:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-07 11:19:37,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258215962441315 [2024-11-07 11:19:37,291 INFO L175 Difference]: Start difference. First operand has 105 places, 142 transitions, 300 flow. Second operand 3 states and 224 transitions. [2024-11-07 11:19:37,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 376 flow [2024-11-07 11:19:37,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:19:37,293 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 246 flow [2024-11-07 11:19:37,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2024-11-07 11:19:37,296 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 3 predicate places. [2024-11-07 11:19:37,297 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 246 flow [2024-11-07 11:19:37,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 11:19:37,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:37,297 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 11:19:37,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:19:37,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:19:37,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1271396929, now seen corresponding path program 1 times [2024-11-07 11:19:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855248207] [2024-11-07 11:19:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:37,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855248207] [2024-11-07 11:19:37,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855248207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:37,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105525388] [2024-11-07 11:19:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:37,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:37,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:19:37,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 11:19:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:37,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:19:37,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:37,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:37,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105525388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:37,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 11:19:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875539563] [2024-11-07 11:19:37,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:37,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:19:37,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:19:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:19:37,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-11-07 11:19:37,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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 11:19:37,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:37,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-11-07 11:19:37,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:39,349 INFO L124 PetriNetUnfolderBase]: 18464/36003 cut-off events. [2024-11-07 11:19:39,349 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-11-07 11:19:39,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62643 conditions, 36003 events. 18464/36003 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 336477 event pairs, 15876 based on Foata normal form. 0/31481 useless extension candidates. Maximal degree in co-relation 62630. Up to 26524 conditions per place. [2024-11-07 11:19:39,651 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 68 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-11-07 11:19:39,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 404 flow [2024-11-07 11:19:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:19:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:19:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2024-11-07 11:19:39,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37089201877934275 [2024-11-07 11:19:39,653 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 246 flow. Second operand 6 states and 316 transitions. [2024-11-07 11:19:39,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 404 flow [2024-11-07 11:19:39,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 400 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:39,657 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 278 flow [2024-11-07 11:19:39,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-11-07 11:19:39,660 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2024-11-07 11:19:39,660 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 278 flow [2024-11-07 11:19:39,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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 11:19:39,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:39,660 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:39,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 11:19:39,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:39,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:19:39,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -978305164, now seen corresponding path program 2 times [2024-11-07 11:19:39,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:39,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185898214] [2024-11-07 11:19:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185898214] [2024-11-07 11:19:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185898214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680926010] [2024-11-07 11:19:39,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:19:39,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:39,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:39,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 11:19:39,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 11:19:40,059 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:19:40,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:19:40,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:19:40,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:40,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 11:19:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680926010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:40,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:40,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:19:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773979058] [2024-11-07 11:19:40,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:40,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:19:40,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:19:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:19:40,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-11-07 11:19:40,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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 11:19:40,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:40,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-11-07 11:19:40,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:42,135 INFO L124 PetriNetUnfolderBase]: 18464/36009 cut-off events. [2024-11-07 11:19:42,136 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-07 11:19:42,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62680 conditions, 36009 events. 18464/36009 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 336444 event pairs, 15876 based on Foata normal form. 6/31494 useless extension candidates. Maximal degree in co-relation 62621. Up to 26524 conditions per place. [2024-11-07 11:19:42,406 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 68 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-11-07 11:19:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 119 transitions, 472 flow [2024-11-07 11:19:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:19:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:19:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 565 transitions. [2024-11-07 11:19:42,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3315727699530516 [2024-11-07 11:19:42,409 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 278 flow. Second operand 12 states and 565 transitions. [2024-11-07 11:19:42,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 119 transitions, 472 flow [2024-11-07 11:19:42,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 458 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:42,412 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 348 flow [2024-11-07 11:19:42,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-11-07 11:19:42,413 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 26 predicate places. [2024-11-07 11:19:42,413 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 348 flow [2024-11-07 11:19:42,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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 11:19:42,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:42,414 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:42,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 11:19:42,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-07 11:19:42,614 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-07 11:19:42,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2095385492, now seen corresponding path program 3 times [2024-11-07 11:19:42,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:42,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553349144] [2024-11-07 11:19:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:42,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:42,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:19:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:42,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:19:42,673 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:19:42,674 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 11:19:42,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-07 11:19:42,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-07 11:19:42,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-07 11:19:42,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-07 11:19:42,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:19:42,674 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-07 11:19:42,675 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:19:42,675 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 11:19:42,702 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:19:42,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 187 transitions, 401 flow [2024-11-07 11:19:42,728 INFO L124 PetriNetUnfolderBase]: 100/350 cut-off events. [2024-11-07 11:19:42,728 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-07 11:19:42,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 350 events. 100/350 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1814 event pairs, 1 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 250. Up to 16 conditions per place. [2024-11-07 11:19:42,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 187 transitions, 401 flow [2024-11-07 11:19:42,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 187 transitions, 401 flow [2024-11-07 11:19:42,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:19:42,736 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;@502e0ec1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:19:42,736 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-07 11:19:42,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:19:42,743 INFO L124 PetriNetUnfolderBase]: 17/104 cut-off events. [2024-11-07 11:19:42,743 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-07 11:19:42,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:42,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:19:42,743 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-07 11:19:42,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2100992122, now seen corresponding path program 1 times [2024-11-07 11:19:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042173945] [2024-11-07 11:19:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:42,787 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 11:19:42,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:42,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042173945] [2024-11-07 11:19:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042173945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:19:42,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:19:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:19:42,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510228529] [2024-11-07 11:19:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:19:42,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:19:42,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:42,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:19:42,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:19:42,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 187 [2024-11-07 11:19:42,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 11:19:42,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:42,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 187 [2024-11-07 11:19:42,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand