./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_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_73-funloop_hard_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', 'c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5'] 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_73-funloop_hard_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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:19:38,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:19:38,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:19:38,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:19:38,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:19:38,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:19:38,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:19:38,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:19:38,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:19:38,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:19:38,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:19:38,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:19:38,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:19:38,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:19:38,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:19:38,296 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:19:38,297 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:19:38,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:19:38,297 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:19:38,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:19:38,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:19:38,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:19:38,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:19:38,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:19:38,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:19:38,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:19:38,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:19:38,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:19:38,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:19:38,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:19:38,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:19:38,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:19:38,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:19:38,301 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 -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-11-07 11:19:38,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:19:38,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:19:38,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:19:38,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:19:38,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:19:38,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-07 11:19:40,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:19:40,369 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:19:40,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-07 11:19:40,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/236dac525/dad1c018d6b64026abaaf915f6ef4b7d/FLAGd09f1e9ac [2024-11-07 11:19:40,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/236dac525/dad1c018d6b64026abaaf915f6ef4b7d [2024-11-07 11:19:40,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:19:40,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:19:40,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:19:40,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:19:40,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:19:40,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:40" (1/1) ... [2024-11-07 11:19:40,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170160a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:40, skipping insertion in model container [2024-11-07 11:19:40,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:40" (1/1) ... [2024-11-07 11:19:40,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:19:40,972 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_73-funloop_hard_racefree.i[41323,41336] [2024-11-07 11:19:41,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:19:41,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:19:41,106 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_73-funloop_hard_racefree.i[41323,41336] [2024-11-07 11:19:41,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:19:41,192 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:19:41,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41 WrapperNode [2024-11-07 11:19:41,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:19:41,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:19:41,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:19:41,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:19:41,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,253 INFO L138 Inliner]: procedures = 272, calls = 109, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 344 [2024-11-07 11:19:41,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:19:41,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:19:41,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:19:41,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:19:41,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,267 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,283 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2024-11-07 11:19:41,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:19:41,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:19:41,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:19:41,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:19:41,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (1/1) ... [2024-11-07 11:19:41,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:19:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:41,350 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 11:19:41,359 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 11:19:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 11:19:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 11:19:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 11:19:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 11:19:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:19:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:19:41,381 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 11:19:41,572 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:19:41,574 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:19:42,060 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:19:42,061 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:19:42,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:19:42,613 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-07 11:19:42,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:42 BoogieIcfgContainer [2024-11-07 11:19:42,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:19:42,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:19:42,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:19:42,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:19:42,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:19:40" (1/3) ... [2024-11-07 11:19:42,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4bd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:42, skipping insertion in model container [2024-11-07 11:19:42,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:41" (2/3) ... [2024-11-07 11:19:42,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4bd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:42, skipping insertion in model container [2024-11-07 11:19:42,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:42" (3/3) ... [2024-11-07 11:19:42,625 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-11-07 11:19:42,641 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:19:42,642 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-07 11:19:42,642 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:19:42,707 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 11:19:42,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 137 transitions, 281 flow [2024-11-07 11:19:42,848 INFO L124 PetriNetUnfolderBase]: 65/223 cut-off events. [2024-11-07 11:19:42,851 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 11:19:42,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 223 events. 65/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1052 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2024-11-07 11:19:42,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 137 transitions, 281 flow [2024-11-07 11:19:42,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 135 transitions, 274 flow [2024-11-07 11:19:42,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:19:42,890 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;@3e6cc743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:19:42,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 11:19:42,906 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:19:42,907 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-07 11:19:42,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:19:42,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:42,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-07 11:19:42,909 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:19:42,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -646762366, now seen corresponding path program 1 times [2024-11-07 11:19:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001848820] [2024-11-07 11:19:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:43,256 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 11:19:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001848820] [2024-11-07 11:19:43,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001848820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:19:43,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:19:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:19:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408299814] [2024-11-07 11:19:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:19:43,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:19:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:19:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:19:43,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-07 11:19:43,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 135 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 11:19:43,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:43,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-07 11:19:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:43,789 INFO L124 PetriNetUnfolderBase]: 823/2254 cut-off events. [2024-11-07 11:19:43,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:19:43,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 2254 events. 823/2254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16735 event pairs, 684 based on Foata normal form. 541/2536 useless extension candidates. Maximal degree in co-relation 3684. Up to 1544 conditions per place. [2024-11-07 11:19:43,819 INFO L140 encePairwiseOnDemand]: 101/137 looper letters, 61 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-11-07 11:19:43,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 336 flow [2024-11-07 11:19:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:19:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:19:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-07 11:19:43,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5279805352798054 [2024-11-07 11:19:43,837 INFO L175 Difference]: Start difference. First operand has 99 places, 135 transitions, 274 flow. Second operand 3 states and 217 transitions. [2024-11-07 11:19:43,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 336 flow [2024-11-07 11:19:43,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:19:43,847 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 220 flow [2024-11-07 11:19:43,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-07 11:19:43,852 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-11-07 11:19:43,853 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 220 flow [2024-11-07 11:19:43,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 11:19:43,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:43,855 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 11:19:43,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:19:43,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:19:43,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1067654764, now seen corresponding path program 1 times [2024-11-07 11:19:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611374735] [2024-11-07 11:19:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:44,029 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 11:19:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611374735] [2024-11-07 11:19:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611374735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547254763] [2024-11-07 11:19:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:44,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:44,033 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 11:19:44,035 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 11:19:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:44,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:19:44,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:44,187 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 11:19:44,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:44,213 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 11:19:44,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547254763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:44,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:44,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 11:19:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971283848] [2024-11-07 11:19:44,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:44,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:19:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:19:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:19:44,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-07 11:19:44,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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 11:19:44,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:44,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-07 11:19:44,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:44,660 INFO L124 PetriNetUnfolderBase]: 823/2257 cut-off events. [2024-11-07 11:19:44,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:19:44,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 2257 events. 823/2257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16738 event pairs, 684 based on Foata normal form. 0/1998 useless extension candidates. Maximal degree in co-relation 3807. Up to 1544 conditions per place. [2024-11-07 11:19:44,676 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 61 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-07 11:19:44,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 364 flow [2024-11-07 11:19:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:19:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:19:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 309 transitions. [2024-11-07 11:19:44,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3759124087591241 [2024-11-07 11:19:44,680 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 220 flow. Second operand 6 states and 309 transitions. [2024-11-07 11:19:44,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 364 flow [2024-11-07 11:19:44,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:44,684 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 252 flow [2024-11-07 11:19:44,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2024-11-07 11:19:44,685 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2024-11-07 11:19:44,685 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 252 flow [2024-11-07 11:19:44,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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 11:19:44,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:44,687 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:44,710 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 11:19:44,891 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 11:19:44,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:19:44,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 517989634, now seen corresponding path program 2 times [2024-11-07 11:19:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918461188] [2024-11-07 11:19:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:45,105 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 11:19:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918461188] [2024-11-07 11:19:45,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918461188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:45,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502550942] [2024-11-07 11:19:45,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:19:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:45,110 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 11:19:45,112 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 11:19:45,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:19:45,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:19:45,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:19:45,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:45,251 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 11:19:45,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:45,314 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 11:19:45,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502550942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:45,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:45,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:19:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824093098] [2024-11-07 11:19:45,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:45,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:19:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:19:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:19:45,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-07 11:19:45,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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 11:19:45,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:45,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-07 11:19:45,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:45,695 INFO L124 PetriNetUnfolderBase]: 823/2263 cut-off events. [2024-11-07 11:19:45,696 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-07 11:19:45,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 2263 events. 823/2263 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16730 event pairs, 684 based on Foata normal form. 6/2011 useless extension candidates. Maximal degree in co-relation 3798. Up to 1544 conditions per place. [2024-11-07 11:19:45,709 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 61 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-11-07 11:19:45,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 432 flow [2024-11-07 11:19:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:19:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:19:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 558 transitions. [2024-11-07 11:19:45,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33941605839416056 [2024-11-07 11:19:45,714 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 252 flow. Second operand 12 states and 558 transitions. [2024-11-07 11:19:45,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 432 flow [2024-11-07 11:19:45,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 112 transitions, 418 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:45,718 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 322 flow [2024-11-07 11:19:45,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=322, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2024-11-07 11:19:45,719 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 26 predicate places. [2024-11-07 11:19:45,719 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 322 flow [2024-11-07 11:19:45,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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 11:19:45,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:45,720 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:45,740 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 11:19:45,920 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 11:19:45,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 11:19:45,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash 753810370, now seen corresponding path program 3 times [2024-11-07 11:19:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249132726] [2024-11-07 11:19:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:45,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:19:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:19:46,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:19:46,049 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:19:46,051 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 11:19:46,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-07 11:19:46,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-07 11:19:46,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-07 11:19:46,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-07 11:19:46,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:19:46,054 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-07 11:19:46,056 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:19:46,056 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 11:19:46,103 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:19:46,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 182 transitions, 380 flow [2024-11-07 11:19:46,145 INFO L124 PetriNetUnfolderBase]: 105/361 cut-off events. [2024-11-07 11:19:46,145 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 11:19:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 361 events. 105/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1960 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 225. Up to 12 conditions per place. [2024-11-07 11:19:46,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 182 transitions, 380 flow [2024-11-07 11:19:46,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 182 transitions, 380 flow [2024-11-07 11:19:46,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:19:46,160 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;@3e6cc743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:19:46,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-07 11:19:46,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:19:46,170 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-11-07 11:19:46,170 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:19:46,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:46,170 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:46,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 11:19:46,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1844086936, now seen corresponding path program 1 times [2024-11-07 11:19:46,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:46,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632551083] [2024-11-07 11:19:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:46,244 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 11:19:46,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632551083] [2024-11-07 11:19:46,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632551083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:19:46,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:19:46,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:19:46,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085766363] [2024-11-07 11:19:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:19:46,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:19:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:19:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:19:46,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-07 11:19:46,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 182 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 11:19:46,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:46,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-07 11:19:46,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:51,481 INFO L124 PetriNetUnfolderBase]: 31325/60557 cut-off events. [2024-11-07 11:19:51,483 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-07 11:19:51,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105651 conditions, 60557 events. 31325/60557 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609057 event pairs, 27108 based on Foata normal form. 15651/69105 useless extension candidates. Maximal degree in co-relation 85934. Up to 44991 conditions per place. [2024-11-07 11:19:51,886 INFO L140 encePairwiseOnDemand]: 135/182 looper letters, 84 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-11-07 11:19:51,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 466 flow [2024-11-07 11:19:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:19:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:19:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-07 11:19:51,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5311355311355311 [2024-11-07 11:19:51,887 INFO L175 Difference]: Start difference. First operand has 133 places, 182 transitions, 380 flow. Second operand 3 states and 290 transitions. [2024-11-07 11:19:51,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 466 flow [2024-11-07 11:19:51,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 139 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 11:19:51,891 INFO L231 Difference]: Finished difference. Result has 136 places, 139 transitions, 304 flow [2024-11-07 11:19:51,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=136, PETRI_TRANSITIONS=139} [2024-11-07 11:19:51,892 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2024-11-07 11:19:51,892 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 139 transitions, 304 flow [2024-11-07 11:19:51,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 11:19:51,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:51,893 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 11:19:51,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:19:51,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 11:19:51,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash 27355724, now seen corresponding path program 1 times [2024-11-07 11:19:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:51,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619856913] [2024-11-07 11:19:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:51,975 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 11:19:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619856913] [2024-11-07 11:19:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619856913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909601949] [2024-11-07 11:19:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:51,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:51,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:51,979 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 11:19:51,980 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 11:19:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:52,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 11:19:52,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:52,099 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 11:19:52,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:52,114 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 11:19:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909601949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:52,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:52,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 11:19:52,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613571617] [2024-11-07 11:19:52,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:52,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:19:52,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:19:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:19:52,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-07 11:19:52,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 139 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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 11:19:52,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:52,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-07 11:19:52,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:19:55,890 INFO L124 PetriNetUnfolderBase]: 31325/60560 cut-off events. [2024-11-07 11:19:55,890 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-07 11:19:56,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105667 conditions, 60560 events. 31325/60560 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609001 event pairs, 27108 based on Foata normal form. 0/53457 useless extension candidates. Maximal degree in co-relation 105654. Up to 44991 conditions per place. [2024-11-07 11:19:56,241 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 84 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2024-11-07 11:19:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 494 flow [2024-11-07 11:19:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:19:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:19:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2024-11-07 11:19:56,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37545787545787546 [2024-11-07 11:19:56,245 INFO L175 Difference]: Start difference. First operand has 136 places, 139 transitions, 304 flow. Second operand 6 states and 410 transitions. [2024-11-07 11:19:56,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 494 flow [2024-11-07 11:19:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 11:19:56,250 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 336 flow [2024-11-07 11:19:56,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2024-11-07 11:19:56,253 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 10 predicate places. [2024-11-07 11:19:56,254 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 336 flow [2024-11-07 11:19:56,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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 11:19:56,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:19:56,255 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-07 11:19:56,273 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 11:19:56,455 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 11:19:56,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 11:19:56,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:19:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash 250417256, now seen corresponding path program 2 times [2024-11-07 11:19:56,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:19:56,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392390578] [2024-11-07 11:19:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:19:56,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:19:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:19:56,599 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 11:19:56,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:19:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392390578] [2024-11-07 11:19:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392390578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:19:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078994018] [2024-11-07 11:19:56,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:19:56,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:19:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:19:56,604 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 11:19:56,606 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 11:19:56,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:19:56,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:19:56,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 11:19:56,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:19:56,740 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 11:19:56,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:19:56,800 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 11:19:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078994018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:19:56,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:19:56,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 11:19:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489908920] [2024-11-07 11:19:56,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:19:56,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:19:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:19:56,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:19:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:19:56,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-07 11:19:56,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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 11:19:56,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:19:56,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-07 11:19:56,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:20:00,620 INFO L124 PetriNetUnfolderBase]: 31325/60566 cut-off events. [2024-11-07 11:20:00,620 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-07 11:20:00,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105704 conditions, 60566 events. 31325/60566 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609178 event pairs, 27108 based on Foata normal form. 6/53470 useless extension candidates. Maximal degree in co-relation 105645. Up to 44991 conditions per place. [2024-11-07 11:20:01,225 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 84 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2024-11-07 11:20:01,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 148 transitions, 562 flow [2024-11-07 11:20:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 11:20:01,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 11:20:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 737 transitions. [2024-11-07 11:20:01,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3374542124542125 [2024-11-07 11:20:01,231 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 336 flow. Second operand 12 states and 737 transitions. [2024-11-07 11:20:01,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 148 transitions, 562 flow [2024-11-07 11:20:01,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 148 transitions, 548 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 11:20:01,236 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 406 flow [2024-11-07 11:20:01,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=406, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2024-11-07 11:20:01,237 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 26 predicate places. [2024-11-07 11:20:01,237 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 406 flow [2024-11-07 11:20:01,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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 11:20:01,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:01,239 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-07 11:20:01,258 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 11:20:01,442 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 11:20:01,443 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 11:20:01,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 32114152, now seen corresponding path program 3 times [2024-11-07 11:20:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574268622] [2024-11-07 11:20:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:20:01,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 11:20:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 11:20:01,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 11:20:01,518 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 11:20:01,518 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-07 11:20:01,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-07 11:20:01,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-07 11:20:01,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-07 11:20:01,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-07 11:20:01,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-07 11:20:01,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 11:20:01,520 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-07 11:20:01,521 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 11:20:01,521 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 11:20:01,572 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 11:20:01,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 227 transitions, 481 flow [2024-11-07 11:20:01,627 INFO L124 PetriNetUnfolderBase]: 148/510 cut-off events. [2024-11-07 11:20:01,628 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-07 11:20:01,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 510 events. 148/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2942 event pairs, 1 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2024-11-07 11:20:01,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 227 transitions, 481 flow [2024-11-07 11:20:01,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 227 transitions, 481 flow [2024-11-07 11:20:01,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:20:01,642 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;@3e6cc743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:20:01,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 11:20:01,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:20:01,653 INFO L124 PetriNetUnfolderBase]: 25/139 cut-off events. [2024-11-07 11:20:01,653 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 11:20:01,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:20:01,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:20:01,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 11:20:01,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:20:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash 186627446, now seen corresponding path program 1 times [2024-11-07 11:20:01,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:20:01,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920028144] [2024-11-07 11:20:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:20:01,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:20:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:20:01,721 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 11:20:01,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:20:01,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920028144] [2024-11-07 11:20:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920028144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:20:01,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:20:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:20:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062038415] [2024-11-07 11:20:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:20:01,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:20:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:20:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:20:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:20:01,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 227 [2024-11-07 11:20:01,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 227 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 11:20:01,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:20:01,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 227 [2024-11-07 11:20:01,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand