./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:37:25,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:37:25,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:37:25,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:37:25,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:37:25,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:37:25,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:37:25,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:37:25,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:37:25,175 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:37:25,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:37:25,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:37:25,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:37:25,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:37:25,177 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:37:25,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:37:25,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:37:25,178 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:37:25,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:37:25,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:37:25,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:37:25,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:37:25,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:37:25,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:37:25,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:37:25,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:37:25,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:37:25,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:37:25,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:37:25,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:37:25,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:37:25,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:37:25,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:25,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:37:25,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:37:25,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:37:25,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:37:25,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:37:25,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:37:25,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:37:25,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:37:25,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:37:25,187 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2024-11-09 02:37:25,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:37:25,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:37:25,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:37:25,461 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:37:25,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:37:25,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-09 02:37:26,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:37:27,134 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:37:27,134 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-11-09 02:37:27,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80723db4e/aa96d8adcb29498ea34b56c19ab212a8/FLAG32a5d30a6 [2024-11-09 02:37:27,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80723db4e/aa96d8adcb29498ea34b56c19ab212a8 [2024-11-09 02:37:27,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:37:27,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:37:27,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:27,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:37:27,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:37:27,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:27,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dcf2703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27, skipping insertion in model container [2024-11-09 02:37:27,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:27,234 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:37:27,743 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2024-11-09 02:37:27,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:27,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:37:27,877 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2024-11-09 02:37:27,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:27,949 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:37:27,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27 WrapperNode [2024-11-09 02:37:27,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:27,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:27,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:37:27,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:37:27,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:27,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,013 INFO L138 Inliner]: procedures = 272, calls = 95, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 277 [2024-11-09 02:37:28,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:28,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:37:28,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:37:28,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:37:28,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,060 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 70, 5, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 60, 5, 0]. The 5 writes are split as follows [0, 4, 0, 1]. [2024-11-09 02:37:28,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:37:28,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:37:28,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:37:28,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:37:28,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (1/1) ... [2024-11-09 02:37:28,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:28,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:37:28,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:37:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:37:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:37:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:37:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:37:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:37:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:37:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 02:37:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 02:37:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:37:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:37:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:37:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:37:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:37:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:37:28,195 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:37:28,354 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:37:28,356 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:37:28,736 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:37:28,736 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:37:29,303 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:37:29,306 INFO L316 CfgBuilder]: Removed 25 assume(true) statements. [2024-11-09 02:37:29,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:29 BoogieIcfgContainer [2024-11-09 02:37:29,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:37:29,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:37:29,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:37:29,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:37:29,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:37:27" (1/3) ... [2024-11-09 02:37:29,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df1b556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:29, skipping insertion in model container [2024-11-09 02:37:29,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:27" (2/3) ... [2024-11-09 02:37:29,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df1b556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:29, skipping insertion in model container [2024-11-09 02:37:29,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:29" (3/3) ... [2024-11-09 02:37:29,316 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2024-11-09 02:37:29,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:37:29,335 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 02:37:29,335 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:37:29,394 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 02:37:29,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 97 transitions, 201 flow [2024-11-09 02:37:29,492 INFO L124 PetriNetUnfolderBase]: 41/143 cut-off events. [2024-11-09 02:37:29,492 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:37:29,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 41/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 539 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 90. Up to 8 conditions per place. [2024-11-09 02:37:29,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 97 transitions, 201 flow [2024-11-09 02:37:29,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 95 transitions, 194 flow [2024-11-09 02:37:29,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:29,516 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;@1f1488af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:29,517 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:37:29,526 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:29,526 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-09 02:37:29,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:29,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:29,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 02:37:29,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:29,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1791212692, now seen corresponding path program 1 times [2024-11-09 02:37:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853680570] [2024-11-09 02:37:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:29,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:29,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853680570] [2024-11-09 02:37:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853680570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058537429] [2024-11-09 02:37:29,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:29,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:29,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-11-09 02:37:29,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:29,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:29,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-11-09 02:37:29,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:30,263 INFO L124 PetriNetUnfolderBase]: 483/1328 cut-off events. [2024-11-09 02:37:30,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:30,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1328 events. 483/1328 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8498 event pairs, 396 based on Foata normal form. 297/1456 useless extension candidates. Maximal degree in co-relation 2168. Up to 909 conditions per place. [2024-11-09 02:37:30,280 INFO L140 encePairwiseOnDemand]: 72/97 looper letters, 45 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-09 02:37:30,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 246 flow [2024-11-09 02:37:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-11-09 02:37:30,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5189003436426117 [2024-11-09 02:37:30,294 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 194 flow. Second operand 3 states and 151 transitions. [2024-11-09 02:37:30,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 246 flow [2024-11-09 02:37:30,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:30,302 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 162 flow [2024-11-09 02:37:30,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-09 02:37:30,309 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-11-09 02:37:30,310 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 162 flow [2024-11-09 02:37:30,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:30,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:30,310 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:30,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:37:30,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:30,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2079441551, now seen corresponding path program 1 times [2024-11-09 02:37:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:30,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567796006] [2024-11-09 02:37:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:30,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:30,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567796006] [2024-11-09 02:37:30,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567796006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:30,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884431127] [2024-11-09 02:37:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:30,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:30,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:30,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:37:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:30,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:30,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:30,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:30,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884431127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:30,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:30,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584030210] [2024-11-09 02:37:30,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:30,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:30,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:30,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-11-09 02:37:30,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:30,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:30,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-11-09 02:37:30,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:30,921 INFO L124 PetriNetUnfolderBase]: 483/1331 cut-off events. [2024-11-09 02:37:30,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:30,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1331 events. 483/1331 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8498 event pairs, 396 based on Foata normal form. 0/1162 useless extension candidates. Maximal degree in co-relation 2246. Up to 909 conditions per place. [2024-11-09 02:37:30,930 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-09 02:37:30,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 274 flow [2024-11-09 02:37:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-11-09 02:37:30,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3694158075601375 [2024-11-09 02:37:30,936 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 162 flow. Second operand 6 states and 215 transitions. [2024-11-09 02:37:30,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 274 flow [2024-11-09 02:37:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 270 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:30,939 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 194 flow [2024-11-09 02:37:30,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-11-09 02:37:30,940 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2024-11-09 02:37:30,940 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 194 flow [2024-11-09 02:37:30,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:30,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:30,941 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:30,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:37:31,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:31,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:31,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1446278188, now seen corresponding path program 2 times [2024-11-09 02:37:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785152263] [2024-11-09 02:37:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:31,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:31,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785152263] [2024-11-09 02:37:31,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785152263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:31,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774125557] [2024-11-09 02:37:31,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:31,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:31,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:31,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:31,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:37:31,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:31,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:31,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:31,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:31,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774125557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:31,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594194183] [2024-11-09 02:37:31,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:31,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:31,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-11-09 02:37:31,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:31,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:31,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-11-09 02:37:31,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:31,776 INFO L124 PetriNetUnfolderBase]: 483/1337 cut-off events. [2024-11-09 02:37:31,776 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 02:37:31,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1337 events. 483/1337 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8496 event pairs, 396 based on Foata normal form. 6/1175 useless extension candidates. Maximal degree in co-relation 2237. Up to 909 conditions per place. [2024-11-09 02:37:31,787 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-11-09 02:37:31,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 342 flow [2024-11-09 02:37:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 386 transitions. [2024-11-09 02:37:31,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3316151202749141 [2024-11-09 02:37:31,792 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 194 flow. Second operand 12 states and 386 transitions. [2024-11-09 02:37:31,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 342 flow [2024-11-09 02:37:31,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 328 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:31,797 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 264 flow [2024-11-09 02:37:31,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-11-09 02:37:31,799 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-11-09 02:37:31,799 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 264 flow [2024-11-09 02:37:31,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:31,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:31,800 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:31,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:37:32,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 02:37:32,001 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:37:32,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -832845492, now seen corresponding path program 3 times [2024-11-09 02:37:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:32,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079012616] [2024-11-09 02:37:32,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:32,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:32,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:32,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:32,095 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:32,097 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 02:37:32,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-09 02:37:32,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-09 02:37:32,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-09 02:37:32,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:37:32,101 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:32,104 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:32,104 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:37:32,135 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:37:32,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 142 transitions, 300 flow [2024-11-09 02:37:32,158 INFO L124 PetriNetUnfolderBase]: 69/241 cut-off events. [2024-11-09 02:37:32,159 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:37:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 241 events. 69/241 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1106 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 145. Up to 12 conditions per place. [2024-11-09 02:37:32,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 142 transitions, 300 flow [2024-11-09 02:37:32,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 142 transitions, 300 flow [2024-11-09 02:37:32,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:32,166 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;@1f1488af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:32,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:37:32,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:32,173 INFO L124 PetriNetUnfolderBase]: 7/53 cut-off events. [2024-11-09 02:37:32,173 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:37:32,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:32,174 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:32,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:37:32,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1114035380, now seen corresponding path program 1 times [2024-11-09 02:37:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233246196] [2024-11-09 02:37:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233246196] [2024-11-09 02:37:32,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233246196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:32,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:32,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:32,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521769889] [2024-11-09 02:37:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:32,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:32,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:32,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:32,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:32,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-11-09 02:37:32,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 142 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:32,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:32,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-11-09 02:37:32,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:35,522 INFO L124 PetriNetUnfolderBase]: 18464/36000 cut-off events. [2024-11-09 02:37:35,522 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-11-09 02:37:35,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62627 conditions, 36000 events. 18464/36000 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 336560 event pairs, 15876 based on Foata normal form. 8816/40294 useless extension candidates. Maximal degree in co-relation 50794. Up to 26524 conditions per place. [2024-11-09 02:37:35,882 INFO L140 encePairwiseOnDemand]: 106/142 looper letters, 68 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-11-09 02:37:35,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 376 flow [2024-11-09 02:37:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-09 02:37:35,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258215962441315 [2024-11-09 02:37:35,887 INFO L175 Difference]: Start difference. First operand has 105 places, 142 transitions, 300 flow. Second operand 3 states and 224 transitions. [2024-11-09 02:37:35,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 376 flow [2024-11-09 02:37:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:35,890 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 246 flow [2024-11-09 02:37:35,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2024-11-09 02:37:35,891 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 3 predicate places. [2024-11-09 02:37:35,892 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 246 flow [2024-11-09 02:37:35,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:35,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:35,892 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:35,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:37:35,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:37:35,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1271396929, now seen corresponding path program 1 times [2024-11-09 02:37:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712725760] [2024-11-09 02:37:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:35,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712725760] [2024-11-09 02:37:35,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712725760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91309187] [2024-11-09 02:37:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:35,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:35,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:35,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:37:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:36,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:36,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:36,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91309187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:36,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:36,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:36,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92498943] [2024-11-09 02:37:36,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:36,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:36,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:36,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-11-09 02:37:36,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:36,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:36,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-11-09 02:37:36,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:38,860 INFO L124 PetriNetUnfolderBase]: 18464/36003 cut-off events. [2024-11-09 02:37:38,860 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-11-09 02:37:38,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62643 conditions, 36003 events. 18464/36003 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 336477 event pairs, 15876 based on Foata normal form. 0/31481 useless extension candidates. Maximal degree in co-relation 62630. Up to 26524 conditions per place. [2024-11-09 02:37:39,046 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 68 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-11-09 02:37:39,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 404 flow [2024-11-09 02:37:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2024-11-09 02:37:39,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37089201877934275 [2024-11-09 02:37:39,049 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 246 flow. Second operand 6 states and 316 transitions. [2024-11-09 02:37:39,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 404 flow [2024-11-09 02:37:39,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 400 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:39,053 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 278 flow [2024-11-09 02:37:39,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-11-09 02:37:39,054 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2024-11-09 02:37:39,054 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 278 flow [2024-11-09 02:37:39,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:39,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:39,055 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:39,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:37:39,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:39,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:37:39,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -978305164, now seen corresponding path program 2 times [2024-11-09 02:37:39,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:39,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918131057] [2024-11-09 02:37:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918131057] [2024-11-09 02:37:39,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918131057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609705929] [2024-11-09 02:37:39,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:39,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:39,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:39,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:37:39,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:37:39,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:39,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:39,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:39,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:39,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:39,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609705929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:39,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:39,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:39,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728734920] [2024-11-09 02:37:39,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:39,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:39,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:39,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:39,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:39,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-11-09 02:37:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:39,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:39,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-11-09 02:37:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:42,235 INFO L124 PetriNetUnfolderBase]: 18464/36009 cut-off events. [2024-11-09 02:37:42,236 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-09 02:37:42,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62680 conditions, 36009 events. 18464/36009 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 336444 event pairs, 15876 based on Foata normal form. 6/31494 useless extension candidates. Maximal degree in co-relation 62621. Up to 26524 conditions per place. [2024-11-09 02:37:42,432 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 68 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-11-09 02:37:42,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 119 transitions, 472 flow [2024-11-09 02:37:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 565 transitions. [2024-11-09 02:37:42,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3315727699530516 [2024-11-09 02:37:42,440 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 278 flow. Second operand 12 states and 565 transitions. [2024-11-09 02:37:42,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 119 transitions, 472 flow [2024-11-09 02:37:42,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 458 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:42,444 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 348 flow [2024-11-09 02:37:42,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-11-09 02:37:42,447 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 26 predicate places. [2024-11-09 02:37:42,449 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 348 flow [2024-11-09 02:37:42,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:42,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:42,450 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:42,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:37:42,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:42,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:37:42,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2095385492, now seen corresponding path program 3 times [2024-11-09 02:37:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923882213] [2024-11-09 02:37:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:42,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:42,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:42,725 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:42,726 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:37:42,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:37:42,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:37:42,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:37:42,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:37:42,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:37:42,727 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:42,727 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:42,727 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:37:42,773 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:37:42,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 187 transitions, 401 flow [2024-11-09 02:37:42,802 INFO L124 PetriNetUnfolderBase]: 100/350 cut-off events. [2024-11-09 02:37:42,802 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 02:37:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 350 events. 100/350 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1814 event pairs, 1 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 250. Up to 16 conditions per place. [2024-11-09 02:37:42,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 187 transitions, 401 flow [2024-11-09 02:37:42,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 187 transitions, 401 flow [2024-11-09 02:37:42,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:42,813 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;@1f1488af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:42,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:37:42,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:42,825 INFO L124 PetriNetUnfolderBase]: 17/104 cut-off events. [2024-11-09 02:37:42,825 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 02:37:42,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:42,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:42,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:37:42,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2100992122, now seen corresponding path program 1 times [2024-11-09 02:37:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729331776] [2024-11-09 02:37:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:37:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729331776] [2024-11-09 02:37:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729331776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197857787] [2024-11-09 02:37:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:42,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:42,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 187 [2024-11-09 02:37:42,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:42,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:42,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 187 [2024-11-09 02:37:42,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand