./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:31:44,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:31:44,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:31:44,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:31:44,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:31:44,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:31:44,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:31:44,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:31:44,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:31:44,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:31:44,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:31:44,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:31:44,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:31:44,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:31:44,158 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:31:44,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:31:44,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:31:44,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:31:44,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:31:44,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:31:44,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:31:44,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:31:44,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:31:44,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:31:44,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:31:44,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:31:44,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:31:44,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:31:44,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:31:44,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:31:44,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:31:44,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:31:44,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:31:44,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:31:44,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:31:44,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:31:44,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:31:44,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:31:44,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:31:44,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:31:44,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:31:44,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:31:44,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:31:44,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-06-27 17:31:44,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:31:44,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:31:44,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:31:44,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:31:44,411 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:31:44,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2024-06-27 17:31:45,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:31:45,808 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:31:45,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2024-06-27 17:31:45,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d23c6086/6c70b7fdb35c411ca344a1eb8228c2d0/FLAGf167d2aa7 [2024-06-27 17:31:45,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d23c6086/6c70b7fdb35c411ca344a1eb8228c2d0 [2024-06-27 17:31:45,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:31:45,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:31:45,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:31:45,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:31:45,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:31:45,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:31:45" (1/1) ... [2024-06-27 17:31:45,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e24063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:45, skipping insertion in model container [2024-06-27 17:31:45,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:31:45" (1/1) ... [2024-06-27 17:31:45,890 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:31:46,162 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-06-27 17:31:46,191 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:31:46,202 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:31:46,242 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-06-27 17:31:46,259 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:31:46,301 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:31:46,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46 WrapperNode [2024-06-27 17:31:46,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:31:46,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:31:46,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:31:46,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:31:46,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,362 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2024-06-27 17:31:46,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:31:46,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:31:46,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:31:46,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:31:46,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,388 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-06-27 17:31:46,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:31:46,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:31:46,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:31:46,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:31:46,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (1/1) ... [2024-06-27 17:31:46,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:31:46,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:31:46,445 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) [2024-06-27 17:31:46,452 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 [2024-06-27 17:31:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 17:31:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 17:31:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 17:31:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 17:31:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 17:31:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 17:31:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 17:31:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 17:31:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 17:31:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:31:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-06-27 17:31:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 17:31:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 17:31:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-06-27 17:31:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:31:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 17:31:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 17:31:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 17:31:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 17:31:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:31:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:31:46,494 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:31:46,595 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:31:46,597 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:31:46,820 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:31:46,820 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:31:46,967 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:31:46,967 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-06-27 17:31:46,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:31:46 BoogieIcfgContainer [2024-06-27 17:31:46,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:31:46,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:31:46,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:31:46,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:31:46,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:31:45" (1/3) ... [2024-06-27 17:31:46,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9165d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:31:46, skipping insertion in model container [2024-06-27 17:31:46,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:31:46" (2/3) ... [2024-06-27 17:31:46,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9165d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:31:46, skipping insertion in model container [2024-06-27 17:31:46,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:31:46" (3/3) ... [2024-06-27 17:31:46,974 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-06-27 17:31:46,980 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:31:46,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:31:46,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:31:46,988 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:31:47,015 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-27 17:31:47,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 78 transitions, 163 flow [2024-06-27 17:31:47,073 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2024-06-27 17:31:47,074 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 17:31:47,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 26/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 397 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2024-06-27 17:31:47,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 78 transitions, 163 flow [2024-06-27 17:31:47,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 76 transitions, 156 flow [2024-06-27 17:31:47,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:31:47,101 INFO L357 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, mHoare=true, 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;@1c66a49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:31:47,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-27 17:31:47,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:31:47,112 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-06-27 17:31:47,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:31:47,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:31:47,113 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-06-27 17:31:47,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:31:47,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:31:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash -839182293, now seen corresponding path program 1 times [2024-06-27 17:31:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:31:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292343146] [2024-06-27 17:31:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:31:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:31:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:31:47,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 17:31:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:31:47,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 17:31:47,350 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 17:31:47,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-06-27 17:31:47,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-06-27 17:31:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:31:47,353 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 17:31:47,356 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 17:31:47,357 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-06-27 17:31:47,394 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 17:31:47,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 114 transitions, 244 flow [2024-06-27 17:31:47,448 INFO L124 PetriNetUnfolderBase]: 44/197 cut-off events. [2024-06-27 17:31:47,449 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-06-27 17:31:47,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 197 events. 44/197 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 859 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2024-06-27 17:31:47,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 114 transitions, 244 flow [2024-06-27 17:31:47,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 114 transitions, 244 flow [2024-06-27 17:31:47,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:31:47,459 INFO L357 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, mHoare=true, 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;@1c66a49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:31:47,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-27 17:31:47,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:31:47,473 INFO L124 PetriNetUnfolderBase]: 9/57 cut-off events. [2024-06-27 17:31:47,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 17:31:47,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:31:47,474 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-06-27 17:31:47,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:31:47,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:31:47,475 INFO L85 PathProgramCache]: Analyzing trace with hash -569024581, now seen corresponding path program 1 times [2024-06-27 17:31:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:31:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877797337] [2024-06-27 17:31:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:31:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:31:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:31:47,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 17:31:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:31:47,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 17:31:47,549 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 17:31:47,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-06-27 17:31:47,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-06-27 17:31:47,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:31:47,550 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 17:31:47,550 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 17:31:47,550 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-06-27 17:31:47,573 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 17:31:47,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 150 transitions, 327 flow [2024-06-27 17:31:47,608 INFO L124 PetriNetUnfolderBase]: 65/289 cut-off events. [2024-06-27 17:31:47,608 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2024-06-27 17:31:47,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 289 events. 65/289 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1400 event pairs, 1 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 208. Up to 12 conditions per place. [2024-06-27 17:31:47,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 150 transitions, 327 flow [2024-06-27 17:31:47,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 150 transitions, 327 flow [2024-06-27 17:31:47,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:31:47,622 INFO L357 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, mHoare=true, 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;@1c66a49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:31:47,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-27 17:31:47,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:31:47,628 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2024-06-27 17:31:47,628 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:31:47,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:31:47,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:31:47,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:31:47,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:31:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash -284203563, now seen corresponding path program 1 times [2024-06-27 17:31:47,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:31:47,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474541587] [2024-06-27 17:31:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:31:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:31:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:31:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:31:47,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:31:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474541587] [2024-06-27 17:31:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474541587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:31:47,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:31:47,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:31:47,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433854921] [2024-06-27 17:31:47,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:31:47,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:31:47,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:31:47,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:31:47,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:31:47,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 150 [2024-06-27 17:31:47,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 150 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2024-06-27 17:31:47,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:31:47,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 150 [2024-06-27 17:31:47,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:09,316 INFO L124 PetriNetUnfolderBase]: 161208/266606 cut-off events. [2024-06-27 17:32:09,316 INFO L125 PetriNetUnfolderBase]: For 4889/4889 co-relation queries the response was YES. [2024-06-27 17:32:09,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487203 conditions, 266606 events. 161208/266606 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 5632. Compared 2751968 event pairs, 100036 based on Foata normal form. 63712/316322 useless extension candidates. Maximal degree in co-relation 26830. Up to 219074 conditions per place. [2024-06-27 17:32:11,062 INFO L140 encePairwiseOnDemand]: 120/150 looper letters, 77 selfloop transitions, 2 changer transitions 1/138 dead transitions. [2024-06-27 17:32:11,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 138 transitions, 463 flow [2024-06-27 17:32:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-06-27 17:32:11,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-27 17:32:11,084 INFO L175 Difference]: Start difference. First operand has 124 places, 150 transitions, 327 flow. Second operand 3 states and 288 transitions. [2024-06-27 17:32:11,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 138 transitions, 463 flow [2024-06-27 17:32:11,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 138 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:32:11,095 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 280 flow [2024-06-27 17:32:11,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-06-27 17:32:11,100 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2024-06-27 17:32:11,100 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 280 flow [2024-06-27 17:32:11,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2024-06-27 17:32:11,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:11,101 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-06-27 17:32:11,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:32:11,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:32:11,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash 978009098, now seen corresponding path program 1 times [2024-06-27 17:32:11,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:11,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170507966] [2024-06-27 17:32:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:32:11,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 17:32:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 17:32:11,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 17:32:11,181 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 17:32:11,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-06-27 17:32:11,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-06-27 17:32:11,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:32:11,182 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-06-27 17:32:11,182 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 17:32:11,182 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-06-27 17:32:11,226 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 17:32:11,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 186 transitions, 412 flow [2024-06-27 17:32:11,270 INFO L124 PetriNetUnfolderBase]: 94/405 cut-off events. [2024-06-27 17:32:11,271 INFO L125 PetriNetUnfolderBase]: For 48/54 co-relation queries the response was YES. [2024-06-27 17:32:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 405 events. 94/405 cut-off events. For 48/54 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2058 event pairs, 6 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 313. Up to 32 conditions per place. [2024-06-27 17:32:11,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 186 transitions, 412 flow [2024-06-27 17:32:11,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 186 transitions, 412 flow [2024-06-27 17:32:11,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:32:11,287 INFO L357 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, mHoare=true, 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;@1c66a49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:32:11,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-27 17:32:11,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:32:11,292 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2024-06-27 17:32:11,292 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:32:11,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:11,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:11,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:32:11,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash -643593841, now seen corresponding path program 1 times [2024-06-27 17:32:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307417833] [2024-06-27 17:32:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:32:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307417833] [2024-06-27 17:32:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307417833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:11,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:11,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:32:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133605737] [2024-06-27 17:32:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:11,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:11,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:11,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2024-06-27 17:32:11,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-06-27 17:32:11,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:11,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2024-06-27 17:32:11,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand