./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/08_rand_cas.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 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/pthread-ext/08_rand_cas.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 adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:27:22,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:27:22,213 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:27:22,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:27:22,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:27:22,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:27:22,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:27:22,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:27:22,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:27:22,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:27:22,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:27:22,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:27:22,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:27:22,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:27:22,250 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:27:22,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:27:22,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:27:22,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:27:22,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:27:22,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:27:22,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:27:22,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:27:22,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:27:22,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:27:22,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:27:22,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:27:22,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:27:22,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:27:22,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:27:22,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:27:22,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:27:22,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:27:22,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:27:22,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:27:22,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:27:22,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:27:22,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:27:22,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:27:22,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:27:22,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:27:22,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:27:22,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:27:22,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:27:22,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:27:22,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:27:22,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:27:22,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:27:22,511 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:27:22,511 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:27:22,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2024-02-20 11:27:23,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:27:23,754 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:27:23,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2024-02-20 11:27:23,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa034de0a/60279768eb334cebbe8028a9bb29a470/FLAG80830e912 [2024-02-20 11:27:23,798 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa034de0a/60279768eb334cebbe8028a9bb29a470 [2024-02-20 11:27:23,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:27:23,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:27:23,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:27:23,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:27:23,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:27:23,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:27:23" (1/1) ... [2024-02-20 11:27:23,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ac8ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:23, skipping insertion in model container [2024-02-20 11:27:23,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:27:23" (1/1) ... [2024-02-20 11:27:23,884 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:27:24,229 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30697,30710] [2024-02-20 11:27:24,240 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30970,30983] [2024-02-20 11:27:24,243 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31233,31246] [2024-02-20 11:27:24,250 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:27:24,262 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:27:24,308 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30697,30710] [2024-02-20 11:27:24,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30970,30983] [2024-02-20 11:27:24,312 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31233,31246] [2024-02-20 11:27:24,314 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:27:24,342 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:27:24,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24 WrapperNode [2024-02-20 11:27:24,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:27:24,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:27:24,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:27:24,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:27:24,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,388 INFO L138 Inliner]: procedures = 176, calls = 34, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 142 [2024-02-20 11:27:24,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:27:24,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:27:24,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:27:24,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:27:24,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,412 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [6, 2, 1, 3]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2, 0, 0]. The 5 writes are split as follows [2, 0, 1, 2]. [2024-02-20 11:27:24,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:27:24,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:27:24,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:27:24,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:27:24,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (1/1) ... [2024-02-20 11:27:24,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:27:24,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:27:24,475 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) [2024-02-20 11:27:24,500 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 [2024-02-20 11:27:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:27:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:27:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:27:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:27:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-20 11:27:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-20 11:27:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:27:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:27:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:27:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:27:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:27:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:27:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:27:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:27:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:27:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:27:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:27:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:27:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:27:24,527 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:27:24,658 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:27:24,660 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:27:24,870 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:27:24,870 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:27:24,974 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:27:24,974 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-20 11:27:24,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:27:24 BoogieIcfgContainer [2024-02-20 11:27:24,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:27:24,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:27:24,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:27:24,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:27:24,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:27:23" (1/3) ... [2024-02-20 11:27:24,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd3663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:27:24, skipping insertion in model container [2024-02-20 11:27:24,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:27:24" (2/3) ... [2024-02-20 11:27:24,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd3663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:27:24, skipping insertion in model container [2024-02-20 11:27:24,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:27:24" (3/3) ... [2024-02-20 11:27:25,000 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2024-02-20 11:27:25,015 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:27:25,015 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-02-20 11:27:25,015 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:27:25,065 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-20 11:27:25,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 94 flow [2024-02-20 11:27:25,108 INFO L124 PetriNetUnfolderBase]: 10/47 cut-off events. [2024-02-20 11:27:25,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-20 11:27:25,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 10/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-02-20 11:27:25,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 94 flow [2024-02-20 11:27:25,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 94 flow [2024-02-20 11:27:25,119 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:27:25,124 INFO L369 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=All, 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;@67b105dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:27:25,124 INFO L370 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-02-20 11:27:25,127 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:27:25,127 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-20 11:27:25,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-20 11:27:25,127 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:27:25,128 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-20 11:27:25,128 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-02-20 11:27:25,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:27:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash 61154051, now seen corresponding path program 1 times [2024-02-20 11:27:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:27:25,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342011926] [2024-02-20 11:27:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:27:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:27:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:27:25,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:27:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:27:25,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:27:25,241 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:27:25,242 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-02-20 11:27:25,243 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-02-20 11:27:25,243 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-02-20 11:27:25,244 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-02-20 11:27:25,244 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-02-20 11:27:25,244 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-02-20 11:27:25,244 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-02-20 11:27:25,244 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:27:25,245 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:27:25,278 WARN L345 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:27:25,278 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-20 11:27:25,348 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-20 11:27:25,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 85 transitions, 180 flow [2024-02-20 11:27:25,394 INFO L124 PetriNetUnfolderBase]: 20/90 cut-off events. [2024-02-20 11:27:25,395 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:27:25,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 90 events. 20/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 251 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2024-02-20 11:27:25,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 85 transitions, 180 flow [2024-02-20 11:27:25,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 85 transitions, 180 flow [2024-02-20 11:27:25,401 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:27:25,402 INFO L369 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=All, 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;@67b105dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:27:25,402 INFO L370 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-02-20 11:27:25,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:27:25,407 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-02-20 11:27:25,407 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:27:25,407 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:27:25,407 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-20 11:27:25,407 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-02-20 11:27:25,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:27:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash 471915120, now seen corresponding path program 1 times [2024-02-20 11:27:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:27:25,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105638278] [2024-02-20 11:27:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:27:25,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:27:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:27:25,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:27:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:27:25,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:27:25,467 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:27:25,469 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-02-20 11:27:25,471 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2024-02-20 11:27:25,471 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2024-02-20 11:27:25,471 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2024-02-20 11:27:25,471 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2024-02-20 11:27:25,472 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2024-02-20 11:27:25,472 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2024-02-20 11:27:25,472 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2024-02-20 11:27:25,473 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2024-02-20 11:27:25,473 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2024-02-20 11:27:25,473 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:27:25,474 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:27:25,475 WARN L345 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:27:25,475 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-20 11:27:25,511 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-20 11:27:25,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 125 transitions, 268 flow [2024-02-20 11:27:25,533 INFO L124 PetriNetUnfolderBase]: 30/133 cut-off events. [2024-02-20 11:27:25,533 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-20 11:27:25,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 30/133 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 447 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2024-02-20 11:27:25,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 125 transitions, 268 flow [2024-02-20 11:27:25,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 125 transitions, 268 flow [2024-02-20 11:27:25,538 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:27:25,539 INFO L369 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=All, 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;@67b105dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:27:25,539 INFO L370 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-20 11:27:25,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:27:25,545 INFO L124 PetriNetUnfolderBase]: 3/45 cut-off events. [2024-02-20 11:27:25,545 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-20 11:27:25,545 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:27:25,545 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-02-20 11:27:25,545 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-02-20 11:27:25,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:27:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash 637565378, now seen corresponding path program 1 times [2024-02-20 11:27:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:27:25,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868742054] [2024-02-20 11:27:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:27:25,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:27:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:27:25,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:27:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:27:25,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:27:25,627 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2024-02-20 11:27:25,628 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2024-02-20 11:27:25,629 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2024-02-20 11:27:25,629 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2024-02-20 11:27:25,629 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2024-02-20 11:27:25,629 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2024-02-20 11:27:25,629 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2024-02-20 11:27:25,629 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2024-02-20 11:27:25,629 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 11:27:25,629 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:27:25,630 WARN L345 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:27:25,630 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-20 11:27:25,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-20 11:27:25,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 165 transitions, 358 flow [2024-02-20 11:27:25,711 INFO L124 PetriNetUnfolderBase]: 40/176 cut-off events. [2024-02-20 11:27:25,711 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-20 11:27:25,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 176 events. 40/176 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 659 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 159. Up to 5 conditions per place. [2024-02-20 11:27:25,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 165 transitions, 358 flow [2024-02-20 11:27:25,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 165 transitions, 358 flow [2024-02-20 11:27:25,715 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:27:25,716 INFO L369 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=All, 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;@67b105dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:27:25,716 INFO L370 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-02-20 11:27:25,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:27:25,721 INFO L124 PetriNetUnfolderBase]: 4/50 cut-off events. [2024-02-20 11:27:25,721 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-20 11:27:25,722 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:27:25,722 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:27:25,722 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-02-20 11:27:25,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:27:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash -780049682, now seen corresponding path program 1 times [2024-02-20 11:27:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:27:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503913469] [2024-02-20 11:27:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:27:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:27:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:27:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:27:25,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:27:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503913469] [2024-02-20 11:27:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503913469] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:27:25,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:27:25,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:27:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82413362] [2024-02-20 11:27:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:27:25,881 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:27:25,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:27:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:27:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:27:25,915 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 165 [2024-02-20 11:27:25,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 165 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-02-20 11:27:25,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:27:25,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 165 [2024-02-20 11:27:25,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand