./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/unwind3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX --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 ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:31:05,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:31:05,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:31:05,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:31:05,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:31:05,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:31:05,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:31:05,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:31:05,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:31:05,434 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:31:05,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:31:05,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:31:05,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:31:05,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:31:05,437 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:31:05,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:31:05,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:31:05,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:31:05,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:31:05,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:31:05,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:31:05,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:31:05,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:31:05,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:31:05,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:31:05,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:31:05,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:31:05,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:31:05,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:31:05,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:31:05,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:31:05,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:31:05,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:31:05,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:31:05,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:31:05,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:31:05,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:31:05,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:31:05,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:31:05,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:31:05,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:31:05,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:31:05,453 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe [2024-11-08 18:31:05,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:31:05,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:31:05,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:31:05,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:31:05,778 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:31:05,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-theta/unwind3-1.i Unable to find full path for "g++" [2024-11-08 18:31:07,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:31:08,065 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:31:08,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/sv-benchmarks/c/pthread-theta/unwind3-1.i [2024-11-08 18:31:08,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/data/e08707d1a/b144e7eff95b4e9c91cecd4446cc66ce/FLAGa754e2f4e [2024-11-08 18:31:08,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/data/e08707d1a/b144e7eff95b4e9c91cecd4446cc66ce [2024-11-08 18:31:08,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:31:08,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:31:08,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:31:08,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:31:08,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:31:08,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:31:08" (1/1) ... [2024-11-08 18:31:08,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e8bd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:08, skipping insertion in model container [2024-11-08 18:31:08,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:31:08" (1/1) ... [2024-11-08 18:31:08,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:31:08,967 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/sv-benchmarks/c/pthread-theta/unwind3-1.i[33026,33039] [2024-11-08 18:31:08,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:31:09,004 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:31:09,055 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/sv-benchmarks/c/pthread-theta/unwind3-1.i[33026,33039] [2024-11-08 18:31:09,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:31:09,106 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:31:09,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09 WrapperNode [2024-11-08 18:31:09,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:31:09,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:31:09,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:31:09,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:31:09,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,168 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-11-08 18:31:09,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:31:09,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:31:09,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:31:09,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:31:09,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,212 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:31:09,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:31:09,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:31:09,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:31:09,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:31:09,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (1/1) ... [2024-11-08 18:31:09,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:31:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:09,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:31:09,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:31:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:31:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-08 18:31:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-08 18:31:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-08 18:31:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-08 18:31:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:31:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:31:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:31:09,323 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:31:09,487 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:31:09,489 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:31:09,655 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:31:09,655 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:31:09,780 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:31:09,780 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:31:09,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:31:09 BoogieIcfgContainer [2024-11-08 18:31:09,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:31:09,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:31:09,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:31:09,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:31:09,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:31:08" (1/3) ... [2024-11-08 18:31:09,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5861e600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:31:09, skipping insertion in model container [2024-11-08 18:31:09,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:09" (2/3) ... [2024-11-08 18:31:09,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5861e600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:31:09, skipping insertion in model container [2024-11-08 18:31:09,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:31:09" (3/3) ... [2024-11-08 18:31:09,795 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2024-11-08 18:31:09,810 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:31:09,810 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:31:09,810 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:31:09,855 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 18:31:09,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 64 flow [2024-11-08 18:31:09,943 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2024-11-08 18:31:09,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:31:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 8/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 24. Up to 4 conditions per place. [2024-11-08 18:31:09,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 28 transitions, 64 flow [2024-11-08 18:31:09,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 55 flow [2024-11-08 18:31:09,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:31:09,972 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f6439b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:31:09,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 18:31:09,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:31:09,983 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-08 18:31:09,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:31:09,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:09,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:09,984 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 18:31:09,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:09,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1047008800, now seen corresponding path program 1 times [2024-11-08 18:31:10,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:10,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819408447] [2024-11-08 18:31:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:10,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:10,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819408447] [2024-11-08 18:31:10,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819408447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:31:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556319747] [2024-11-08 18:31:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:10,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:31:10,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:31:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:10,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:31:10,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:31:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:10,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:31:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556319747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:31:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:31:10,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15835661] [2024-11-08 18:31:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:10,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:31:10,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:31:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:31:10,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-11-08 18:31:10,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:10,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:10,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-11-08 18:31:10,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:10,771 INFO L124 PetriNetUnfolderBase]: 41/116 cut-off events. [2024-11-08 18:31:10,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:31:10,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 116 events. 41/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 374 event pairs, 8 based on Foata normal form. 3/111 useless extension candidates. Maximal degree in co-relation 147. Up to 59 conditions per place. [2024-11-08 18:31:10,780 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 14 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2024-11-08 18:31:10,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 100 flow [2024-11-08 18:31:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:31:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:31:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-08 18:31:10,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-08 18:31:10,794 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 55 flow. Second operand 5 states and 80 transitions. [2024-11-08 18:31:10,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 100 flow [2024-11-08 18:31:10,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:31:10,801 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 66 flow [2024-11-08 18:31:10,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2024-11-08 18:31:10,807 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-11-08 18:31:10,807 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 66 flow [2024-11-08 18:31:10,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:10,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:10,808 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:10,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:31:11,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-08 18:31:11,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 18:31:11,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2054211864, now seen corresponding path program 1 times [2024-11-08 18:31:11,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:11,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496394408] [2024-11-08 18:31:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:11,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496394408] [2024-11-08 18:31:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496394408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:11,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:31:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247051019] [2024-11-08 18:31:11,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:11,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:11,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:11,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-08 18:31:11,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:11,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:11,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-08 18:31:11,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:11,257 INFO L124 PetriNetUnfolderBase]: 36/96 cut-off events. [2024-11-08 18:31:11,258 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-08 18:31:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 96 events. 36/96 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 255 event pairs, 14 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 164. Up to 58 conditions per place. [2024-11-08 18:31:11,259 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 13 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-11-08 18:31:11,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 96 flow [2024-11-08 18:31:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:31:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:31:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-08 18:31:11,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-08 18:31:11,261 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 66 flow. Second operand 4 states and 62 transitions. [2024-11-08 18:31:11,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 96 flow [2024-11-08 18:31:11,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:31:11,263 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 62 flow [2024-11-08 18:31:11,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-11-08 18:31:11,264 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-11-08 18:31:11,264 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 62 flow [2024-11-08 18:31:11,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:11,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:11,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:11,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:31:11,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 18:31:11,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1177258238, now seen corresponding path program 1 times [2024-11-08 18:31:11,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:11,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103306701] [2024-11-08 18:31:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:11,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103306701] [2024-11-08 18:31:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103306701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:11,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:11,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:31:11,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026065038] [2024-11-08 18:31:11,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:11,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:31:11,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:31:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:31:11,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-11-08 18:31:11,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:11,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:11,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-11-08 18:31:11,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:11,595 INFO L124 PetriNetUnfolderBase]: 61/145 cut-off events. [2024-11-08 18:31:11,596 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-08 18:31:11,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 145 events. 61/145 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 29 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 248. Up to 70 conditions per place. [2024-11-08 18:31:11,598 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 14 selfloop transitions, 3 changer transitions 4/30 dead transitions. [2024-11-08 18:31:11,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 120 flow [2024-11-08 18:31:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:31:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:31:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-11-08 18:31:11,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-08 18:31:11,600 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 5 states and 82 transitions. [2024-11-08 18:31:11,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 120 flow [2024-11-08 18:31:11,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:31:11,602 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 72 flow [2024-11-08 18:31:11,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2024-11-08 18:31:11,603 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2024-11-08 18:31:11,603 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 72 flow [2024-11-08 18:31:11,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:11,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:11,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:11,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:31:11,605 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 18:31:11,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1799096481, now seen corresponding path program 1 times [2024-11-08 18:31:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:11,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291946011] [2024-11-08 18:31:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291946011] [2024-11-08 18:31:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291946011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:31:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794451513] [2024-11-08 18:31:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:11,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:11,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:11,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:31:11,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:31:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:11,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:31:11,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:31:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:12,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:31:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:12,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794451513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:31:12,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:31:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 18:31:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075118617] [2024-11-08 18:31:12,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:31:12,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:31:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:31:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:31:12,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-11-08 18:31:12,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 72 flow. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:12,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:12,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-11-08 18:31:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:12,445 INFO L124 PetriNetUnfolderBase]: 74/176 cut-off events. [2024-11-08 18:31:12,445 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-08 18:31:12,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 176 events. 74/176 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 581 event pairs, 29 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 337. Up to 70 conditions per place. [2024-11-08 18:31:12,448 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 17 selfloop transitions, 4 changer transitions 4/34 dead transitions. [2024-11-08 18:31:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 148 flow [2024-11-08 18:31:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:31:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:31:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-11-08 18:31:12,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-08 18:31:12,450 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 72 flow. Second operand 6 states and 98 transitions. [2024-11-08 18:31:12,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 148 flow [2024-11-08 18:31:12,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 142 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:31:12,453 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 86 flow [2024-11-08 18:31:12,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2024-11-08 18:31:12,454 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-11-08 18:31:12,454 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 86 flow [2024-11-08 18:31:12,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 11 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:12,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:12,455 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:12,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:31:12,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:12,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 18:31:12,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1909773436, now seen corresponding path program 2 times [2024-11-08 18:31:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:12,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940234017] [2024-11-08 18:31:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:12,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:12,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:12,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940234017] [2024-11-08 18:31:12,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940234017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:31:12,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603304065] [2024-11-08 18:31:12,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:31:12,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:12,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:12,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:31:12,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:31:12,923 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:31:12,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:31:12,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:31:12,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:31:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:13,007 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:31:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603304065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:13,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:31:13,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:31:13,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469644292] [2024-11-08 18:31:13,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:13,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:31:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:31:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:31:13,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-08 18:31:13,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:13,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:13,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-08 18:31:13,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:13,270 INFO L124 PetriNetUnfolderBase]: 86/196 cut-off events. [2024-11-08 18:31:13,271 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-08 18:31:13,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 196 events. 86/196 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 620 event pairs, 18 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 422. Up to 78 conditions per place. [2024-11-08 18:31:13,273 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 19 selfloop transitions, 2 changer transitions 15/43 dead transitions. [2024-11-08 18:31:13,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 215 flow [2024-11-08 18:31:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:31:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 18:31:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-11-08 18:31:13,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-08 18:31:13,277 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 86 flow. Second operand 8 states and 124 transitions. [2024-11-08 18:31:13,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 215 flow [2024-11-08 18:31:13,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 201 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-08 18:31:13,282 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 92 flow [2024-11-08 18:31:13,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2024-11-08 18:31:13,282 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2024-11-08 18:31:13,283 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 92 flow [2024-11-08 18:31:13,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:13,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:13,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:13,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:31:13,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:13,489 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 18:31:13,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2102336863, now seen corresponding path program 1 times [2024-11-08 18:31:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691196093] [2024-11-08 18:31:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:13,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:31:13,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:31:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:31:13,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:31:13,552 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:31:13,553 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-08 18:31:13,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-08 18:31:13,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-08 18:31:13,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-08 18:31:13,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:31:13,555 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-08 18:31:13,588 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 18:31:13,588 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 18:31:13,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 06:31:13 BasicIcfg [2024-11-08 18:31:13,593 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 18:31:13,594 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 18:31:13,594 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 18:31:13,594 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 18:31:13,595 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:31:09" (3/4) ... [2024-11-08 18:31:13,596 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 18:31:13,654 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 18:31:13,654 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 18:31:13,655 INFO L158 Benchmark]: Toolchain (without parser) took 5250.72ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 129.0MB in the beginning and 117.7MB in the end (delta: 11.3MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,655 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 18:31:13,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 701.19ms. Allocated memory is still 163.6MB. Free memory was 128.6MB in the beginning and 106.3MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.04ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 104.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,656 INFO L158 Benchmark]: Boogie Preprocessor took 66.72ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,657 INFO L158 Benchmark]: RCFGBuilder took 543.27ms. Allocated memory is still 163.6MB. Free memory was 102.2MB in the beginning and 131.4MB in the end (delta: -29.2MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,657 INFO L158 Benchmark]: TraceAbstraction took 3810.88ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 130.6MB in the beginning and 121.9MB in the end (delta: 8.7MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,658 INFO L158 Benchmark]: Witness Printer took 60.55ms. Allocated memory is still 218.1MB. Free memory was 121.9MB in the beginning and 117.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 18:31:13,660 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 701.19ms. Allocated memory is still 163.6MB. Free memory was 128.6MB in the beginning and 106.3MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.04ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 104.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.72ms. Allocated memory is still 163.6MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.27ms. Allocated memory is still 163.6MB. Free memory was 102.2MB in the beginning and 131.4MB in the end (delta: -29.2MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3810.88ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 130.6MB in the beginning and 121.9MB in the end (delta: 8.7MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Witness Printer took 60.55ms. Allocated memory is still 218.1MB. Free memory was 121.9MB in the beginning and 117.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = 1 [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=1, limit=1] [L773] 0 int i = 0; VAL [_N=1, i=0, limit=1] [L773] COND FALSE 0 !(i < _N) VAL [_N=1, i=0, limit=1] [L773] COND TRUE 0 i < _N [L774] 0 pthread_t t; [L775] FCALL, FORK 0 pthread_create(&t, 0, f1, 0) VAL [\old(arg)={0:0}, _N=1, i=0, limit=1, t=-1] [L773] 0 ++i VAL [\old(arg)={0:0}, _N=1, i=1, limit=1] [L773] COND TRUE 0 i < _N VAL [\old(arg)={0:0}, _N=1, i=1, limit=1] [L777] 0 pthread_t t; [L757] 1 int l; [L758] 1 l = limit VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=1] [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=1, t=0] [L759] 1 limit = l + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] [L763] 2 int i, bound; [L764] 2 bound = limit [L765] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, l=1, limit=2] [L765] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, l=1, limit=2] [L765] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, l=1, limit=2] [L765] COND TRUE 2 i < bound VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, l=1, limit=2] [L766] CALL 2 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 2 !expression VAL [\old(arg)={0:0}, \old(expression)=0, _N=1, arg={0:0}, expression=0, l=1, limit=2] [L753] 2 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, _N=1, arg={0:0}, expression=0, l=1, limit=2] - UnprovableResult [Line: 775]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 269 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 216 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 11 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 9 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 18/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-08 18:31:13,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51fb7239-e694-4444-9a5d-8e3ffb58d16a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE