./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1 --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 9f07ddd0bf7ae4134116576ef500b9c6d91475d3c23175717b2cac1146eab3b3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:07:29,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:07:29,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:07:29,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:07:29,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:07:29,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:07:29,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:07:29,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:07:29,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:07:29,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:07:29,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:07:29,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:07:29,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:07:29,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:07:29,697 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:07:29,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:07:29,698 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:07:29,699 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:07:29,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:07:29,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:07:29,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:07:29,700 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1 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 -> 9f07ddd0bf7ae4134116576ef500b9c6d91475d3c23175717b2cac1146eab3b3 [2024-12-02 15:07:29,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:07:29,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:07:29,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:07:29,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:07:29,947 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:07:29,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-ext/25_stack.i [2024-12-02 15:07:32,587 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/data/e9af30a84/193d5d357073463d82e09e766a194f1a/FLAGaea9a1669 [2024-12-02 15:07:32,834 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:07:32,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/sv-benchmarks/c/pthread-ext/25_stack.i [2024-12-02 15:07:32,846 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/data/e9af30a84/193d5d357073463d82e09e766a194f1a/FLAGaea9a1669 [2024-12-02 15:07:32,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/data/e9af30a84/193d5d357073463d82e09e766a194f1a [2024-12-02 15:07:32,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:07:32,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:07:32,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:07:32,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:07:32,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:07:32,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:07:32" (1/1) ... [2024-12-02 15:07:32,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@faecaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:32, skipping insertion in model container [2024-12-02 15:07:32,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:07:32" (1/1) ... [2024-12-02 15:07:32,896 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:07:33,183 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_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/sv-benchmarks/c/pthread-ext/25_stack.i[31336,31349] [2024-12-02 15:07:33,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:07:33,212 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:07:33,247 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_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/sv-benchmarks/c/pthread-ext/25_stack.i[31336,31349] [2024-12-02 15:07:33,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:07:33,279 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:07:33,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33 WrapperNode [2024-12-02 15:07:33,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:07:33,280 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:07:33,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:07:33,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:07:33,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,310 INFO L138 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 195 [2024-12-02 15:07:33,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:07:33,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:07:33,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:07:33,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:07:33,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,335 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-12-02 15:07:33,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,340 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:07:33,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:07:33,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:07:33,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:07:33,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (1/1) ... [2024-12-02 15:07:33,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:07:33,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:07:33,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:07:33,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_036d9e0d-4efd-40f4-9973-6c91d4ea5ecc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:07:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-12-02 15:07:33,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-12-02 15:07:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 15:07:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 15:07:33,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:07:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:07:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:07:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:07:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 15:07:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 15:07:33,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:07:33,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:07:33,391 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 15:07:33,491 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:07:33,492 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:07:33,759 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 15:07:33,759 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:07:34,112 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:07:34,113 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 15:07:34,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:07:34 BoogieIcfgContainer [2024-12-02 15:07:34,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:07:34,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:07:34,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:07:34,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:07:34,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:07:32" (1/3) ... [2024-12-02 15:07:34,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:07:34, skipping insertion in model container [2024-12-02 15:07:34,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:07:33" (2/3) ... [2024-12-02 15:07:34,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:07:34, skipping insertion in model container [2024-12-02 15:07:34,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:07:34" (3/3) ... [2024-12-02 15:07:34,122 INFO L128 eAbstractionObserver]: Analyzing ICFG 25_stack.i [2024-12-02 15:07:34,145 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:07:34,147 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 25_stack.i that has 2 procedures, 31 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-02 15:07:34,147 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 15:07:34,199 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:07:34,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 35 transitions, 74 flow [2024-12-02 15:07:34,260 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2024-12-02 15:07:34,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:07:34,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 4/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-12-02 15:07:34,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 35 transitions, 74 flow [2024-12-02 15:07:34,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 35 transitions, 74 flow [2024-12-02 15:07:34,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:07:34,284 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;@5a91d3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:07:34,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-12-02 15:07:34,291 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:07:34,291 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-12-02 15:07:34,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:07:34,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:07:34,292 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 15:07:34,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:07:34,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:07:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1889418935, now seen corresponding path program 1 times [2024-12-02 15:07:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:07:34,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488461438] [2024-12-02 15:07:34,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:07:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:07:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:34,903 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:07:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:34,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:07:34,958 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:07:34,959 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-12-02 15:07:34,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-12-02 15:07:34,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-12-02 15:07:34,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:07:34,962 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:07:34,965 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:07:34,965 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 15:07:35,020 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:07:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 65 transitions, 140 flow [2024-12-02 15:07:35,048 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-12-02 15:07:35,048 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 15:07:35,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-12-02 15:07:35,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 65 transitions, 140 flow [2024-12-02 15:07:35,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 140 flow [2024-12-02 15:07:35,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:07:35,053 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;@5a91d3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:07:35,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 15:07:35,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:07:35,065 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-12-02 15:07:35,065 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 15:07:35,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:07:35,065 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-12-02 15:07:35,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 15:07:35,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:07:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1676483241, now seen corresponding path program 1 times [2024-12-02 15:07:35,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:07:35,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676344969] [2024-12-02 15:07:35,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:07:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:07:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:35,391 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:07:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:35,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:07:35,419 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:07:35,419 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-12-02 15:07:35,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-12-02 15:07:35,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-12-02 15:07:35,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-12-02 15:07:35,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:07:35,420 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:07:35,420 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:07:35,420 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 15:07:35,473 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:07:35,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 95 transitions, 208 flow [2024-12-02 15:07:35,502 INFO L124 PetriNetUnfolderBase]: 12/103 cut-off events. [2024-12-02 15:07:35,502 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 15:07:35,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 12/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 273 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2024-12-02 15:07:35,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 95 transitions, 208 flow [2024-12-02 15:07:35,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 95 transitions, 208 flow [2024-12-02 15:07:35,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:07:35,506 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;@5a91d3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:07:35,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 15:07:35,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:07:35,517 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-12-02 15:07:35,517 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 15:07:35,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:07:35,517 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-12-02 15:07:35,517 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 15:07:35,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:07:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -847068650, now seen corresponding path program 1 times [2024-12-02 15:07:35,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:07:35,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909027701] [2024-12-02 15:07:35,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:07:35,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:07:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:35,759 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:07:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:35,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:07:35,782 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:07:35,782 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 15:07:35,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-12-02 15:07:35,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-12-02 15:07:35,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-12-02 15:07:35,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-12-02 15:07:35,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:07:35,783 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:07:35,784 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:07:35,784 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 15:07:35,846 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:07:35,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 125 transitions, 278 flow [2024-12-02 15:07:35,896 INFO L124 PetriNetUnfolderBase]: 16/136 cut-off events. [2024-12-02 15:07:35,896 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-12-02 15:07:35,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 16/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 438 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2024-12-02 15:07:35,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 125 transitions, 278 flow [2024-12-02 15:07:35,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 125 transitions, 278 flow [2024-12-02 15:07:35,901 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:07:35,902 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;@5a91d3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:07:35,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 15:07:35,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:07:35,916 INFO L124 PetriNetUnfolderBase]: 3/56 cut-off events. [2024-12-02 15:07:35,916 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-12-02 15:07:35,916 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:07:35,916 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-12-02 15:07:35,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-12-02 15:07:35,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:07:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1588490494, now seen corresponding path program 1 times [2024-12-02 15:07:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:07:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378630352] [2024-12-02 15:07:35,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:07:35,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:07:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:36,171 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:07:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:36,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:07:36,196 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:07:36,196 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-12-02 15:07:36,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-12-02 15:07:36,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-12-02 15:07:36,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-12-02 15:07:36,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-12-02 15:07:36,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-12-02 15:07:36,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:07:36,197 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:07:36,198 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:07:36,198 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-12-02 15:07:36,277 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:07:36,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 155 transitions, 350 flow [2024-12-02 15:07:36,324 INFO L124 PetriNetUnfolderBase]: 20/169 cut-off events. [2024-12-02 15:07:36,324 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-12-02 15:07:36,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 169 events. 20/169 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 589 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2024-12-02 15:07:36,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 155 transitions, 350 flow [2024-12-02 15:07:36,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 155 transitions, 350 flow [2024-12-02 15:07:36,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:07:36,331 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;@5a91d3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:07:36,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 15:07:36,352 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:07:36,352 INFO L124 PetriNetUnfolderBase]: 7/87 cut-off events. [2024-12-02 15:07:36,352 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-12-02 15:07:36,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:07:36,352 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:07:36,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 15:07:36,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:07:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -423724043, now seen corresponding path program 1 times [2024-12-02 15:07:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:07:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935050478] [2024-12-02 15:07:36,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:07:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:07:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:36,593 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:07:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:07:36,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:07:36,630 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:07:36,630 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 15:07:36,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-12-02 15:07:36,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-12-02 15:07:36,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-12-02 15:07:36,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-12-02 15:07:36,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-12-02 15:07:36,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-12-02 15:07:36,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:07:36,631 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:07:36,632 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:07:36,632 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-12-02 15:07:36,702 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:07:36,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 185 transitions, 424 flow [2024-12-02 15:07:36,741 INFO L124 PetriNetUnfolderBase]: 24/202 cut-off events. [2024-12-02 15:07:36,741 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-12-02 15:07:36,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 202 events. 24/202 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 759 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 194. Up to 7 conditions per place. [2024-12-02 15:07:36,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 185 transitions, 424 flow [2024-12-02 15:07:36,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 185 transitions, 424 flow [2024-12-02 15:07:36,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:07:36,747 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;@5a91d3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:07:36,747 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-12-02 15:07:36,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:07:36,761 INFO L124 PetriNetUnfolderBase]: 7/90 cut-off events. [2024-12-02 15:07:36,761 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-12-02 15:07:36,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:07:36,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:07:36,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-12-02 15:07:36,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:07:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1843707333, now seen corresponding path program 1 times [2024-12-02 15:07:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:07:36,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914641655] [2024-12-02 15:07:36,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:07:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:07:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:07:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:07:37,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:07:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914641655] [2024-12-02 15:07:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914641655] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:07:37,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:07:37,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:07:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46673812] [2024-12-02 15:07:37,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:07:37,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:07:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:07:37,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:07:37,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:07:37,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 185 [2024-12-02 15:07:37,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 185 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-12-02 15:07:37,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:07:37,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 185 [2024-12-02 15:07:37,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand