./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f92b704990a995ec2f32d8abc59f9e1c173271b08c590da02eb7a88d6ef9eed6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:32:47,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:32:47,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:32:47,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:32:47,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:32:47,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:32:47,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:32:47,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:32:47,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:32:47,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:32:47,947 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:32:47,947 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:32:47,947 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:32:47,947 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:32:47,947 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:32:47,948 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:32:47,948 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:32:47,948 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:32:47,948 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:32:47,948 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:32:47,948 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:32:47,948 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:32:47,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:32:47,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:32:47,949 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:32:47,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:32:47,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:32:47,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:32:47,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:32:47,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:32:47,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:32:47,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:32:47,952 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:32:47,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:32:47,952 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> f92b704990a995ec2f32d8abc59f9e1c173271b08c590da02eb7a88d6ef9eed6 [2024-11-14 03:32:48,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:32:48,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:32:48,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:32:48,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:32:48,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:32:48,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-ext/25_stack_longer-2.i Unable to find full path for "g++" [2024-11-14 03:32:50,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:32:50,601 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:32:50,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i [2024-11-14 03:32:50,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/data/1db2f9c5b/ea285858a0b84e32bcafbcf501896b74/FLAG4275a1a59 [2024-11-14 03:32:50,644 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/data/1db2f9c5b/ea285858a0b84e32bcafbcf501896b74 [2024-11-14 03:32:50,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:32:50,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:32:50,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:32:50,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:32:50,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:32:50,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:32:50" (1/1) ... [2024-11-14 03:32:50,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f58cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:50, skipping insertion in model container [2024-11-14 03:32:50,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:32:50" (1/1) ... [2024-11-14 03:32:50,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:32:51,083 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_4b22e7d5-e396-4a1b-8444-30f58b696721/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i[31347,31360] [2024-11-14 03:32:51,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:32:51,142 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:32:51,202 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_4b22e7d5-e396-4a1b-8444-30f58b696721/sv-benchmarks/c/pthread-ext/25_stack_longer-2.i[31347,31360] [2024-11-14 03:32:51,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:32:51,260 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:32:51,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51 WrapperNode [2024-11-14 03:32:51,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:32:51,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:32:51,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:32:51,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:32:51,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,338 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 777 [2024-11-14 03:32:51,339 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:32:51,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:32:51,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:32:51,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:32:51,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:32:51,388 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:32:51,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:32:51,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:32:51,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (1/1) ... [2024-11-14 03:32:51,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:32:51,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:32:51,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:32:51,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b22e7d5-e396-4a1b-8444-30f58b696721/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:32:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-14 03:32:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-14 03:32:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-14 03:32:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 03:32:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:32:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:32:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:32:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 03:32:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-14 03:32:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:32:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:32:51,499 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 03:32:51,675 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:32:51,677 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:32:52,915 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 03:32:52,916 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:33:08,634 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:33:08,634 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 03:33:08,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:33:08 BoogieIcfgContainer [2024-11-14 03:33:08,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:33:08,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:33:08,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:33:08,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:33:08,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:32:50" (1/3) ... [2024-11-14 03:33:08,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605aa183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:33:08, skipping insertion in model container [2024-11-14 03:33:08,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:32:51" (2/3) ... [2024-11-14 03:33:08,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605aa183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:33:08, skipping insertion in model container [2024-11-14 03:33:08,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:33:08" (3/3) ... [2024-11-14 03:33:08,653 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-2.i [2024-11-14 03:33:08,676 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:33:08,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 25_stack_longer-2.i that has 2 procedures, 31 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 03:33:08,679 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 03:33:09,053 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 03:33:09,108 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 35 transitions, 74 flow [2024-11-14 03:33:09,152 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 128 states have (on average 1.9296875) internal successors, (247), 130 states have internal predecessors, (247), 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) [2024-11-14 03:33:09,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:33:09,219 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=FINITE_AUTOMATA, 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;@2bc7b291, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:33:09,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-14 03:33:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 128 states have (on average 1.9296875) internal successors, (247), 130 states have internal predecessors, (247), 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) [2024-11-14 03:33:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 03:33:09,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:33:09,231 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-14 03:33:09,232 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:33:09,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:33:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2005528833, now seen corresponding path program 1 times [2024-11-14 03:33:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:33:09,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965213526] [2024-11-14 03:33:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:33:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms