./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:05:54,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:05:54,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:05:54,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:05:54,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:05:54,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:05:54,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:05:54,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:05:54,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:05:54,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:05:54,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:05:54,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:05:54,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:05:54,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:05:54,833 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:05:54,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:05:54,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:05:54,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:05:54,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:05:54,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:05:54,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:05:54,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:05:54,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:05:54,836 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:05:54,836 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:05:54,836 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:05:54,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:05:54,836 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:05:54,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:05:54,837 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:05:54,837 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:05:54,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:05:54,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:05:54,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:05:54,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:05:54,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:05:54,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:05:54,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:05:54,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:05:54,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:05:54,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:05:54,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:05:54,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:05:54,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:05:54,842 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6a420ba5144c69cefe02db203552770c4018653c510d9792e57ffedc3dfc64e [2024-11-10 22:05:55,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:05:55,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:05:55,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:05:55,036 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:05:55,036 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:05:55,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-10 22:05:56,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:05:56,456 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:05:56,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longer-2.i [2024-11-10 22:05:56,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ccb2b79/f6d8623fcf9c4927ab0460925d7f3e1b/FLAG370ccd9ec [2024-11-10 22:05:56,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ccb2b79/f6d8623fcf9c4927ab0460925d7f3e1b [2024-11-10 22:05:56,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:05:56,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:05:56,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:05:56,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:05:56,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:05:56,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:05:56" (1/1) ... [2024-11-10 22:05:56,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a655ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:56, skipping insertion in model container [2024-11-10 22:05:56,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:05:56" (1/1) ... [2024-11-10 22:05:56,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:05:57,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:05:57,179 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:05:57,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:05:57,292 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:05:57,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57 WrapperNode [2024-11-10 22:05:57,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:05:57,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:05:57,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:05:57,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:05:57,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,347 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 837 [2024-11-10 22:05:57,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:05:57,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:05:57,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:05:57,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:05:57,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,382 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [6, 4, 2, 12]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [1, 1, 2, 2]. The 9 writes are split as follows [2, 2, 0, 5]. [2024-11-10 22:05:57,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,393 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:05:57,405 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:05:57,405 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:05:57,405 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:05:57,405 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (1/1) ... [2024-11-10 22:05:57,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:05:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:05:57,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:05:57,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:05:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:05:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:05:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:05:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:05:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 22:05:57,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 22:05:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:05:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:05:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:05:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:05:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:05:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:05:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:05:57,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:05:57,493 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:05:57,614 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:05:57,616 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:05:58,270 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:05:58,271 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:06:15,003 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:06:15,003 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:06:15,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:06:15 BoogieIcfgContainer [2024-11-10 22:06:15,004 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:06:15,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:06:15,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:06:15,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:06:15,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:05:56" (1/3) ... [2024-11-10 22:06:15,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a96c5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:06:15, skipping insertion in model container [2024-11-10 22:06:15,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:05:57" (2/3) ... [2024-11-10 22:06:15,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a96c5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:06:15, skipping insertion in model container [2024-11-10 22:06:15,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:06:15" (3/3) ... [2024-11-10 22:06:15,015 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2024-11-10 22:06:15,029 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:06:15,029 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:06:15,029 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:06:15,148 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:06:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 63 transitions, 130 flow [2024-11-10 22:06:15,353 INFO L124 PetriNetUnfolderBase]: 10/68 cut-off events. [2024-11-10 22:06:15,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:06:15,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 10/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-11-10 22:06:15,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 63 transitions, 130 flow [2024-11-10 22:06:15,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 63 transitions, 130 flow [2024-11-10 22:06:15,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:06:15,373 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;@3af30a6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:06:15,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 22:06:15,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:06:15,404 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-10 22:06:15,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:06:15,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:06:15,405 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:06:15,405 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:06:15,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:06:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1679642765, now seen corresponding path program 1 times [2024-11-10 22:06:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:06:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375014017] [2024-11-10 22:06:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:06:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms