./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/08_rand_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:24:31,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:24:31,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:24:31,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:24:31,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:24:31,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:24:31,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:24:31,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:24:31,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:24:31,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:24:31,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:24:31,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:24:31,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:24:31,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:24:31,918 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:24:31,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:24:31,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:24:31,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:24:31,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:24:31,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:24:31,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:24:31,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:24:31,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:24:31,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:24:31,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:24:31,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:24:31,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:24:31,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:24:31,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:24:31,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:24:31,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:24:31,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:24:31,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:24:31,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:24:31,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:24:31,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:24:31,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:24:31,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:24:31,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:24:31,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:24:31,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:24:31,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:24:31,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2024-11-09 02:24:32,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:24:32,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:24:32,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:24:32,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:24:32,238 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:24:32,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-09 02:24:33,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:24:33,842 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:24:33,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-09 02:24:33,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f88c1d7d/62f9fe5ca59148d287b229ec5f530899/FLAG9162fd7ba [2024-11-09 02:24:33,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f88c1d7d/62f9fe5ca59148d287b229ec5f530899 [2024-11-09 02:24:33,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:24:33,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:24:33,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:24:33,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:24:33,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:24:33,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:24:33" (1/1) ... [2024-11-09 02:24:33,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11352aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:33, skipping insertion in model container [2024-11-09 02:24:33,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:24:33" (1/1) ... [2024-11-09 02:24:33,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:24:34,298 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30837,30850] [2024-11-09 02:24:34,306 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31185,31198] [2024-11-09 02:24:34,310 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31448,31461] [2024-11-09 02:24:34,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:24:34,325 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:24:34,369 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30837,30850] [2024-11-09 02:24:34,374 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31185,31198] [2024-11-09 02:24:34,379 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31448,31461] [2024-11-09 02:24:34,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:24:34,420 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:24:34,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34 WrapperNode [2024-11-09 02:24:34,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:24:34,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:24:34,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:24:34,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:24:34,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,472 INFO L138 Inliner]: procedures = 178, calls = 35, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 145 [2024-11-09 02:24:34,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:24:34,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:24:34,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:24:34,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:24:34,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,516 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [6, 2, 3]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2, 0]. The 4 writes are split as follows [2, 0, 2]. [2024-11-09 02:24:34,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:24:34,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:24:34,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:24:34,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:24:34,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (1/1) ... [2024-11-09 02:24:34,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:24:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:24:34,578 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) [2024-11-09 02:24:34,580 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 [2024-11-09 02:24:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:24:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:24:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:24:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 02:24:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 02:24:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:24:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:24:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:24:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:24:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:24:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:24:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:24:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:24:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:24:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:24:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:24:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:24:34,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:24:34,632 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:24:34,800 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:24:34,802 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:24:35,000 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:24:35,000 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:24:35,138 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:24:35,139 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:24:35,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:35 BoogieIcfgContainer [2024-11-09 02:24:35,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:24:35,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:24:35,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:24:35,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:24:35,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:24:33" (1/3) ... [2024-11-09 02:24:35,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef33361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:24:35, skipping insertion in model container [2024-11-09 02:24:35,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:34" (2/3) ... [2024-11-09 02:24:35,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef33361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:24:35, skipping insertion in model container [2024-11-09 02:24:35,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:35" (3/3) ... [2024-11-09 02:24:35,150 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2024-11-09 02:24:35,167 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:24:35,167 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 02:24:35,168 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:24:35,221 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:35,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 49 transitions, 102 flow [2024-11-09 02:24:35,298 INFO L124 PetriNetUnfolderBase]: 10/51 cut-off events. [2024-11-09 02:24:35,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:24:35,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 10/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2024-11-09 02:24:35,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 49 transitions, 102 flow [2024-11-09 02:24:35,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 49 transitions, 102 flow [2024-11-09 02:24:35,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:35,323 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;@a148d5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:35,323 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:24:35,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:35,327 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-09 02:24:35,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:24:35,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:35,328 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 02:24:35,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:24:35,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash 72389479, now seen corresponding path program 1 times [2024-11-09 02:24:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593082250] [2024-11-09 02:24:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:35,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:24:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:35,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:24:35,501 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:24:35,502 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-09 02:24:35,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-11-09 02:24:35,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-11-09 02:24:35,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-11-09 02:24:35,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-11-09 02:24:35,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-09 02:24:35,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-09 02:24:35,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:24:35,508 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:24:35,511 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:24:35,515 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:24:35,571 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:35,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 93 transitions, 196 flow [2024-11-09 02:24:35,614 INFO L124 PetriNetUnfolderBase]: 20/98 cut-off events. [2024-11-09 02:24:35,615 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:24:35,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 98 events. 20/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 89. Up to 3 conditions per place. [2024-11-09 02:24:35,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 93 transitions, 196 flow [2024-11-09 02:24:35,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 93 transitions, 196 flow [2024-11-09 02:24:35,623 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:35,625 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;@a148d5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:35,625 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-09 02:24:35,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:35,633 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-09 02:24:35,633 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:24:35,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:35,633 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 02:24:35,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 02:24:35,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1958849173, now seen corresponding path program 1 times [2024-11-09 02:24:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117730431] [2024-11-09 02:24:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:35,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:24:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:35,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:24:35,708 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:24:35,709 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-09 02:24:35,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2024-11-09 02:24:35,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2024-11-09 02:24:35,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2024-11-09 02:24:35,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2024-11-09 02:24:35,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2024-11-09 02:24:35,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2024-11-09 02:24:35,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2024-11-09 02:24:35,710 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2024-11-09 02:24:35,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2024-11-09 02:24:35,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:24:35,711 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:24:35,712 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:24:35,712 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:24:35,796 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:35,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 137 transitions, 292 flow [2024-11-09 02:24:35,842 INFO L124 PetriNetUnfolderBase]: 30/145 cut-off events. [2024-11-09 02:24:35,842 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:24:35,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 145 events. 30/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 505 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 132. Up to 4 conditions per place. [2024-11-09 02:24:35,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 137 transitions, 292 flow [2024-11-09 02:24:35,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 137 transitions, 292 flow [2024-11-09 02:24:35,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:35,852 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;@a148d5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:35,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-09 02:24:35,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:35,863 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-11-09 02:24:35,863 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:24:35,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:35,864 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-09 02:24:35,864 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-09 02:24:35,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1191995642, now seen corresponding path program 1 times [2024-11-09 02:24:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:35,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063210741] [2024-11-09 02:24:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:35,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:35,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:24:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:35,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:24:35,932 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:24:35,932 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-09 02:24:35,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2024-11-09 02:24:35,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2024-11-09 02:24:35,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-11-09 02:24:35,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2024-11-09 02:24:35,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2024-11-09 02:24:35,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2024-11-09 02:24:35,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2024-11-09 02:24:35,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2024-11-09 02:24:35,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2024-11-09 02:24:35,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2024-11-09 02:24:35,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2024-11-09 02:24:35,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2024-11-09 02:24:35,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:24:35,936 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:24:35,936 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:24:35,937 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 02:24:36,003 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:36,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 181 transitions, 390 flow [2024-11-09 02:24:36,052 INFO L124 PetriNetUnfolderBase]: 40/192 cut-off events. [2024-11-09 02:24:36,052 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 02:24:36,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 192 events. 40/192 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 750 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 175. Up to 5 conditions per place. [2024-11-09 02:24:36,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 181 transitions, 390 flow [2024-11-09 02:24:36,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 181 transitions, 390 flow [2024-11-09 02:24:36,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:36,065 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;@a148d5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:36,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-09 02:24:36,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:36,075 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-11-09 02:24:36,076 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 02:24:36,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:36,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:36,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-09 02:24:36,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 219609143, now seen corresponding path program 1 times [2024-11-09 02:24:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444823226] [2024-11-09 02:24:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:24:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444823226] [2024-11-09 02:24:36,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444823226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:36,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:36,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:24:36,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223718706] [2024-11-09 02:24:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:36,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:24:36,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:24:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:24:36,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 181 [2024-11-09 02:24:36,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 181 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2024-11-09 02:24:36,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:36,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 181 [2024-11-09 02:24:36,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand