./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/goblint-regression/28-race_reach_20-callback_racefree.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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:23:18,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:23:18,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:23:18,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:23:18,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:23:18,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:23:18,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:23:18,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:23:18,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:23:18,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:23:18,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:23:18,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:23:18,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:23:18,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:23:18,643 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:23:18,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:23:18,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:23:18,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:23:18,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:23:18,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:23:18,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:23:18,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:23:18,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:23:18,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:23:18,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:23:18,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:23:18,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:23:18,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:23:18,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:23:18,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:23:18,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:23:18,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:23:18,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:23:18,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:23:18,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:23:18,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:23:18,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:23:18,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:23:18,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:23:18,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:23:18,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:23:18,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:23:18,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2024-11-10 10:23:18,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:23:18,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:23:18,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:23:18,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:23:18,950 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:23:18,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-10 10:23:20,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:23:20,690 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:23:20,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-11-10 10:23:20,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523a6167a/787c2b780928440e930eb2fe0f468b4f/FLAG7bf281a28 [2024-11-10 10:23:20,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523a6167a/787c2b780928440e930eb2fe0f468b4f [2024-11-10 10:23:20,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:23:20,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:23:20,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:23:20,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:23:20,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:23:20,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:20" (1/1) ... [2024-11-10 10:23:20,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7eddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:20, skipping insertion in model container [2024-11-10 10:23:20,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:20" (1/1) ... [2024-11-10 10:23:20,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:23:21,200 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/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2024-11-10 10:23:21,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:23:21,266 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:23:21,318 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/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2024-11-10 10:23:21,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:23:21,383 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:23:21,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21 WrapperNode [2024-11-10 10:23:21,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:23:21,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:23:21,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:23:21,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:23:21,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,448 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 188 [2024-11-10 10:23:21,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:23:21,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:23:21,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:23:21,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:23:21,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,487 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-10 10:23:21,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,499 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:23:21,516 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:23:21,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:23:21,517 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:23:21,517 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (1/1) ... [2024-11-10 10:23:21,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:23:21,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:23:21,551 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 10:23:21,553 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 10:23:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:23:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:23:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:23:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 10:23:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:23:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 10:23:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 10:23:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:23:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:23:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:23:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:23:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 10:23:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:23:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:23:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:23:21,597 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 10:23:21,726 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:23:21,727 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:23:21,969 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 10:23:21,970 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L720-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 10:23:22,017 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:23:22,017 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:23:22,332 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:23:22,332 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:23:22,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:22 BoogieIcfgContainer [2024-11-10 10:23:22,333 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:23:22,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:23:22,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:23:22,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:23:22,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:20" (1/3) ... [2024-11-10 10:23:22,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b0728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:22, skipping insertion in model container [2024-11-10 10:23:22,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:21" (2/3) ... [2024-11-10 10:23:22,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b0728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:22, skipping insertion in model container [2024-11-10 10:23:22,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:22" (3/3) ... [2024-11-10 10:23:22,345 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2024-11-10 10:23:22,362 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:23:22,363 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:23:22,364 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:23:22,416 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 10:23:22,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 66 transitions, 139 flow [2024-11-10 10:23:22,499 INFO L124 PetriNetUnfolderBase]: 26/108 cut-off events. [2024-11-10 10:23:22,500 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:23:22,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 26/108 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 348 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2024-11-10 10:23:22,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 66 transitions, 139 flow [2024-11-10 10:23:22,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 132 flow [2024-11-10 10:23:22,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:22,527 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;@2077b0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:22,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:23:22,537 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:22,537 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-11-10 10:23:22,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:23:22,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:22,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:23:22,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 10:23:22,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1946722241, now seen corresponding path program 1 times [2024-11-10 10:23:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130382862] [2024-11-10 10:23:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:22,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:23:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:22,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:23:22,839 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:23:22,840 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-10 10:23:22,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-10 10:23:22,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-10 10:23:22,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:23:22,844 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:23:22,847 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:23:22,848 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:23:22,877 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:23:22,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 86 transitions, 188 flow [2024-11-10 10:23:22,925 INFO L124 PetriNetUnfolderBase]: 43/180 cut-off events. [2024-11-10 10:23:22,926 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:23:22,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 180 events. 43/180 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 704 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 112. Up to 9 conditions per place. [2024-11-10 10:23:22,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 86 transitions, 188 flow [2024-11-10 10:23:22,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 86 transitions, 188 flow [2024-11-10 10:23:22,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:22,937 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;@2077b0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:22,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:23:22,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:22,956 INFO L124 PetriNetUnfolderBase]: 13/76 cut-off events. [2024-11-10 10:23:22,956 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:23:22,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:22,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:22,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-10 10:23:22,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash 115697854, now seen corresponding path program 1 times [2024-11-10 10:23:22,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:22,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473608944] [2024-11-10 10:23:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:22,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473608944] [2024-11-10 10:23:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473608944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:23:23,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:23:23,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:23:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880151052] [2024-11-10 10:23:23,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:23,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:23:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:23:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:23:23,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-10 10:23:23,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 10:23:23,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:23,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-10 10:23:23,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:24,641 INFO L124 PetriNetUnfolderBase]: 4963/9754 cut-off events. [2024-11-10 10:23:24,642 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-10 10:23:24,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17642 conditions, 9754 events. 4963/9754 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 75910 event pairs, 1650 based on Foata normal form. 2848/12118 useless extension candidates. Maximal degree in co-relation 12809. Up to 3905 conditions per place. [2024-11-10 10:23:24,718 INFO L140 encePairwiseOnDemand]: 65/86 looper letters, 106 selfloop transitions, 7 changer transitions 9/151 dead transitions. [2024-11-10 10:23:24,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 151 transitions, 579 flow [2024-11-10 10:23:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:23:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:23:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions. [2024-11-10 10:23:24,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7255813953488373 [2024-11-10 10:23:24,738 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 188 flow. Second operand 5 states and 312 transitions. [2024-11-10 10:23:24,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 151 transitions, 579 flow [2024-11-10 10:23:24,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 151 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:23:24,753 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 208 flow [2024-11-10 10:23:24,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-11-10 10:23:24,761 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2024-11-10 10:23:24,761 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 208 flow [2024-11-10 10:23:24,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 10:23:24,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:24,762 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:23:24,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:23:24,762 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-10 10:23:24,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 808920432, now seen corresponding path program 1 times [2024-11-10 10:23:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:24,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339648524] [2024-11-10 10:23:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:24,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:23:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:24,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:23:24,831 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:23:24,832 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 10:23:24,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-10 10:23:24,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-10 10:23:24,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-10 10:23:24,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:23:24,833 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:23:24,834 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:23:24,837 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:23:24,863 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:23:24,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 106 transitions, 239 flow [2024-11-10 10:23:24,895 INFO L124 PetriNetUnfolderBase]: 65/269 cut-off events. [2024-11-10 10:23:24,895 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 10:23:24,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 269 events. 65/269 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1158 event pairs, 1 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2024-11-10 10:23:24,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 106 transitions, 239 flow [2024-11-10 10:23:24,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 106 transitions, 239 flow [2024-11-10 10:23:24,905 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:24,906 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;@2077b0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:24,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:23:24,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:24,916 INFO L124 PetriNetUnfolderBase]: 14/83 cut-off events. [2024-11-10 10:23:24,917 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 10:23:24,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:24,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:24,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:24,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash -978048944, now seen corresponding path program 1 times [2024-11-10 10:23:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:24,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498278201] [2024-11-10 10:23:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:25,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498278201] [2024-11-10 10:23:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498278201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:23:25,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:23:25,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:23:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257943919] [2024-11-10 10:23:25,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:25,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:23:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:23:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:23:25,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 106 [2024-11-10 10:23:25,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 106 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-10 10:23:25,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:25,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 106 [2024-11-10 10:23:25,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:23:35,519 INFO L124 PetriNetUnfolderBase]: 68966/113426 cut-off events. [2024-11-10 10:23:35,519 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2024-11-10 10:23:35,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209973 conditions, 113426 events. 68966/113426 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 2109. Compared 1033928 event pairs, 22608 based on Foata normal form. 34851/143670 useless extension candidates. Maximal degree in co-relation 59935. Up to 47498 conditions per place. [2024-11-10 10:23:36,226 INFO L140 encePairwiseOnDemand]: 82/106 looper letters, 153 selfloop transitions, 7 changer transitions 0/196 dead transitions. [2024-11-10 10:23:36,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 196 transitions, 772 flow [2024-11-10 10:23:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:23:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:23:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2024-11-10 10:23:36,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7490566037735849 [2024-11-10 10:23:36,231 INFO L175 Difference]: Start difference. First operand has 90 places, 106 transitions, 239 flow. Second operand 5 states and 397 transitions. [2024-11-10 10:23:36,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 196 transitions, 772 flow [2024-11-10 10:23:36,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 196 transitions, 772 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:23:36,245 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 253 flow [2024-11-10 10:23:36,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2024-11-10 10:23:36,246 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2024-11-10 10:23:36,247 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 253 flow [2024-11-10 10:23:36,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-10 10:23:36,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:36,248 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:23:36,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:23:36,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:23:36,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1781437894, now seen corresponding path program 1 times [2024-11-10 10:23:36,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:36,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137139606] [2024-11-10 10:23:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:36,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:36,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:23:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:36,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:23:36,316 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:23:36,316 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:23:36,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:23:36,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-10 10:23:36,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:23:36,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:23:36,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:23:36,318 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:23:36,319 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:23:36,319 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:23:36,353 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:23:36,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 126 transitions, 292 flow [2024-11-10 10:23:36,395 INFO L124 PetriNetUnfolderBase]: 99/394 cut-off events. [2024-11-10 10:23:36,396 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 10:23:36,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 394 events. 99/394 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1769 event pairs, 6 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 293. Up to 32 conditions per place. [2024-11-10 10:23:36,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 126 transitions, 292 flow [2024-11-10 10:23:36,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 126 transitions, 292 flow [2024-11-10 10:23:36,406 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:36,408 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;@2077b0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:36,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:23:36,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:36,568 INFO L124 PetriNetUnfolderBase]: 14/83 cut-off events. [2024-11-10 10:23:36,568 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 10:23:36,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:36,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:36,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-10 10:23:36,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1469256222, now seen corresponding path program 1 times [2024-11-10 10:23:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136612209] [2024-11-10 10:23:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:23:36,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:36,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136612209] [2024-11-10 10:23:36,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136612209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:23:36,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:23:36,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:23:36,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89713229] [2024-11-10 10:23:36,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:36,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:23:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:23:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:23:36,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 126 [2024-11-10 10:23:36,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 126 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-10 10:23:36,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:36,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 126 [2024-11-10 10:23:36,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand