./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:24:14,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:24:14,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:24:14,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:24:14,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:24:14,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:24:14,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:24:14,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:24:14,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:24:14,246 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:24:14,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:24:14,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:24:14,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:24:14,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:24:14,248 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:24:14,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:24:14,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:24:14,249 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:24:14,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:24:14,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:24:14,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:24:14,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:24:14,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:24:14,259 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:24:14,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:24:14,260 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:24:14,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:24:14,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:24:14,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:24:14,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:24:14,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:24:14,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:24:14,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:24:14,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:24:14,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:24:14,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:24:14,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:24:14,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:24:14,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:24:14,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:24:14,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:24:14,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:24:14,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2024-10-24 12:24:14,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:24:14,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:24:14,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:24:14,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:24:14,609 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:24:14,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-10-24 12:24:16,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:24:16,447 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:24:16,448 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-10-24 12:24:16,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e29742609/961adf725b8946028c10df2cb493d149/FLAG4659c7427 [2024-10-24 12:24:16,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e29742609/961adf725b8946028c10df2cb493d149 [2024-10-24 12:24:16,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:24:16,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:24:16,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:24:16,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:24:16,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:24:16,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:24:16" (1/1) ... [2024-10-24 12:24:16,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2120ec96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:16, skipping insertion in model container [2024-10-24 12:24:16,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:24:16" (1/1) ... [2024-10-24 12:24:16,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:24:17,060 WARN L248 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_74-tricky_address1_racefree.i[41323,41336] [2024-10-24 12:24:17,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:24:17,134 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:24:17,247 WARN L248 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_74-tricky_address1_racefree.i[41323,41336] [2024-10-24 12:24:17,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:24:17,373 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:24:17,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17 WrapperNode [2024-10-24 12:24:17,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:24:17,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:24:17,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:24:17,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:24:17,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,460 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 213 [2024-10-24 12:24:17,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:24:17,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:24:17,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:24:17,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:24:17,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,505 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 5, 2, 11]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 6 writes are split as follows [0, 0, 1, 5]. [2024-10-24 12:24:17,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:24:17,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:24:17,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:24:17,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:24:17,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (1/1) ... [2024-10-24 12:24:17,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:24:17,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:17,590 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) [2024-10-24 12:24:17,593 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 [2024-10-24 12:24:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:24:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:24:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:24:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:24:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:24:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:24:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 12:24:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 12:24:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:24:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:24:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:24:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:24:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:24:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:24:17,635 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:24:17,793 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:24:17,795 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:24:18,141 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:24:18,141 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:24:18,335 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:24:18,335 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-24 12:24:18,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:24:18 BoogieIcfgContainer [2024-10-24 12:24:18,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:24:18,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:24:18,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:24:18,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:24:18,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:24:16" (1/3) ... [2024-10-24 12:24:18,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b6b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:24:18, skipping insertion in model container [2024-10-24 12:24:18,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:17" (2/3) ... [2024-10-24 12:24:18,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b6b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:24:18, skipping insertion in model container [2024-10-24 12:24:18,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:24:18" (3/3) ... [2024-10-24 12:24:18,346 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2024-10-24 12:24:18,363 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:24:18,364 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 12:24:18,364 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:24:18,412 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 12:24:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 93 transitions, 193 flow [2024-10-24 12:24:18,526 INFO L124 PetriNetUnfolderBase]: 38/137 cut-off events. [2024-10-24 12:24:18,527 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:24:18,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 137 events. 38/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 544 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 86. Up to 8 conditions per place. [2024-10-24 12:24:18,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 93 transitions, 193 flow [2024-10-24 12:24:18,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 91 transitions, 186 flow [2024-10-24 12:24:18,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:24:18,565 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;@14ddcc7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:24:18,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:24:18,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:24:18,583 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-10-24 12:24:18,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:24:18,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:18,584 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 12:24:18,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 12:24:18,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1934464289, now seen corresponding path program 1 times [2024-10-24 12:24:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704752504] [2024-10-24 12:24:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:18,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:18,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704752504] [2024-10-24 12:24:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704752504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:24:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:24:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:24:18,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454219089] [2024-10-24 12:24:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:24:18,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:24:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:24:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:24:18,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-10-24 12:24:18,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 91 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-10-24 12:24:18,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:18,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-10-24 12:24:18,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:19,311 INFO L124 PetriNetUnfolderBase]: 399/1134 cut-off events. [2024-10-24 12:24:19,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:24:19,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 1134 events. 399/1134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7244 event pairs, 357 based on Foata normal form. 278/1290 useless extension candidates. Maximal degree in co-relation 1859. Up to 789 conditions per place. [2024-10-24 12:24:19,326 INFO L140 encePairwiseOnDemand]: 68/93 looper letters, 41 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-24 12:24:19,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 230 flow [2024-10-24 12:24:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:24:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:24:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-10-24 12:24:19,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-10-24 12:24:19,348 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 186 flow. Second operand 3 states and 147 transitions. [2024-10-24 12:24:19,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 230 flow [2024-10-24 12:24:19,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:24:19,362 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 154 flow [2024-10-24 12:24:19,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-10-24 12:24:19,371 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2024-10-24 12:24:19,372 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 154 flow [2024-10-24 12:24:19,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-10-24 12:24:19,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:19,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 12:24:19,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:24:19,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 12:24:19,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:19,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1509947759, now seen corresponding path program 1 times [2024-10-24 12:24:19,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:19,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896284050] [2024-10-24 12:24:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:19,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896284050] [2024-10-24 12:24:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896284050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324868658] [2024-10-24 12:24:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:19,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:24:19,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:24:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:19,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:24:19,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:19,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:19,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324868658] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:19,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:19,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-24 12:24:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514141177] [2024-10-24 12:24:19,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:19,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:24:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:24:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:24:19,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-10-24 12:24:19,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2024-10-24 12:24:19,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:19,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-10-24 12:24:19,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:20,048 INFO L124 PetriNetUnfolderBase]: 399/1137 cut-off events. [2024-10-24 12:24:20,050 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:24:20,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 1137 events. 399/1137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7236 event pairs, 357 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 1932. Up to 789 conditions per place. [2024-10-24 12:24:20,058 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 41 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-10-24 12:24:20,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 258 flow [2024-10-24 12:24:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:24:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:24:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-10-24 12:24:20,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3781362007168459 [2024-10-24 12:24:20,062 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 154 flow. Second operand 6 states and 211 transitions. [2024-10-24 12:24:20,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 258 flow [2024-10-24 12:24:20,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 254 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:24:20,067 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 186 flow [2024-10-24 12:24:20,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-10-24 12:24:20,069 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2024-10-24 12:24:20,069 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 186 flow [2024-10-24 12:24:20,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2024-10-24 12:24:20,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:20,073 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:20,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:24:20,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:20,275 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 12:24:20,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash -988384991, now seen corresponding path program 2 times [2024-10-24 12:24:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102200323] [2024-10-24 12:24:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:20,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:20,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102200323] [2024-10-24 12:24:20,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102200323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:20,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127414671] [2024-10-24 12:24:20,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:24:20,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:20,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:20,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:24:20,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:24:20,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:24:20,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:24:20,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:24:20,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:20,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:24:20,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127414671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:20,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:20,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-24 12:24:20,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520451936] [2024-10-24 12:24:20,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:20,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:24:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:24:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:24:20,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-10-24 12:24:20,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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) [2024-10-24 12:24:20,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:20,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-10-24 12:24:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:20,985 INFO L124 PetriNetUnfolderBase]: 399/1143 cut-off events. [2024-10-24 12:24:20,986 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-24 12:24:20,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 1143 events. 399/1143 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7221 event pairs, 357 based on Foata normal form. 6/1028 useless extension candidates. Maximal degree in co-relation 1923. Up to 789 conditions per place. [2024-10-24 12:24:20,993 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 41 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-10-24 12:24:20,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 326 flow [2024-10-24 12:24:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:24:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:24:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-10-24 12:24:20,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34229390681003585 [2024-10-24 12:24:20,996 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 186 flow. Second operand 12 states and 382 transitions. [2024-10-24 12:24:20,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 326 flow [2024-10-24 12:24:20,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 312 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 12:24:21,001 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 256 flow [2024-10-24 12:24:21,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=256, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-10-24 12:24:21,003 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2024-10-24 12:24:21,004 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 256 flow [2024-10-24 12:24:21,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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) [2024-10-24 12:24:21,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:21,005 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:21,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:24:21,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 12:24:21,210 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 12:24:21,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2091812063, now seen corresponding path program 3 times [2024-10-24 12:24:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356115844] [2024-10-24 12:24:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:21,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:21,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:24:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:21,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:24:21,318 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:24:21,320 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-24 12:24:21,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-10-24 12:24:21,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-10-24 12:24:21,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-10-24 12:24:21,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:24:21,322 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-24 12:24:21,326 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:24:21,327 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 12:24:21,369 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 12:24:21,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 136 transitions, 288 flow [2024-10-24 12:24:21,395 INFO L124 PetriNetUnfolderBase]: 64/231 cut-off events. [2024-10-24 12:24:21,396 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 12:24:21,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 231 events. 64/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1084 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 139. Up to 12 conditions per place. [2024-10-24 12:24:21,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 136 transitions, 288 flow [2024-10-24 12:24:21,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 136 transitions, 288 flow [2024-10-24 12:24:21,403 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:24:21,407 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;@14ddcc7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:24:21,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-24 12:24:21,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:24:21,416 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-10-24 12:24:21,416 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:24:21,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:21,417 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:21,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-24 12:24:21,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash 796306266, now seen corresponding path program 1 times [2024-10-24 12:24:21,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:21,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636533912] [2024-10-24 12:24:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:21,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:21,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636533912] [2024-10-24 12:24:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636533912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:24:21,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:24:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:24:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055699568] [2024-10-24 12:24:21,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:24:21,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:24:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:24:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:24:21,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-10-24 12:24:21,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-10-24 12:24:21,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:21,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-10-24 12:24:21,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:24,472 INFO L124 PetriNetUnfolderBase]: 14783/28870 cut-off events. [2024-10-24 12:24:24,474 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-24 12:24:24,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50828 conditions, 28870 events. 14783/28870 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 265947 event pairs, 13600 based on Foata normal form. 7914/33823 useless extension candidates. Maximal degree in co-relation 40721. Up to 21860 conditions per place. [2024-10-24 12:24:24,701 INFO L140 encePairwiseOnDemand]: 100/136 looper letters, 62 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-10-24 12:24:24,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 352 flow [2024-10-24 12:24:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:24:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:24:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2024-10-24 12:24:24,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2024-10-24 12:24:24,704 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 288 flow. Second operand 3 states and 218 transitions. [2024-10-24 12:24:24,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 352 flow [2024-10-24 12:24:24,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 104 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:24:24,714 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 234 flow [2024-10-24 12:24:24,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-10-24 12:24:24,719 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2024-10-24 12:24:24,719 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 234 flow [2024-10-24 12:24:24,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-10-24 12:24:24,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:24,719 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 12:24:24,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:24:24,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-24 12:24:24,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash -191595918, now seen corresponding path program 1 times [2024-10-24 12:24:24,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365576372] [2024-10-24 12:24:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365576372] [2024-10-24 12:24:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365576372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506519074] [2024-10-24 12:24:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:24,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:24:24,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:24:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:24,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:24:24,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:24,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506519074] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:24,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:24,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-24 12:24:24,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955254577] [2024-10-24 12:24:24,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:24,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:24:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:24:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:24:24,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-10-24 12:24:24,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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) [2024-10-24 12:24:24,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:24,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-10-24 12:24:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:27,300 INFO L124 PetriNetUnfolderBase]: 14783/28873 cut-off events. [2024-10-24 12:24:27,300 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-24 12:24:27,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50844 conditions, 28873 events. 14783/28873 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 265990 event pairs, 13600 based on Foata normal form. 0/25912 useless extension candidates. Maximal degree in co-relation 50831. Up to 21860 conditions per place. [2024-10-24 12:24:27,476 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 62 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-10-24 12:24:27,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 380 flow [2024-10-24 12:24:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:24:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:24:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-10-24 12:24:27,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-10-24 12:24:27,479 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 234 flow. Second operand 6 states and 310 transitions. [2024-10-24 12:24:27,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 380 flow [2024-10-24 12:24:27,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 376 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:24:27,484 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 266 flow [2024-10-24 12:24:27,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-10-24 12:24:27,485 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-10-24 12:24:27,485 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 266 flow [2024-10-24 12:24:27,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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) [2024-10-24 12:24:27,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:27,486 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:27,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:24:27,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:27,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-24 12:24:27,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1878896986, now seen corresponding path program 2 times [2024-10-24 12:24:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:27,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212266921] [2024-10-24 12:24:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:27,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212266921] [2024-10-24 12:24:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212266921] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045496096] [2024-10-24 12:24:27,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:24:27,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:27,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:27,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:24:27,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:24:27,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:24:27,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:24:27,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:24:27,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:27,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:24:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045496096] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:28,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:28,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-24 12:24:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986548241] [2024-10-24 12:24:28,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:28,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:24:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:24:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:24:28,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-10-24 12:24:28,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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) [2024-10-24 12:24:28,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:28,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-10-24 12:24:28,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:30,434 INFO L124 PetriNetUnfolderBase]: 14783/28879 cut-off events. [2024-10-24 12:24:30,434 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-10-24 12:24:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50881 conditions, 28879 events. 14783/28879 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 266016 event pairs, 13600 based on Foata normal form. 6/25925 useless extension candidates. Maximal degree in co-relation 50822. Up to 21860 conditions per place. [2024-10-24 12:24:30,614 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 62 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-10-24 12:24:30,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 448 flow [2024-10-24 12:24:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:24:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:24:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 559 transitions. [2024-10-24 12:24:30,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3425245098039216 [2024-10-24 12:24:30,619 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 266 flow. Second operand 12 states and 559 transitions. [2024-10-24 12:24:30,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 448 flow [2024-10-24 12:24:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 434 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 12:24:30,630 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 336 flow [2024-10-24 12:24:30,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-10-24 12:24:30,631 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 26 predicate places. [2024-10-24 12:24:30,632 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 336 flow [2024-10-24 12:24:30,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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) [2024-10-24 12:24:30,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:30,634 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:30,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:24:30,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:30,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-24 12:24:30,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash -222782886, now seen corresponding path program 3 times [2024-10-24 12:24:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683768014] [2024-10-24 12:24:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:30,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:30,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:24:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:30,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:24:30,917 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:24:30,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-24 12:24:30,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-24 12:24:30,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-10-24 12:24:30,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-10-24 12:24:30,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-24 12:24:30,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:24:30,919 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-24 12:24:30,920 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:24:30,920 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 12:24:30,962 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:24:30,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 179 transitions, 385 flow [2024-10-24 12:24:31,004 INFO L124 PetriNetUnfolderBase]: 93/336 cut-off events. [2024-10-24 12:24:31,005 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 12:24:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 336 events. 93/336 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1697 event pairs, 1 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 240. Up to 16 conditions per place. [2024-10-24 12:24:31,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 179 transitions, 385 flow [2024-10-24 12:24:31,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 179 transitions, 385 flow [2024-10-24 12:24:31,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:24:31,014 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;@14ddcc7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:24:31,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-24 12:24:31,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:24:31,023 INFO L124 PetriNetUnfolderBase]: 13/84 cut-off events. [2024-10-24 12:24:31,023 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 12:24:31,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:31,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:24:31,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-10-24 12:24:31,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 687690589, now seen corresponding path program 1 times [2024-10-24 12:24:31,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:31,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936244338] [2024-10-24 12:24:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:31,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:24:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:31,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936244338] [2024-10-24 12:24:31,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936244338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:24:31,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:24:31,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:24:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304053896] [2024-10-24 12:24:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:24:31,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:24:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:24:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:24:31,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-10-24 12:24:31,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 179 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-10-24 12:24:31,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:31,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-10-24 12:24:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand