./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_75-tricky_address2_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_75-tricky_address2_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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:24:15,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:24:16,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:24:16,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:24:16,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:24:16,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:24:16,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:24:16,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:24:16,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:24:16,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:24:16,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:24:16,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:24:16,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:24:16,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:24:16,047 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:24:16,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:24:16,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:24:16,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:24:16,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:24:16,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:24:16,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:24:16,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:24:16,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:24:16,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:24:16,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:24:16,056 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:24:16,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:24:16,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:24:16,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:24:16,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:24:16,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:24:16,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:24:16,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:24:16,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:24:16,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:24:16,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:24:16,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:24:16,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:24:16,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:24:16,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:24:16,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:24:16,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:24:16,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2024-10-24 12:24:16,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:24:16,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:24:16,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:24:16,341 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:24:16,342 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:24:16,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-10-24 12:24:17,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:24:18,210 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:24:18,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-10-24 12:24:18,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6694513c/5fb9bba0e49e433799e1b671888e3642/FLAG7b49b0aa1 [2024-10-24 12:24:18,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6694513c/5fb9bba0e49e433799e1b671888e3642 [2024-10-24 12:24:18,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:24:18,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:24:18,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:24:18,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:24:18,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:24:18,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:24:18" (1/1) ... [2024-10-24 12:24:18,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f07481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:18, skipping insertion in model container [2024-10-24 12:24:18,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:24:18" (1/1) ... [2024-10-24 12:24:18,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:24:18,816 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_75-tricky_address2_racefree.i[41323,41336] [2024-10-24 12:24:18,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:24:18,888 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:24:18,941 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_75-tricky_address2_racefree.i[41323,41336] [2024-10-24 12:24:18,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:24:19,035 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:24:19,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19 WrapperNode [2024-10-24 12:24:19,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:24:19,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:24:19,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:24:19,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:24:19,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,113 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 213 [2024-10-24 12:24:19,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:24:19,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:24:19,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:24:19,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:24:19,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,172 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 12:24:19,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:24:19,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:24:19,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:24:19,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:24:19,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (1/1) ... [2024-10-24 12:24:19,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:24:19,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:19,244 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 12:24:19,248 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 12:24:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:24:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:24:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:24:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:24:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:24:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:24:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:24:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:24:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:24:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:24:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:24:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:24:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:24:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 12:24:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 12:24:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:24:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:24:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:24:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:24:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:24:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:24:19,302 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 12:24:19,467 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:24:19,470 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:24:19,811 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:24:19,811 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:24:20,007 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:24:20,007 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-24 12:24:20,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:24:20 BoogieIcfgContainer [2024-10-24 12:24:20,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:24:20,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:24:20,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:24:20,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:24:20,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:24:18" (1/3) ... [2024-10-24 12:24:20,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625b4576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:24:20, skipping insertion in model container [2024-10-24 12:24:20,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:24:19" (2/3) ... [2024-10-24 12:24:20,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625b4576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:24:20, skipping insertion in model container [2024-10-24 12:24:20,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:24:20" (3/3) ... [2024-10-24 12:24:20,021 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2024-10-24 12:24:20,043 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:24:20,044 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 12:24:20,044 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:24:20,103 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 12:24:20,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 93 transitions, 193 flow [2024-10-24 12:24:20,235 INFO L124 PetriNetUnfolderBase]: 38/137 cut-off events. [2024-10-24 12:24:20,235 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:24:20,241 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 12:24:20,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 93 transitions, 193 flow [2024-10-24 12:24:20,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 91 transitions, 186 flow [2024-10-24 12:24:20,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:24:20,298 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;@7c7ac67c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:24:20,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:24:20,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:24:20,310 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-10-24 12:24:20,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:24:20,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:20,311 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 12:24:20,312 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 12:24:20,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1934464289, now seen corresponding path program 1 times [2024-10-24 12:24:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256643304] [2024-10-24 12:24:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:20,674 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 12:24:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:20,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256643304] [2024-10-24 12:24:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256643304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:24:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:24:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:24:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117725181] [2024-10-24 12:24:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:24:20,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:24:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:24:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:24:20,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-10-24 12:24:20,732 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 12:24:20,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:20,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-10-24 12:24:20,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:21,066 INFO L124 PetriNetUnfolderBase]: 399/1134 cut-off events. [2024-10-24 12:24:21,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:24:21,074 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 12:24:21,085 INFO L140 encePairwiseOnDemand]: 68/93 looper letters, 41 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-24 12:24:21,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 230 flow [2024-10-24 12:24:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:24:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:24:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-10-24 12:24:21,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-10-24 12:24:21,104 INFO L175 Difference]: Start difference. First operand has 69 places, 91 transitions, 186 flow. Second operand 3 states and 147 transitions. [2024-10-24 12:24:21,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 230 flow [2024-10-24 12:24:21,108 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 12:24:21,114 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 154 flow [2024-10-24 12:24:21,117 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 12:24:21,123 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2024-10-24 12:24:21,123 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 154 flow [2024-10-24 12:24:21,123 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 12:24:21,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:21,124 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 12:24:21,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:24:21,125 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 12:24:21,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1509947759, now seen corresponding path program 1 times [2024-10-24 12:24:21,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:21,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285992558] [2024-10-24 12:24:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:21,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:21,307 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 12:24:21,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285992558] [2024-10-24 12:24:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285992558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991374006] [2024-10-24 12:24:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:21,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:21,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:21,315 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 12:24:21,318 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 12:24:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:21,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:24:21,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:21,486 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 12:24:21,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:21,518 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 12:24:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991374006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:21,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-24 12:24:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235761712] [2024-10-24 12:24:21,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:21,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:24:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:21,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:24:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:24:21,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-10-24 12:24:21,528 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 12:24:21,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:21,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-10-24 12:24:21,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:21,884 INFO L124 PetriNetUnfolderBase]: 399/1137 cut-off events. [2024-10-24 12:24:21,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:24:21,887 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 12:24:21,892 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 41 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-10-24 12:24:21,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 258 flow [2024-10-24 12:24:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:24:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:24:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-10-24 12:24:21,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3781362007168459 [2024-10-24 12:24:21,895 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 154 flow. Second operand 6 states and 211 transitions. [2024-10-24 12:24:21,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 258 flow [2024-10-24 12:24:21,896 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 12:24:21,900 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 186 flow [2024-10-24 12:24:21,900 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 12:24:21,901 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2024-10-24 12:24:21,901 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 186 flow [2024-10-24 12:24:21,902 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 12:24:21,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:21,903 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:21,927 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 12:24:22,106 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 12:24:22,107 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 12:24:22,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash -988384991, now seen corresponding path program 2 times [2024-10-24 12:24:22,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:22,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18311646] [2024-10-24 12:24:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:22,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:22,297 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 12:24:22,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18311646] [2024-10-24 12:24:22,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18311646] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282332999] [2024-10-24 12:24:22,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:24:22,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:22,304 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 12:24:22,306 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 12:24:22,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:24:22,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:24:22,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:24:22,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:22,433 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 12:24:22,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:22,512 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 12:24:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282332999] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:22,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-24 12:24:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303856932] [2024-10-24 12:24:22,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:22,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:24:22,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:24:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:24:22,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 93 [2024-10-24 12:24:22,518 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 12:24:22,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:22,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 93 [2024-10-24 12:24:22,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:22,793 INFO L124 PetriNetUnfolderBase]: 399/1143 cut-off events. [2024-10-24 12:24:22,794 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-24 12:24:22,797 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 12:24:22,800 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 41 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-10-24 12:24:22,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 326 flow [2024-10-24 12:24:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:24:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:24:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-10-24 12:24:22,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34229390681003585 [2024-10-24 12:24:22,804 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 186 flow. Second operand 12 states and 382 transitions. [2024-10-24 12:24:22,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 326 flow [2024-10-24 12:24:22,810 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 12:24:22,812 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 256 flow [2024-10-24 12:24:22,813 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 12:24:22,814 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2024-10-24 12:24:22,815 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 256 flow [2024-10-24 12:24:22,815 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 12:24:22,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:22,816 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:22,838 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 12:24:23,016 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 12:24:23,017 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 12:24:23,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2091812063, now seen corresponding path program 3 times [2024-10-24 12:24:23,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900738458] [2024-10-24 12:24:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:23,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:23,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:24:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:23,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:24:23,120 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:24:23,122 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-24 12:24:23,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-10-24 12:24:23,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-10-24 12:24:23,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-10-24 12:24:23,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:24:23,126 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-24 12:24:23,130 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:24:23,130 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 12:24:23,173 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 12:24:23,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 136 transitions, 288 flow [2024-10-24 12:24:23,198 INFO L124 PetriNetUnfolderBase]: 64/231 cut-off events. [2024-10-24 12:24:23,199 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 12:24:23,202 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 12:24:23,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 136 transitions, 288 flow [2024-10-24 12:24:23,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 136 transitions, 288 flow [2024-10-24 12:24:23,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:24:23,208 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;@7c7ac67c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:24:23,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-24 12:24:23,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:24:23,218 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-10-24 12:24:23,218 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:24:23,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:23,218 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:23,219 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 12:24:23,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash 796306266, now seen corresponding path program 1 times [2024-10-24 12:24:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403067330] [2024-10-24 12:24:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:23,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:23,273 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 12:24:23,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403067330] [2024-10-24 12:24:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403067330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:24:23,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:24:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:24:23,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080237560] [2024-10-24 12:24:23,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:24:23,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:24:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:24:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:24:23,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-10-24 12:24:23,279 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 12:24:23,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:23,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-10-24 12:24:23,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:26,605 INFO L124 PetriNetUnfolderBase]: 14783/28870 cut-off events. [2024-10-24 12:24:26,606 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-24 12:24:26,699 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 12:24:26,834 INFO L140 encePairwiseOnDemand]: 100/136 looper letters, 62 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-10-24 12:24:26,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 352 flow [2024-10-24 12:24:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:24:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:24:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2024-10-24 12:24:26,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2024-10-24 12:24:26,839 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 288 flow. Second operand 3 states and 218 transitions. [2024-10-24 12:24:26,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 352 flow [2024-10-24 12:24:26,847 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 12:24:26,850 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 234 flow [2024-10-24 12:24:26,850 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 12:24:26,851 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2024-10-24 12:24:26,852 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 234 flow [2024-10-24 12:24:26,852 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 12:24:26,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:26,853 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 12:24:26,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:24:26,853 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 12:24:26,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -191595918, now seen corresponding path program 1 times [2024-10-24 12:24:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512038509] [2024-10-24 12:24:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:26,905 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 12:24:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512038509] [2024-10-24 12:24:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512038509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857150345] [2024-10-24 12:24:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:26,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:26,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:26,909 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 12:24:26,911 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 12:24:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:27,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:24:27,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:27,019 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 12:24:27,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:27,034 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 12:24:27,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857150345] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:27,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:27,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-24 12:24:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853969176] [2024-10-24 12:24:27,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:27,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:24:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:24:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:24:27,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-10-24 12:24:27,038 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 12:24:27,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:27,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-10-24 12:24:27,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:29,878 INFO L124 PetriNetUnfolderBase]: 14783/28873 cut-off events. [2024-10-24 12:24:29,878 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-24 12:24:29,982 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 12:24:30,113 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 62 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-10-24 12:24:30,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 380 flow [2024-10-24 12:24:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:24:30,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:24:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-10-24 12:24:30,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-10-24 12:24:30,332 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 234 flow. Second operand 6 states and 310 transitions. [2024-10-24 12:24:30,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 380 flow [2024-10-24 12:24:30,338 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 12:24:30,346 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 266 flow [2024-10-24 12:24:30,347 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 12:24:30,348 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-10-24 12:24:30,348 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 266 flow [2024-10-24 12:24:30,348 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 12:24:30,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:30,349 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:30,382 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 12:24:30,557 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 12:24:30,558 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 12:24:30,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1878896986, now seen corresponding path program 2 times [2024-10-24 12:24:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:30,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995659746] [2024-10-24 12:24:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:30,666 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 12:24:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:30,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995659746] [2024-10-24 12:24:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995659746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:24:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956397411] [2024-10-24 12:24:30,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:24:30,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:24:30,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:24:30,670 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 12:24:30,672 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 12:24:30,762 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:24:30,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:24:30,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:24:30,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:24:30,783 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 12:24:30,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:24:30,848 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 12:24:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956397411] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:24:30,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:24:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-24 12:24:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440187954] [2024-10-24 12:24:30,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:24:30,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:24:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:24:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:24:30,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 136 [2024-10-24 12:24:30,854 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 12:24:30,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:30,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 136 [2024-10-24 12:24:30,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:24:33,293 INFO L124 PetriNetUnfolderBase]: 14783/28879 cut-off events. [2024-10-24 12:24:33,293 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-10-24 12:24:33,403 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 12:24:33,507 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 62 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-10-24 12:24:33,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 448 flow [2024-10-24 12:24:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:24:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:24:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 559 transitions. [2024-10-24 12:24:33,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3425245098039216 [2024-10-24 12:24:33,513 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 266 flow. Second operand 12 states and 559 transitions. [2024-10-24 12:24:33,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 448 flow [2024-10-24 12:24:33,520 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 12:24:33,523 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 336 flow [2024-10-24 12:24:33,525 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 12:24:33,526 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 26 predicate places. [2024-10-24 12:24:33,527 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 336 flow [2024-10-24 12:24:33,527 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 12:24:33,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:33,528 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-10-24 12:24:33,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 12:24:33,728 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 12:24:33,730 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 12:24:33,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash -222782886, now seen corresponding path program 3 times [2024-10-24 12:24:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567954353] [2024-10-24 12:24:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:33,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:33,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:24:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:24:33,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:24:33,796 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:24:33,797 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-24 12:24:33,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-24 12:24:33,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-10-24 12:24:33,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-10-24 12:24:33,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-24 12:24:33,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:24:33,798 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-24 12:24:33,799 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:24:33,799 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 12:24:33,846 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:24:33,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 179 transitions, 385 flow [2024-10-24 12:24:33,874 INFO L124 PetriNetUnfolderBase]: 93/336 cut-off events. [2024-10-24 12:24:33,875 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 12:24:33,879 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 12:24:33,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 179 transitions, 385 flow [2024-10-24 12:24:33,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 179 transitions, 385 flow [2024-10-24 12:24:33,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:24:33,884 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;@7c7ac67c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:24:33,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-24 12:24:33,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:24:33,895 INFO L124 PetriNetUnfolderBase]: 13/84 cut-off events. [2024-10-24 12:24:33,895 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 12:24:33,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:24:33,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:24:33,895 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 12:24:33,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:24:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash 687690589, now seen corresponding path program 1 times [2024-10-24 12:24:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:24:33,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534894127] [2024-10-24 12:24:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:24:33,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:24:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:24:33,943 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 12:24:33,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:24:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534894127] [2024-10-24 12:24:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534894127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:24:33,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:24:33,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:24:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611559410] [2024-10-24 12:24:33,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:24:33,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:24:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:24:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:24:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:24:33,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-10-24 12:24:33,946 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 12:24:33,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:24:33,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-10-24 12:24:33,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand