./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:37:16,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:37:16,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:37:16,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:37:16,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:37:16,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:37:16,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:37:16,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:37:16,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:37:16,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:37:16,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:37:16,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:37:16,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:37:16,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:37:16,945 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:37:16,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:37:16,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:37:16,946 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:37:16,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:37:16,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:37:16,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:37:16,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:37:16,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:37:16,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:37:16,951 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:37:16,951 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:37:16,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:37:16,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:37:16,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:37:16,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:37:16,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:37:16,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:37:16,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:37:16,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:37:16,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:37:16,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:37:16,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:37:16,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:37:16,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:37:16,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:37:16,955 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:37:16,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:37:16,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:37:16,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:37:17,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:37:17,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:37:17,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:37:17,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:37:17,221 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:37:17,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-02-20 11:37:18,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:37:18,497 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:37:18,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-02-20 11:37:18,511 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/470a603e7/d196157e1b7648cda4316fcf2b5340ed/FLAG9b8cd6d10 [2024-02-20 11:37:18,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/470a603e7/d196157e1b7648cda4316fcf2b5340ed [2024-02-20 11:37:18,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:37:18,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:37:18,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:37:18,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:37:18,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:37:18,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:18,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7234e739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18, skipping insertion in model container [2024-02-20 11:37:18,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:18,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:37:18,881 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2024-02-20 11:37:18,905 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:37:18,926 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:37:18,955 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2024-02-20 11:37:18,964 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:37:18,994 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:37:18,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18 WrapperNode [2024-02-20 11:37:18,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:37:18,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:37:18,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:37:18,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:37:19,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,032 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2024-02-20 11:37:19,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:37:19,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:37:19,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:37:19,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:37:19,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,054 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-02-20 11:37:19,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:37:19,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:37:19,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:37:19,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:37:19,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (1/1) ... [2024-02-20 11:37:19,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:37:19,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:37:19,110 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) [2024-02-20 11:37:19,136 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 [2024-02-20 11:37:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:37:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:37:19,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:37:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:37:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 11:37:19,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:37:19,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:37:19,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-20 11:37:19,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-20 11:37:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:37:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-02-20 11:37:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:37:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:37:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:37:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:37:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 11:37:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-20 11:37:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:37:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:37:19,168 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:37:19,276 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:37:19,277 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:37:19,530 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:37:19,531 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:37:19,714 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:37:19,715 INFO L320 CfgBuilder]: Removed 23 assume(true) statements. [2024-02-20 11:37:19,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:37:19 BoogieIcfgContainer [2024-02-20 11:37:19,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:37:19,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:37:19,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:37:19,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:37:19,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:37:18" (1/3) ... [2024-02-20 11:37:19,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ace181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:37:19, skipping insertion in model container [2024-02-20 11:37:19,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:37:18" (2/3) ... [2024-02-20 11:37:19,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ace181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:37:19, skipping insertion in model container [2024-02-20 11:37:19,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:37:19" (3/3) ... [2024-02-20 11:37:19,724 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-02-20 11:37:19,738 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:37:19,739 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-02-20 11:37:19,739 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:37:19,773 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-20 11:37:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 117 transitions, 241 flow [2024-02-20 11:37:19,871 INFO L124 PetriNetUnfolderBase]: 41/183 cut-off events. [2024-02-20 11:37:19,871 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-20 11:37:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 183 events. 41/183 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 838 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2024-02-20 11:37:19,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 117 transitions, 241 flow [2024-02-20 11:37:19,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 115 transitions, 234 flow [2024-02-20 11:37:19,895 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:37:19,903 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@48b5f396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:37:19,903 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-20 11:37:19,908 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:37:19,908 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-02-20 11:37:19,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-20 11:37:19,908 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:37:19,909 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-20 11:37:19,910 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-02-20 11:37:19,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:37:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 406209066, now seen corresponding path program 1 times [2024-02-20 11:37:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:37:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454206899] [2024-02-20 11:37:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:37:19,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:37:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:37:20,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:37:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:37:20,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:37:20,106 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:37:20,107 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-02-20 11:37:20,108 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-02-20 11:37:20,108 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-02-20 11:37:20,108 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-02-20 11:37:20,109 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-02-20 11:37:20,109 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:37:20,109 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:37:20,111 WARN L345 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:37:20,111 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-20 11:37:20,142 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 11:37:20,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 164 transitions, 344 flow [2024-02-20 11:37:20,191 INFO L124 PetriNetUnfolderBase]: 69/303 cut-off events. [2024-02-20 11:37:20,192 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-20 11:37:20,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 303 events. 69/303 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1602 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2024-02-20 11:37:20,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 164 transitions, 344 flow [2024-02-20 11:37:20,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 164 transitions, 344 flow [2024-02-20 11:37:20,201 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:37:20,204 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@48b5f396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:37:20,204 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-20 11:37:20,212 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:37:20,212 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-02-20 11:37:20,212 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:37:20,212 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:37:20,212 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:37:20,213 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-02-20 11:37:20,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:37:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 228443897, now seen corresponding path program 1 times [2024-02-20 11:37:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:37:20,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988872398] [2024-02-20 11:37:20,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:37:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:37:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:37:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:37:20,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:37:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988872398] [2024-02-20 11:37:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988872398] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:37:20,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:37:20,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 11:37:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180628399] [2024-02-20 11:37:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:37:20,333 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:37:20,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:37:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:37:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:37:20,399 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 164 [2024-02-20 11:37:20,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 164 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-02-20 11:37:20,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:37:20,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 164 [2024-02-20 11:37:20,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:37:23,847 INFO L124 PetriNetUnfolderBase]: 19622/38837 cut-off events. [2024-02-20 11:37:23,848 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-02-20 11:37:23,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69225 conditions, 38837 events. 19622/38837 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 356868 event pairs, 18656 based on Foata normal form. 11718/48325 useless extension candidates. Maximal degree in co-relation 58856. Up to 30271 conditions per place. [2024-02-20 11:37:24,054 INFO L140 encePairwiseOnDemand]: 124/164 looper letters, 78 selfloop transitions, 2 changer transitions 11/146 dead transitions. [2024-02-20 11:37:24,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 146 transitions, 486 flow [2024-02-20 11:37:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:37:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:37:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2024-02-20 11:37:24,065 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2024-02-20 11:37:24,068 INFO L308 CegarLoopForPetriNet]: 129 programPoint places, 2 predicate places. [2024-02-20 11:37:24,068 INFO L507 AbstractCegarLoop]: Abstraction has has 131 places, 146 transitions, 486 flow [2024-02-20 11:37:24,069 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-02-20 11:37:24,069 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:37:24,069 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-20 11:37:24,069 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:37:24,070 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-02-20 11:37:24,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:37:24,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1803075399, now seen corresponding path program 1 times [2024-02-20 11:37:24,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:37:24,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807244062] [2024-02-20 11:37:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:37:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:37:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:37:24,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:37:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:37:24,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:37:24,121 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:37:24,121 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-02-20 11:37:24,122 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-02-20 11:37:24,122 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-02-20 11:37:24,122 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-02-20 11:37:24,123 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-02-20 11:37:24,123 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 11:37:24,123 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-20 11:37:24,126 WARN L345 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:37:24,126 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-20 11:37:24,162 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 11:37:24,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 211 transitions, 449 flow [2024-02-20 11:37:24,207 INFO L124 PetriNetUnfolderBase]: 100/434 cut-off events. [2024-02-20 11:37:24,207 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-20 11:37:24,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 434 events. 100/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2472 event pairs, 1 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 314. Up to 12 conditions per place. [2024-02-20 11:37:24,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 211 transitions, 449 flow [2024-02-20 11:37:24,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 211 transitions, 449 flow [2024-02-20 11:37:24,218 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:37:24,219 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@48b5f396, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:37:24,220 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-20 11:37:24,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:37:24,223 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-02-20 11:37:24,223 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-20 11:37:24,223 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:37:24,224 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:37:24,224 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-02-20 11:37:24,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:37:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1173905287, now seen corresponding path program 1 times [2024-02-20 11:37:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:37:24,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558386343] [2024-02-20 11:37:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:37:24,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:37:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:37:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:37:24,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:37:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558386343] [2024-02-20 11:37:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558386343] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:37:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:37:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 11:37:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690736614] [2024-02-20 11:37:24,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:37:24,285 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:37:24,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:37:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:37:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:37:24,291 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 211 [2024-02-20 11:37:24,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 211 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-02-20 11:37:24,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:37:24,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 211 [2024-02-20 11:37:24,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand