./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/weaver/parallel-bakery-4.wvr.c -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 a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:30:18,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:30:18,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:30:18,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:30:18,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:30:18,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:30:18,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:30:18,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:30:18,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:30:18,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:30:18,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:30:18,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:30:18,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:30:18,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:30:18,158 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:30:18,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:30:18,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:30:18,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:30:18,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:30:18,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:30:18,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:30:18,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:30:18,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:30:18,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:30:18,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:30:18,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:30:18,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:30:18,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:30:18,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:30:18,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:30:18,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:30:18,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:30:18,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:30:18,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:30:18,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:30:18,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:30:18,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:30:18,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:30:18,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:30:18,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:30:18,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:30:18,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:30:18,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:30:18,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42fdc99fbc54512a7829bd297e0f02fe251a511098f304812399f6e9de1d8b6 [2024-01-27 15:30:18,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:30:18,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:30:18,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:30:18,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:30:18,424 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:30:18,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2024-01-27 15:30:19,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:30:19,665 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:30:19,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2024-01-27 15:30:19,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08827c063/2692b3fec83843f7865415434484c995/FLAGbe998e094 [2024-01-27 15:30:19,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08827c063/2692b3fec83843f7865415434484c995 [2024-01-27 15:30:19,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:30:19,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:30:19,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:30:19,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:30:19,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:30:19,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:19,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b1e855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19, skipping insertion in model container [2024-01-27 15:30:19,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:19,731 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:30:19,910 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c[8030,8043] [2024-01-27 15:30:19,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:30:19,925 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:30:19,964 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c[8030,8043] [2024-01-27 15:30:19,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:30:19,977 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:30:19,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19 WrapperNode [2024-01-27 15:30:19,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:30:19,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:30:19,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:30:19,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:30:19,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:19,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,035 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 408 [2024-01-27 15:30:20,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:30:20,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:30:20,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:30:20,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:30:20,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,088 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:30:20,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:30:20,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:30:20,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:30:20,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:30:20,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (1/1) ... [2024-01-27 15:30:20,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:30:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:20,147 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) [2024-01-27 15:30:20,168 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 [2024-01-27 15:30:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:30:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:30:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:30:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:30:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:30:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:30:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:30:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:30:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:30:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:30:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:30:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:30:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:30:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:30:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:30:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:30:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:30:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:30:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:30:20,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:30:20,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:30:20,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:30:20,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:30:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:30:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:30:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:30:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:30:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:30:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:30:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:30:20,197 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:30:20,284 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:30:20,285 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:30:20,637 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:30:20,637 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:30:20,947 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:30:20,948 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:30:20,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:30:20 BoogieIcfgContainer [2024-01-27 15:30:20,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:30:20,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:30:20,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:30:20,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:30:20,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:30:19" (1/3) ... [2024-01-27 15:30:20,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7496f8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:30:20, skipping insertion in model container [2024-01-27 15:30:20,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:19" (2/3) ... [2024-01-27 15:30:20,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7496f8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:30:20, skipping insertion in model container [2024-01-27 15:30:20,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:30:20" (3/3) ... [2024-01-27 15:30:20,956 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2024-01-27 15:30:20,964 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:30:20,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:30:20,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:30:20,972 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:30:21,029 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:30:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 91 transitions, 210 flow [2024-01-27 15:30:21,118 INFO L124 PetriNetUnfolderBase]: 0/87 cut-off events. [2024-01-27 15:30:21,119 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:30:21,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 87 events. 0/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 209 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:30:21,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 91 transitions, 210 flow [2024-01-27 15:30:21,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 86 transitions, 196 flow [2024-01-27 15:30:21,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:30:21,147 INFO L357 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=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;@58bb9bfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:30:21,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:30:21,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:30:21,168 INFO L124 PetriNetUnfolderBase]: 0/85 cut-off events. [2024-01-27 15:30:21,168 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:30:21,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:21,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:21,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:30:21,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:21,173 INFO L85 PathProgramCache]: Analyzing trace with hash 586426824, now seen corresponding path program 1 times [2024-01-27 15:30:21,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422618546] [2024-01-27 15:30:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:22,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:22,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422618546] [2024-01-27 15:30:22,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422618546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:22,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:30:22,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33503551] [2024-01-27 15:30:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:22,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:30:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:22,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:30:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:30:22,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2024-01-27 15:30:22,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 196 flow. Second operand has 11 states, 11 states have (on average 38.18181818181818) internal successors, (420), 11 states have internal predecessors, (420), 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) [2024-01-27 15:30:22,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:22,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2024-01-27 15:30:22,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:34,313 INFO L124 PetriNetUnfolderBase]: 133004/192623 cut-off events. [2024-01-27 15:30:34,314 INFO L125 PetriNetUnfolderBase]: For 6659/6659 co-relation queries the response was YES. [2024-01-27 15:30:34,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377630 conditions, 192623 events. 133004/192623 cut-off events. For 6659/6659 co-relation queries the response was YES. Maximal size of possible extension queue 5156. Compared 1557027 event pairs, 45563 based on Foata normal form. 1/192053 useless extension candidates. Maximal degree in co-relation 340428. Up to 68429 conditions per place. [2024-01-27 15:30:35,427 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 328 selfloop transitions, 25 changer transitions 33/415 dead transitions. [2024-01-27 15:30:35,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 415 transitions, 1755 flow [2024-01-27 15:30:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:30:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:30:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 849 transitions. [2024-01-27 15:30:35,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6664050235478807 [2024-01-27 15:30:35,454 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 196 flow. Second operand 14 states and 849 transitions. [2024-01-27 15:30:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 415 transitions, 1755 flow [2024-01-27 15:30:35,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 415 transitions, 1653 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:30:35,630 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 335 flow [2024-01-27 15:30:35,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=335, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2024-01-27 15:30:35,634 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2024-01-27 15:30:35,634 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 335 flow [2024-01-27 15:30:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.18181818181818) internal successors, (420), 11 states have internal predecessors, (420), 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) [2024-01-27 15:30:35,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:35,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:35,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:30:35,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:30:35,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash 975593174, now seen corresponding path program 2 times [2024-01-27 15:30:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:35,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733037700] [2024-01-27 15:30:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:36,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733037700] [2024-01-27 15:30:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733037700] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:36,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:36,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 15:30:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854687188] [2024-01-27 15:30:36,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:30:36,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:30:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:30:36,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 91 [2024-01-27 15:30:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 335 flow. Second operand has 9 states, 9 states have (on average 34.888888888888886) internal successors, (314), 9 states have internal predecessors, (314), 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) [2024-01-27 15:30:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 91 [2024-01-27 15:30:36,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand