./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:37:28,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:37:28,161 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:37:28,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:37:28,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:37:28,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:37:28,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:37:28,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:37:28,192 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:37:28,192 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:37:28,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:37:28,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:37:28,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:37:28,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:37:28,196 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:37:28,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:37:28,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:37:28,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:37:28,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:37:28,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:37:28,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:37:28,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:37:28,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:37:28,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:37:28,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:37:28,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:37:28,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:37:28,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:37:28,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:37:28,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:37:28,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:37:28,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:37:28,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:28,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:37:28,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:37:28,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:37:28,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:37:28,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:37:28,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:37:28,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:37:28,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:37:28,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:37:28,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-11-09 02:37:28,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:37:28,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:37:28,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:37:28,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:37:28,426 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:37:28,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-09 02:37:29,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:37:29,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:37:29,863 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-09 02:37:29,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87aaa239e/1a24ef907a1f48ea8ac60dcd987eae8e/FLAG0aa38f449 [2024-11-09 02:37:30,230 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87aaa239e/1a24ef907a1f48ea8ac60dcd987eae8e [2024-11-09 02:37:30,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:37:30,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:37:30,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:30,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:37:30,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:37:30,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d8d28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30, skipping insertion in model container [2024-11-09 02:37:30,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:37:30,638 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2024-11-09 02:37:30,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:30,693 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:37:30,727 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2024-11-09 02:37:30,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:30,786 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:37:30,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30 WrapperNode [2024-11-09 02:37:30,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:30,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:30,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:37:30,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:37:30,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,834 INFO L138 Inliner]: procedures = 272, calls = 109, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 344 [2024-11-09 02:37:30,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:30,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:37:30,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:37:30,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:37:30,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,862 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2024-11-09 02:37:30,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:37:30,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:37:30,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:37:30,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:37:30,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:30,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:30,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:37:30,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:37:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:37:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:37:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:37:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:37:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:37:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:37:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:37:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:37:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:37:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 02:37:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:37:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:37:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:37:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:37:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:37:30,970 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:37:31,110 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:37:31,112 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:37:31,490 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:37:31,491 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:37:31,895 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:37:31,896 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-09 02:37:31,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:31 BoogieIcfgContainer [2024-11-09 02:37:31,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:37:31,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:37:31,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:37:31,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:37:31,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:37:30" (1/3) ... [2024-11-09 02:37:31,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734bd92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:31, skipping insertion in model container [2024-11-09 02:37:31,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30" (2/3) ... [2024-11-09 02:37:31,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734bd92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:31, skipping insertion in model container [2024-11-09 02:37:31,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:31" (3/3) ... [2024-11-09 02:37:31,904 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-11-09 02:37:31,919 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:37:31,919 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 02:37:31,919 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:37:31,962 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 02:37:31,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 137 transitions, 281 flow [2024-11-09 02:37:32,061 INFO L124 PetriNetUnfolderBase]: 65/223 cut-off events. [2024-11-09 02:37:32,062 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:37:32,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 223 events. 65/223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1052 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2024-11-09 02:37:32,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 137 transitions, 281 flow [2024-11-09 02:37:32,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 135 transitions, 274 flow [2024-11-09 02:37:32,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:32,094 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;@77a80d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:32,095 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:37:32,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:32,104 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-09 02:37:32,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:32,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:32,105 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 02:37:32,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:32,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -646762366, now seen corresponding path program 1 times [2024-11-09 02:37:32,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:32,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238190350] [2024-11-09 02:37:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:32,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:32,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238190350] [2024-11-09 02:37:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238190350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:32,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229177638] [2024-11-09 02:37:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:32,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:32,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-09 02:37:32,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 135 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:32,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:32,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-09 02:37:32,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:32,750 INFO L124 PetriNetUnfolderBase]: 823/2254 cut-off events. [2024-11-09 02:37:32,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:32,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 2254 events. 823/2254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16735 event pairs, 684 based on Foata normal form. 541/2536 useless extension candidates. Maximal degree in co-relation 3684. Up to 1544 conditions per place. [2024-11-09 02:37:32,767 INFO L140 encePairwiseOnDemand]: 101/137 looper letters, 61 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-11-09 02:37:32,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 336 flow [2024-11-09 02:37:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-09 02:37:32,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5279805352798054 [2024-11-09 02:37:32,779 INFO L175 Difference]: Start difference. First operand has 99 places, 135 transitions, 274 flow. Second operand 3 states and 217 transitions. [2024-11-09 02:37:32,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 336 flow [2024-11-09 02:37:32,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:32,785 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 220 flow [2024-11-09 02:37:32,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-09 02:37:32,793 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 3 predicate places. [2024-11-09 02:37:32,793 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 220 flow [2024-11-09 02:37:32,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:32,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:32,793 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:32,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:37:32,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:32,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1067654764, now seen corresponding path program 1 times [2024-11-09 02:37:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464408383] [2024-11-09 02:37:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464408383] [2024-11-09 02:37:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464408383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863693989] [2024-11-09 02:37:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:32,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:32,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:32,877 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) [2024-11-09 02:37:32,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:37:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:32,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:32,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:33,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863693989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:33,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217607154] [2024-11-09 02:37:33,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:33,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:33,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-09 02:37:33,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:33,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:33,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-09 02:37:33,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:33,327 INFO L124 PetriNetUnfolderBase]: 823/2257 cut-off events. [2024-11-09 02:37:33,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:33,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 2257 events. 823/2257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16738 event pairs, 684 based on Foata normal form. 0/1998 useless extension candidates. Maximal degree in co-relation 3807. Up to 1544 conditions per place. [2024-11-09 02:37:33,337 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 61 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-09 02:37:33,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 364 flow [2024-11-09 02:37:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 309 transitions. [2024-11-09 02:37:33,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3759124087591241 [2024-11-09 02:37:33,344 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 220 flow. Second operand 6 states and 309 transitions. [2024-11-09 02:37:33,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 364 flow [2024-11-09 02:37:33,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:33,347 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 252 flow [2024-11-09 02:37:33,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2024-11-09 02:37:33,348 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2024-11-09 02:37:33,348 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 252 flow [2024-11-09 02:37:33,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:33,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:33,349 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:33,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:37:33,549 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 [2024-11-09 02:37:33,551 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:33,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash 517989634, now seen corresponding path program 2 times [2024-11-09 02:37:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865324692] [2024-11-09 02:37:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865324692] [2024-11-09 02:37:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865324692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773179416] [2024-11-09 02:37:33,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:33,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:33,688 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) [2024-11-09 02:37:33,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:37:33,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:33,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:33,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:33,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:33,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:33,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773179416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:33,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:33,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:33,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107690919] [2024-11-09 02:37:33,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:33,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:33,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:33,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:33,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 137 [2024-11-09 02:37:33,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:33,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:33,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 137 [2024-11-09 02:37:33,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:34,132 INFO L124 PetriNetUnfolderBase]: 823/2263 cut-off events. [2024-11-09 02:37:34,133 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 02:37:34,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3856 conditions, 2263 events. 823/2263 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16730 event pairs, 684 based on Foata normal form. 6/2011 useless extension candidates. Maximal degree in co-relation 3798. Up to 1544 conditions per place. [2024-11-09 02:37:34,143 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 61 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-11-09 02:37:34,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 432 flow [2024-11-09 02:37:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 558 transitions. [2024-11-09 02:37:34,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33941605839416056 [2024-11-09 02:37:34,145 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 252 flow. Second operand 12 states and 558 transitions. [2024-11-09 02:37:34,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 432 flow [2024-11-09 02:37:34,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 112 transitions, 418 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:34,148 INFO L231 Difference]: Finished difference. Result has 125 places, 112 transitions, 322 flow [2024-11-09 02:37:34,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=322, PETRI_PLACES=125, PETRI_TRANSITIONS=112} [2024-11-09 02:37:34,149 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 26 predicate places. [2024-11-09 02:37:34,149 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 112 transitions, 322 flow [2024-11-09 02:37:34,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:34,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:34,150 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:34,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:37:34,350 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 [2024-11-09 02:37:34,351 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:34,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:34,355 INFO L85 PathProgramCache]: Analyzing trace with hash 753810370, now seen corresponding path program 3 times [2024-11-09 02:37:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:34,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514013799] [2024-11-09 02:37:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:34,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:34,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:34,428 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:34,429 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:37:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:37:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:37:34,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:37:34,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:37:34,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:37:34,431 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:34,433 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:34,433 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:37:34,460 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:37:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 182 transitions, 380 flow [2024-11-09 02:37:34,485 INFO L124 PetriNetUnfolderBase]: 105/361 cut-off events. [2024-11-09 02:37:34,485 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:37:34,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 361 events. 105/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1960 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 225. Up to 12 conditions per place. [2024-11-09 02:37:34,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 182 transitions, 380 flow [2024-11-09 02:37:34,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 182 transitions, 380 flow [2024-11-09 02:37:34,491 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:34,492 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;@77a80d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:34,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:37:34,514 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:34,515 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-11-09 02:37:34,515 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:37:34,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:34,515 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:34,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:34,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1844086936, now seen corresponding path program 1 times [2024-11-09 02:37:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955244703] [2024-11-09 02:37:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:34,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955244703] [2024-11-09 02:37:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955244703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:34,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:34,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77588193] [2024-11-09 02:37:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:34,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:34,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-09 02:37:34,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 182 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:34,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:34,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-09 02:37:34,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:38,447 INFO L124 PetriNetUnfolderBase]: 31325/60557 cut-off events. [2024-11-09 02:37:38,447 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-09 02:37:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105651 conditions, 60557 events. 31325/60557 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609057 event pairs, 27108 based on Foata normal form. 15651/69105 useless extension candidates. Maximal degree in co-relation 85934. Up to 44991 conditions per place. [2024-11-09 02:37:38,766 INFO L140 encePairwiseOnDemand]: 135/182 looper letters, 84 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-11-09 02:37:38,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 466 flow [2024-11-09 02:37:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-09 02:37:38,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5311355311355311 [2024-11-09 02:37:38,769 INFO L175 Difference]: Start difference. First operand has 133 places, 182 transitions, 380 flow. Second operand 3 states and 290 transitions. [2024-11-09 02:37:38,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 466 flow [2024-11-09 02:37:38,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 139 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:38,775 INFO L231 Difference]: Finished difference. Result has 136 places, 139 transitions, 304 flow [2024-11-09 02:37:38,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=136, PETRI_TRANSITIONS=139} [2024-11-09 02:37:38,776 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2024-11-09 02:37:38,776 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 139 transitions, 304 flow [2024-11-09 02:37:38,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:38,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:38,777 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:38,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:37:38,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:38,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:38,778 INFO L85 PathProgramCache]: Analyzing trace with hash 27355724, now seen corresponding path program 1 times [2024-11-09 02:37:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612144512] [2024-11-09 02:37:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:38,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:38,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612144512] [2024-11-09 02:37:38,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612144512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999299617] [2024-11-09 02:37:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:38,834 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) [2024-11-09 02:37:38,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:37:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:38,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:38,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:38,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999299617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:38,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143444803] [2024-11-09 02:37:38,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:38,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:38,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-09 02:37:38,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 139 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:38,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:38,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-09 02:37:38,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:42,373 INFO L124 PetriNetUnfolderBase]: 31325/60560 cut-off events. [2024-11-09 02:37:42,373 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-09 02:37:42,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105667 conditions, 60560 events. 31325/60560 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609001 event pairs, 27108 based on Foata normal form. 0/53457 useless extension candidates. Maximal degree in co-relation 105654. Up to 44991 conditions per place. [2024-11-09 02:37:42,876 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 84 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2024-11-09 02:37:42,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 494 flow [2024-11-09 02:37:42,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2024-11-09 02:37:42,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37545787545787546 [2024-11-09 02:37:42,881 INFO L175 Difference]: Start difference. First operand has 136 places, 139 transitions, 304 flow. Second operand 6 states and 410 transitions. [2024-11-09 02:37:42,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 494 flow [2024-11-09 02:37:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:42,886 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 336 flow [2024-11-09 02:37:42,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2024-11-09 02:37:42,887 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 10 predicate places. [2024-11-09 02:37:42,888 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 336 flow [2024-11-09 02:37:42,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:42,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:42,889 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:42,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:37:43,089 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 [2024-11-09 02:37:43,090 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:43,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash 250417256, now seen corresponding path program 2 times [2024-11-09 02:37:43,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:43,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541467497] [2024-11-09 02:37:43,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:43,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:43,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541467497] [2024-11-09 02:37:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541467497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:43,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257072325] [2024-11-09 02:37:43,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:43,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:43,181 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) [2024-11-09 02:37:43,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:37:43,262 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:43,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:43,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:43,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:43,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:43,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257072325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:43,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084228340] [2024-11-09 02:37:43,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:43,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:43,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 182 [2024-11-09 02:37:43,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:43,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:43,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 182 [2024-11-09 02:37:43,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:47,003 INFO L124 PetriNetUnfolderBase]: 31325/60566 cut-off events. [2024-11-09 02:37:47,003 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-09 02:37:47,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105704 conditions, 60566 events. 31325/60566 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 609178 event pairs, 27108 based on Foata normal form. 6/53470 useless extension candidates. Maximal degree in co-relation 105645. Up to 44991 conditions per place. [2024-11-09 02:37:47,490 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 84 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2024-11-09 02:37:47,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 148 transitions, 562 flow [2024-11-09 02:37:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 737 transitions. [2024-11-09 02:37:47,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3374542124542125 [2024-11-09 02:37:47,499 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 336 flow. Second operand 12 states and 737 transitions. [2024-11-09 02:37:47,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 148 transitions, 562 flow [2024-11-09 02:37:47,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 148 transitions, 548 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:47,503 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 406 flow [2024-11-09 02:37:47,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=406, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2024-11-09 02:37:47,504 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 26 predicate places. [2024-11-09 02:37:47,504 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 406 flow [2024-11-09 02:37:47,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:47,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:47,505 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:47,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:37:47,707 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 [2024-11-09 02:37:47,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:47,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash 32114152, now seen corresponding path program 3 times [2024-11-09 02:37:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:47,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544481132] [2024-11-09 02:37:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:47,729 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:47,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:47,751 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:47,751 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 02:37:47,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-09 02:37:47,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-09 02:37:47,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-09 02:37:47,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-09 02:37:47,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-09 02:37:47,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:37:47,752 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:47,753 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:47,753 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:37:47,785 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:37:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 227 transitions, 481 flow [2024-11-09 02:37:47,828 INFO L124 PetriNetUnfolderBase]: 148/510 cut-off events. [2024-11-09 02:37:47,829 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 02:37:47,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 510 events. 148/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2942 event pairs, 1 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2024-11-09 02:37:47,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 227 transitions, 481 flow [2024-11-09 02:37:47,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 227 transitions, 481 flow [2024-11-09 02:37:47,837 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:47,837 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;@77a80d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:47,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:37:47,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:47,846 INFO L124 PetriNetUnfolderBase]: 25/139 cut-off events. [2024-11-09 02:37:47,846 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:37:47,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:47,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:47,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:37:47,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 186627446, now seen corresponding path program 1 times [2024-11-09 02:37:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504110948] [2024-11-09 02:37:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:37:47,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:47,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504110948] [2024-11-09 02:37:47,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504110948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:47,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160490075] [2024-11-09 02:37:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:47,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:47,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 227 [2024-11-09 02:37:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 227 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:37:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:47,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 227 [2024-11-09 02:37:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand