./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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_61-invariant_racing.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 b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:24:02,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:24:02,921 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:24:02,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:24:02,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:24:02,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:24:02,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:24:02,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:24:02,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:24:02,960 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:24:02,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:24:02,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:24:02,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:24:02,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:24:02,963 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:24:02,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:24:02,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:24:02,964 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:24:02,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:24:02,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:24:02,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:24:02,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:24:02,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:24:02,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:24:02,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:24:02,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:24:02,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:24:02,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:24:02,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:24:02,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:24:02,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:24:02,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:24:02,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:24:02,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:24:02,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:24:02,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:24:02,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:24:02,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:24:02,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:24:02,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:24:02,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:24:02,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:24:02,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-11-10 10:24:03,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:24:03,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:24:03,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:24:03,301 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:24:03,301 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:24:03,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-10 10:24:04,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:24:05,014 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:24:05,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-11-10 10:24:05,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98a39f90/b5143ac3a1ed4f49a54d3ea3fc31d91d/FLAGedb54c21f [2024-11-10 10:24:05,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98a39f90/b5143ac3a1ed4f49a54d3ea3fc31d91d [2024-11-10 10:24:05,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:24:05,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:24:05,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:24:05,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:24:05,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:24:05,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219f5e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05, skipping insertion in model container [2024-11-10 10:24:05,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:24:05,687 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_61-invariant_racing.i[30176,30189] [2024-11-10 10:24:05,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:24:05,736 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:24:05,794 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_61-invariant_racing.i[30176,30189] [2024-11-10 10:24:05,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:24:05,850 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:24:05,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05 WrapperNode [2024-11-10 10:24:05,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:24:05,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:24:05,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:24:05,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:24:05,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,893 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-11-10 10:24:05,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:24:05,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:24:05,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:24:05,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:24:05,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,936 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-10 10:24:05,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,944 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:24:05,958 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:24:05,962 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:24:05,962 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:24:05,963 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (1/1) ... [2024-11-10 10:24:05,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:24:05,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:24:06,008 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) [2024-11-10 10:24:06,014 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 [2024-11-10 10:24:06,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:24:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:24:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:24:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 10:24:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:24:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:24:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:24:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 10:24:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:24:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:24:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:24:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 10:24:06,084 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 10:24:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:24:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:24:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:24:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:24:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 10:24:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:24:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:24:06,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:24:06,087 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:24:06,278 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:24:06,281 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:24:06,496 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 10:24:06,500 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L713-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 10:24:06,574 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:24:06,574 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:24:06,721 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:24:06,725 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:24:06,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:06 BoogieIcfgContainer [2024-11-10 10:24:06,726 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:24:06,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:24:06,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:24:06,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:24:06,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:24:05" (1/3) ... [2024-11-10 10:24:06,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b68c05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:06, skipping insertion in model container [2024-11-10 10:24:06,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:05" (2/3) ... [2024-11-10 10:24:06,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b68c05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:06, skipping insertion in model container [2024-11-10 10:24:06,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:06" (3/3) ... [2024-11-10 10:24:06,739 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-11-10 10:24:06,755 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:24:06,755 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:24:06,756 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:24:06,804 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 10:24:06,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 89 transitions, 185 flow [2024-11-10 10:24:06,911 INFO L124 PetriNetUnfolderBase]: 30/136 cut-off events. [2024-11-10 10:24:06,914 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:24:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 30/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 485 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 84. Up to 6 conditions per place. [2024-11-10 10:24:06,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 89 transitions, 185 flow [2024-11-10 10:24:06,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 87 transitions, 178 flow [2024-11-10 10:24:06,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:06,950 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;@b22f384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:06,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:24:06,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:06,964 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-10 10:24:06,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:24:06,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:06,966 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:24:06,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:06,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1223233915, now seen corresponding path program 1 times [2024-11-10 10:24:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:06,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402029442] [2024-11-10 10:24:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:07,123 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:07,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:07,174 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:07,175 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-10 10:24:07,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-10 10:24:07,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:24:07,178 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:24:07,182 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:07,182 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:24:07,223 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:24:07,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 127 transitions, 270 flow [2024-11-10 10:24:07,284 INFO L124 PetriNetUnfolderBase]: 51/231 cut-off events. [2024-11-10 10:24:07,285 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:24:07,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 231 events. 51/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1026 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 140. Up to 9 conditions per place. [2024-11-10 10:24:07,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 127 transitions, 270 flow [2024-11-10 10:24:07,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 127 transitions, 270 flow [2024-11-10 10:24:07,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:07,298 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b22f384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:07,298 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:24:07,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:07,312 INFO L124 PetriNetUnfolderBase]: 13/82 cut-off events. [2024-11-10 10:24:07,312 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:24:07,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:07,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:07,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:07,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1313731729, now seen corresponding path program 1 times [2024-11-10 10:24:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:07,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537790902] [2024-11-10 10:24:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:24:07,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:07,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537790902] [2024-11-10 10:24:07,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537790902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:07,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:07,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:07,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699734254] [2024-11-10 10:24:07,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:07,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:07,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 127 [2024-11-10 10:24:07,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 127 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 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) [2024-11-10 10:24:07,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 127 [2024-11-10 10:24:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:24:09,615 INFO L124 PetriNetUnfolderBase]: 7605/16122 cut-off events. [2024-11-10 10:24:09,615 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-10 10:24:09,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27874 conditions, 16122 events. 7605/16122 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 147636 event pairs, 7033 based on Foata normal form. 5397/21087 useless extension candidates. Maximal degree in co-relation 11205. Up to 11675 conditions per place. [2024-11-10 10:24:09,715 INFO L140 encePairwiseOnDemand]: 104/127 looper letters, 41 selfloop transitions, 0 changer transitions 13/104 dead transitions. [2024-11-10 10:24:09,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 324 flow [2024-11-10 10:24:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:24:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:24:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2024-11-10 10:24:09,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125984251968503 [2024-11-10 10:24:09,729 INFO L175 Difference]: Start difference. First operand has 105 places, 127 transitions, 270 flow. Second operand 2 states and 181 transitions. [2024-11-10 10:24:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 324 flow [2024-11-10 10:24:09,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:24:09,736 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 192 flow [2024-11-10 10:24:09,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=192, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2024-11-10 10:24:09,744 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 1 predicate places. [2024-11-10 10:24:09,745 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 192 flow [2024-11-10 10:24:09,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 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) [2024-11-10 10:24:09,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:09,746 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:24:09,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:24:09,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:09,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1831672818, now seen corresponding path program 1 times [2024-11-10 10:24:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:09,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536854476] [2024-11-10 10:24:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:09,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:09,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:09,913 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:09,914 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-10 10:24:09,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-10 10:24:09,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:24:09,915 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:24:09,915 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:09,916 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:24:09,946 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:24:09,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 165 transitions, 357 flow [2024-11-10 10:24:09,981 INFO L124 PetriNetUnfolderBase]: 77/343 cut-off events. [2024-11-10 10:24:09,982 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2024-11-10 10:24:09,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 343 events. 77/343 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1628 event pairs, 1 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 242. Up to 16 conditions per place. [2024-11-10 10:24:09,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 165 transitions, 357 flow [2024-11-10 10:24:09,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 165 transitions, 357 flow [2024-11-10 10:24:09,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:09,994 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;@b22f384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:09,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:24:10,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:10,000 INFO L124 PetriNetUnfolderBase]: 13/82 cut-off events. [2024-11-10 10:24:10,001 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:24:10,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:10,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:10,001 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:10,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash -603776780, now seen corresponding path program 1 times [2024-11-10 10:24:10,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:10,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330296060] [2024-11-10 10:24:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:24:10,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330296060] [2024-11-10 10:24:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330296060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888193353] [2024-11-10 10:24:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:10,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:10,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 165 [2024-11-10 10:24:10,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 165 transitions, 357 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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) [2024-11-10 10:24:10,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:10,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 165 [2024-11-10 10:24:10,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:24:35,760 INFO L124 PetriNetUnfolderBase]: 165288/288237 cut-off events. [2024-11-10 10:24:35,761 INFO L125 PetriNetUnfolderBase]: For 3931/3931 co-relation queries the response was YES. [2024-11-10 10:24:36,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512977 conditions, 288237 events. 165288/288237 cut-off events. For 3931/3931 co-relation queries the response was YES. Maximal size of possible extension queue 5899. Compared 3153642 event pairs, 153063 based on Foata normal form. 99974/380765 useless extension candidates. Maximal degree in co-relation 87339. Up to 223233 conditions per place. [2024-11-10 10:24:37,679 INFO L140 encePairwiseOnDemand]: 136/165 looper letters, 55 selfloop transitions, 0 changer transitions 14/136 dead transitions. [2024-11-10 10:24:37,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 429 flow [2024-11-10 10:24:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:24:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:24:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 236 transitions. [2024-11-10 10:24:37,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7151515151515152 [2024-11-10 10:24:37,682 INFO L175 Difference]: Start difference. First operand has 137 places, 165 transitions, 357 flow. Second operand 2 states and 236 transitions. [2024-11-10 10:24:37,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 429 flow [2024-11-10 10:24:37,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 136 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:24:37,691 INFO L231 Difference]: Finished difference. Result has 138 places, 122 transitions, 262 flow [2024-11-10 10:24:37,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2024-11-10 10:24:37,692 INFO L277 CegarLoopForPetriNet]: 137 programPoint places, 1 predicate places. [2024-11-10 10:24:37,692 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 262 flow [2024-11-10 10:24:37,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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) [2024-11-10 10:24:37,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:37,693 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:24:37,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:24:37,694 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:37,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1977430934, now seen corresponding path program 1 times [2024-11-10 10:24:37,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:37,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552230634] [2024-11-10 10:24:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:37,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:37,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:37,754 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:37,755 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-10 10:24:37,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-10 10:24:37,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:24:37,756 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:24:37,757 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:37,757 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:24:37,796 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:24:37,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 203 transitions, 446 flow [2024-11-10 10:24:37,860 INFO L124 PetriNetUnfolderBase]: 115/491 cut-off events. [2024-11-10 10:24:37,861 INFO L125 PetriNetUnfolderBase]: For 48/53 co-relation queries the response was YES. [2024-11-10 10:24:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 491 events. 115/491 cut-off events. For 48/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2426 event pairs, 6 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 367. Up to 32 conditions per place. [2024-11-10 10:24:37,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 203 transitions, 446 flow [2024-11-10 10:24:37,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 203 transitions, 446 flow [2024-11-10 10:24:37,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:37,877 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;@b22f384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:37,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:24:37,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:37,883 INFO L124 PetriNetUnfolderBase]: 13/82 cut-off events. [2024-11-10 10:24:37,883 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:24:37,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:37,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:37,883 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:37,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash -302979361, now seen corresponding path program 1 times [2024-11-10 10:24:37,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967561639] [2024-11-10 10:24:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:24:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967561639] [2024-11-10 10:24:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967561639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15354974] [2024-11-10 10:24:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:37,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:37,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 203 [2024-11-10 10:24:37,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 203 transitions, 446 flow. Second operand has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 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) [2024-11-10 10:24:37,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:37,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 203 [2024-11-10 10:24:37,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand