./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_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_81-list_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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:24:42,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:24:42,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:24:42,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:24:42,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:24:42,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:24:42,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:24:42,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:24:42,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:24:42,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:24:42,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:24:42,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:24:42,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:24:42,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:24:42,988 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:24:42,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:24:42,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:24:42,989 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:24:42,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:24:42,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:24:42,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:24:42,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:24:42,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:24:42,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:24:42,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:24:42,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:24:42,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:24:42,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:24:42,992 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:24:42,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:24:42,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:24:42,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:24:42,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:24:42,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:24:42,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:24:42,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:24:42,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:24:42,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:24:42,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:24:42,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:24:42,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:24:42,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:24:42,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2024-11-10 10:24:43,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:24:43,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:24:43,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:24:43,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:24:43,360 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:24:43,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-11-10 10:24:44,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:24:45,184 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:24:45,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-11-10 10:24:45,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f945d345e/799ee325f98443f88b00d980833b2c2f/FLAG4ae8a4e38 [2024-11-10 10:24:45,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f945d345e/799ee325f98443f88b00d980833b2c2f [2024-11-10 10:24:45,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:24:45,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:24:45,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:24:45,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:24:45,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:24:45,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:45" (1/1) ... [2024-11-10 10:24:45,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324ec7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:45, skipping insertion in model container [2024-11-10 10:24:45,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:45" (1/1) ... [2024-11-10 10:24:45,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:24:45,808 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_81-list_racing.i[47038,47051] [2024-11-10 10:24:45,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:24:45,885 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:24:45,940 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_81-list_racing.i[47038,47051] [2024-11-10 10:24:45,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:24:46,034 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:24:46,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46 WrapperNode [2024-11-10 10:24:46,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:24:46,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:24:46,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:24:46,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:24:46,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,111 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 254 [2024-11-10 10:24:46,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:24:46,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:24:46,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:24:46,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:24:46,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,160 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 2, 5, 5, 14]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 0, 5, 5, 0]. The 10 writes are split as follows [0, 1, 1, 0, 0, 8]. [2024-11-10 10:24:46,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,172 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:24:46,191 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:24:46,191 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:24:46,191 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:24:46,192 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (1/1) ... [2024-11-10 10:24:46,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:24:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:24:46,236 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 10:24:46,249 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 10:24:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:24:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 10:24:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 10:24:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 10:24:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 10:24:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-10 10:24:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-10 10:24:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 10:24:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-10 10:24:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 10:24:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-10 10:24:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:24:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:24:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:24:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 10:24:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 10:24:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 10:24:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:24:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:24:46,350 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 10:24:46,582 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:24:46,584 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:24:47,001 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-10 10:24:47,005 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1043-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2024-11-10 10:24:47,005 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-10 10:24:47,005 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1042-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2024-11-10 10:24:47,007 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:24:47,007 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:24:47,503 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:24:47,503 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:24:47,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:47 BoogieIcfgContainer [2024-11-10 10:24:47,504 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:24:47,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:24:47,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:24:47,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:24:47,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:24:45" (1/3) ... [2024-11-10 10:24:47,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c32ae44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:47, skipping insertion in model container [2024-11-10 10:24:47,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:46" (2/3) ... [2024-11-10 10:24:47,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c32ae44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:47, skipping insertion in model container [2024-11-10 10:24:47,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:47" (3/3) ... [2024-11-10 10:24:47,518 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2024-11-10 10:24:47,537 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:24:47,538 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:24:47,538 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:24:47,623 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:24:47,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 87 transitions, 194 flow [2024-11-10 10:24:47,744 INFO L124 PetriNetUnfolderBase]: 50/197 cut-off events. [2024-11-10 10:24:47,744 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 10:24:47,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 197 events. 50/197 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 807 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2024-11-10 10:24:47,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 87 transitions, 194 flow [2024-11-10 10:24:47,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 85 transitions, 184 flow [2024-11-10 10:24:47,771 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:47,778 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;@733fca8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:47,778 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:24:47,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:47,788 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-10 10:24:47,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:24:47,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:47,789 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:24:47,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:24:47,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1696350468, now seen corresponding path program 1 times [2024-11-10 10:24:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090937323] [2024-11-10 10:24:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:48,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:48,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:48,130 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:48,132 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 10:24:48,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-10 10:24:48,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 10:24:48,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-10 10:24:48,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:24:48,137 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:24:48,144 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:48,144 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:24:48,248 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-10 10:24:48,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 147 transitions, 338 flow [2024-11-10 10:24:48,425 INFO L124 PetriNetUnfolderBase]: 185/639 cut-off events. [2024-11-10 10:24:48,426 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2024-11-10 10:24:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 639 events. 185/639 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3619 event pairs, 2 based on Foata normal form. 0/461 useless extension candidates. Maximal degree in co-relation 410. Up to 32 conditions per place. [2024-11-10 10:24:48,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 147 transitions, 338 flow [2024-11-10 10:24:48,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 147 transitions, 338 flow [2024-11-10 10:24:48,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:48,457 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;@733fca8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:48,457 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:24:48,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:48,474 INFO L124 PetriNetUnfolderBase]: 12/79 cut-off events. [2024-11-10 10:24:48,475 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:24:48,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:48,475 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:24:48,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:24:48,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash 357758197, now seen corresponding path program 1 times [2024-11-10 10:24:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:48,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522930215] [2024-11-10 10:24:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:48,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:48,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:48,658 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:48,658 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:24:48,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:24:48,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-10 10:24:48,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:24:48,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:24:48,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:24:48,660 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:24:48,661 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:48,661 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:24:48,758 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-10 10:24:48,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 207 transitions, 486 flow [2024-11-10 10:24:49,104 INFO L124 PetriNetUnfolderBase]: 652/1889 cut-off events. [2024-11-10 10:24:49,105 INFO L125 PetriNetUnfolderBase]: For 419/435 co-relation queries the response was YES. [2024-11-10 10:24:49,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 1889 events. 652/1889 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12613 event pairs, 64 based on Foata normal form. 0/1413 useless extension candidates. Maximal degree in co-relation 1289. Up to 192 conditions per place. [2024-11-10 10:24:49,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 207 transitions, 486 flow [2024-11-10 10:24:49,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 207 transitions, 486 flow [2024-11-10 10:24:49,192 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:49,193 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;@733fca8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:49,194 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:24:49,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:49,215 INFO L124 PetriNetUnfolderBase]: 30/168 cut-off events. [2024-11-10 10:24:49,215 INFO L125 PetriNetUnfolderBase]: For 20/24 co-relation queries the response was YES. [2024-11-10 10:24:49,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:49,215 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:24:49,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 10:24:49,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1507430875, now seen corresponding path program 1 times [2024-11-10 10:24:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675087796] [2024-11-10 10:24:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:49,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:49,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:49,424 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:49,425 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-10 10:24:49,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-10 10:24:49,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-10 10:24:49,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-10 10:24:49,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-10 10:24:49,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-10 10:24:49,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:24:49,426 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:24:49,427 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:49,427 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:24:49,541 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-11-10 10:24:49,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 267 transitions, 638 flow [2024-11-10 10:24:51,126 INFO L124 PetriNetUnfolderBase]: 2639/6323 cut-off events. [2024-11-10 10:24:51,127 INFO L125 PetriNetUnfolderBase]: For 2144/2194 co-relation queries the response was YES. [2024-11-10 10:24:51,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 6323 events. 2639/6323 cut-off events. For 2144/2194 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 47814 event pairs, 626 based on Foata normal form. 0/4939 useless extension candidates. Maximal degree in co-relation 4357. Up to 1024 conditions per place. [2024-11-10 10:24:51,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 267 transitions, 638 flow [2024-11-10 10:24:51,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 267 transitions, 638 flow [2024-11-10 10:24:51,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:51,403 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;@733fca8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:51,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 10:24:51,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:51,514 INFO L124 PetriNetUnfolderBase]: 63/317 cut-off events. [2024-11-10 10:24:51,514 INFO L125 PetriNetUnfolderBase]: For 56/68 co-relation queries the response was YES. [2024-11-10 10:24:51,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:51,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:51,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:24:51,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash -592923545, now seen corresponding path program 1 times [2024-11-10 10:24:51,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971502236] [2024-11-10 10:24:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:51,642 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 10:24:51,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971502236] [2024-11-10 10:24:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971502236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:51,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999005335] [2024-11-10 10:24:51,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:51,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:51,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 267 [2024-11-10 10:24:51,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 267 transitions, 638 flow. Second operand has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 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 10:24:51,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:51,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 267 [2024-11-10 10:24:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand