./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.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_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:24:02,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:24:02,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:24:02,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:24:02,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:24:02,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:24:02,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:24:02,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:24:02,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:24:02,189 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:24:02,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:24:02,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:24:02,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:24:02,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:24:02,194 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:24:02,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:24:02,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:24:02,195 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:24:02,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:24:02,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:24:02,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:24:02,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:24:02,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:24:02,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:24:02,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:24:02,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:24:02,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:24:02,200 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:24:02,200 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:24:02,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:24:02,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:24:02,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:24:02,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:24:02,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:24:02,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:24:02,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:24:02,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:24:02,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:24:02,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:24:02,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:24:02,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:24:02,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:24:02,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2024-11-10 10:24:02,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:24:02,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:24:02,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:24:02,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:24:02,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:24:02,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-10 10:24:03,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:24:04,012 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:24:04,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-11-10 10:24:04,025 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b8ef3e2/1b9af1022e0b4ff5bf0c6d1c6934d19f/FLAGff96b0594 [2024-11-10 10:24:04,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b8ef3e2/1b9af1022e0b4ff5bf0c6d1c6934d19f [2024-11-10 10:24:04,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:24:04,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:24:04,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:24:04,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:24:04,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:24:04,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e618486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04, skipping insertion in model container [2024-11-10 10:24:04,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:24:04,360 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_60-invariant_racefree.i[30176,30189] [2024-11-10 10:24:04,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:24:04,409 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:24:04,440 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_60-invariant_racefree.i[30176,30189] [2024-11-10 10:24:04,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:24:04,492 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:24:04,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04 WrapperNode [2024-11-10 10:24:04,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:24:04,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:24:04,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:24:04,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:24:04,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,548 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 155 [2024-11-10 10:24:04,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:24:04,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:24:04,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:24:04,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:24:04,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,589 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 10:24:04,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,594 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:24:04,599 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:24:04,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:24:04,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:24:04,600 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (1/1) ... [2024-11-10 10:24:04,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:24:04,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:24:04,648 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 10:24:04,656 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 10:24:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:24:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:24:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:24:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 10:24:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:24:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:24:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:24:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 10:24:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 10:24:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:24:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:24:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:24:04,704 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 10:24:04,825 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:24:04,827 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:24:04,971 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 10:24:04,972 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 10:24:05,055 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:24:05,055 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:24:05,172 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:24:05,172 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:24:05,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:05 BoogieIcfgContainer [2024-11-10 10:24:05,173 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:24:05,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:24:05,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:24:05,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:24:05,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:24:04" (1/3) ... [2024-11-10 10:24:05,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfe9474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:05, skipping insertion in model container [2024-11-10 10:24:05,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:24:04" (2/3) ... [2024-11-10 10:24:05,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfe9474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:24:05, skipping insertion in model container [2024-11-10 10:24:05,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:24:05" (3/3) ... [2024-11-10 10:24:05,180 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-11-10 10:24:05,194 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:24:05,194 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 10:24:05,194 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:24:05,226 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 10:24:05,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 96 transitions, 199 flow [2024-11-10 10:24:05,309 INFO L124 PetriNetUnfolderBase]: 33/143 cut-off events. [2024-11-10 10:24:05,310 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:24:05,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 33/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 585 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-11-10 10:24:05,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 96 transitions, 199 flow [2024-11-10 10:24:05,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 94 transitions, 192 flow [2024-11-10 10:24:05,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:05,337 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;@503d72f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:05,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:24:05,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:05,348 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-11-10 10:24:05,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:24:05,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:05,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:24:05,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-10 10:24:05,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:05,355 INFO L85 PathProgramCache]: Analyzing trace with hash 978269342, now seen corresponding path program 1 times [2024-11-10 10:24:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:05,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305077473] [2024-11-10 10:24:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:05,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:05,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:05,604 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:05,607 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 10:24:05,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-10 10:24:05,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-10 10:24:05,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-10 10:24:05,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:24:05,634 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:24:05,637 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:05,637 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:24:05,664 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:24:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 141 transitions, 298 flow [2024-11-10 10:24:05,715 INFO L124 PetriNetUnfolderBase]: 57/245 cut-off events. [2024-11-10 10:24:05,716 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:24:05,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 245 events. 57/245 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1167 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 147. Up to 9 conditions per place. [2024-11-10 10:24:05,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 141 transitions, 298 flow [2024-11-10 10:24:05,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 141 transitions, 298 flow [2024-11-10 10:24:05,726 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:05,727 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;@503d72f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:05,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:24:05,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:05,741 INFO L124 PetriNetUnfolderBase]: 10/78 cut-off events. [2024-11-10 10:24:05,741 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:24:05,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:05,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:05,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:24:05,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1768596711, now seen corresponding path program 1 times [2024-11-10 10:24:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767657672] [2024-11-10 10:24:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:05,841 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 10:24:05,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:05,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767657672] [2024-11-10 10:24:05,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767657672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:05,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:05,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932951809] [2024-11-10 10:24:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:05,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:05,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 141 [2024-11-10 10:24:05,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 141 transitions, 298 flow. Second operand has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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 10:24:05,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:05,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 141 [2024-11-10 10:24:05,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:24:07,873 INFO L124 PetriNetUnfolderBase]: 9875/20153 cut-off events. [2024-11-10 10:24:07,873 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-10 10:24:07,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35181 conditions, 20153 events. 9875/20153 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 187397 event pairs, 9225 based on Foata normal form. 8341/27909 useless extension candidates. Maximal degree in co-relation 14082. Up to 14941 conditions per place. [2024-11-10 10:24:08,077 INFO L140 encePairwiseOnDemand]: 112/141 looper letters, 54 selfloop transitions, 0 changer transitions 0/112 dead transitions. [2024-11-10 10:24:08,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 112 transitions, 348 flow [2024-11-10 10:24:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:24:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:24:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2024-11-10 10:24:08,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056737588652482 [2024-11-10 10:24:08,088 INFO L175 Difference]: Start difference. First operand has 113 places, 141 transitions, 298 flow. Second operand 2 states and 199 transitions. [2024-11-10 10:24:08,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 112 transitions, 348 flow [2024-11-10 10:24:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:24:08,095 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 240 flow [2024-11-10 10:24:08,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-11-10 10:24:08,103 INFO L277 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2024-11-10 10:24:08,103 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 240 flow [2024-11-10 10:24:08,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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 10:24:08,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:08,104 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:24:08,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:24:08,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:24:08,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash 306312482, now seen corresponding path program 1 times [2024-11-10 10:24:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:08,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979727866] [2024-11-10 10:24:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:08,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:08,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:08,168 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:08,168 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:24:08,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:24:08,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-10 10:24:08,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:24:08,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:24:08,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:24:08,169 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:24:08,169 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:08,169 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:24:08,201 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:24:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 186 transitions, 399 flow [2024-11-10 10:24:08,237 INFO L124 PetriNetUnfolderBase]: 86/364 cut-off events. [2024-11-10 10:24:08,238 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 10:24:08,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 364 events. 86/364 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1831 event pairs, 1 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 256. Up to 16 conditions per place. [2024-11-10 10:24:08,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 186 transitions, 399 flow [2024-11-10 10:24:08,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 186 transitions, 399 flow [2024-11-10 10:24:08,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:08,250 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;@503d72f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:08,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:24:08,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:08,254 INFO L124 PetriNetUnfolderBase]: 10/78 cut-off events. [2024-11-10 10:24:08,254 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:24:08,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:08,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:08,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-10 10:24:08,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash -8070815, now seen corresponding path program 1 times [2024-11-10 10:24:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662844053] [2024-11-10 10:24:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:08,280 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 10:24:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662844053] [2024-11-10 10:24:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662844053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:08,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:08,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:08,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994392187] [2024-11-10 10:24:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:08,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:08,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 186 [2024-11-10 10:24:08,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 186 transitions, 399 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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 10:24:08,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:08,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 186 [2024-11-10 10:24:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:24:39,976 INFO L124 PetriNetUnfolderBase]: 244284/410881 cut-off events. [2024-11-10 10:24:39,976 INFO L125 PetriNetUnfolderBase]: For 2891/2891 co-relation queries the response was YES. [2024-11-10 10:24:41,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738934 conditions, 410881 events. 244284/410881 cut-off events. For 2891/2891 co-relation queries the response was YES. Maximal size of possible extension queue 9260. Compared 4548232 event pairs, 228661 based on Foata normal form. 181556/581269 useless extension candidates. Maximal degree in co-relation 111625. Up to 326108 conditions per place. [2024-11-10 10:24:42,930 INFO L140 encePairwiseOnDemand]: 148/186 looper letters, 71 selfloop transitions, 0 changer transitions 0/148 dead transitions. [2024-11-10 10:24:42,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 148 transitions, 465 flow [2024-11-10 10:24:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:24:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:24:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2024-11-10 10:24:42,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706989247311828 [2024-11-10 10:24:42,934 INFO L175 Difference]: Start difference. First operand has 149 places, 186 transitions, 399 flow. Second operand 2 states and 263 transitions. [2024-11-10 10:24:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 148 transitions, 465 flow [2024-11-10 10:24:42,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 148 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:24:42,944 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 323 flow [2024-11-10 10:24:42,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=323, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2024-11-10 10:24:42,945 INFO L277 CegarLoopForPetriNet]: 149 programPoint places, 1 predicate places. [2024-11-10 10:24:42,945 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 323 flow [2024-11-10 10:24:42,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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 10:24:42,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:42,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:42,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:24:42,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-10 10:24:42,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:42,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1880643098, now seen corresponding path program 1 times [2024-11-10 10:24:42,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:42,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337426799] [2024-11-10 10:24:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:42,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:43,070 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 10:24:43,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337426799] [2024-11-10 10:24:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337426799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:43,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:24:43,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025818934] [2024-11-10 10:24:43,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:43,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:24:43,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:24:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:24:43,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 186 [2024-11-10 10:24:43,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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 10:24:43,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:43,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 186 [2024-11-10 10:24:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand