./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_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_28-funptr_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 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:23:44,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:23:44,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:23:44,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:23:44,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:23:44,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:23:44,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:23:44,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:23:44,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:23:44,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:23:44,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:23:44,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:23:44,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:23:44,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:23:44,562 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:23:44,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:23:44,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:23:44,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:23:44,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:23:44,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:23:44,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:23:44,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:23:44,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:23:44,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:23:44,568 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:23:44,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:23:44,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:23:44,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:23:44,569 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:23:44,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:23:44,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:23:44,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:23:44,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:23:44,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:23:44,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:23:44,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:23:44,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:23:44,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:23:44,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:23:44,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:23:44,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:23:44,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:23:44,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f [2024-11-10 10:23:44,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:23:44,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:23:44,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:23:44,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:23:44,870 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:23:44,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-11-10 10:23:46,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:23:46,691 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:23:46,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-11-10 10:23:46,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b8c8807/897b355384424890ae90ee45bc921c11/FLAGd5e531e6a [2024-11-10 10:23:46,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b8c8807/897b355384424890ae90ee45bc921c11 [2024-11-10 10:23:46,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:23:46,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:23:46,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:23:46,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:23:47,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:23:47,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:46" (1/1) ... [2024-11-10 10:23:47,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e17342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47, skipping insertion in model container [2024-11-10 10:23:47,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:46" (1/1) ... [2024-11-10 10:23:47,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:23:47,557 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_28-funptr_racefree.i[39732,39745] [2024-11-10 10:23:47,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:23:47,624 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:23:47,670 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_28-funptr_racefree.i[39732,39745] [2024-11-10 10:23:47,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:23:47,742 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:23:47,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47 WrapperNode [2024-11-10 10:23:47,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:23:47,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:23:47,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:23:47,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:23:47,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,811 INFO L138 Inliner]: procedures = 252, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-11-10 10:23:47,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:23:47,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:23:47,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:23:47,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:23:47,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,858 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-10 10:23:47,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:23:47,884 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:23:47,884 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:23:47,884 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:23:47,885 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (1/1) ... [2024-11-10 10:23:47,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:23:47,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:23:47,939 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 10:23:47,954 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 10:23:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 10:23:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 10:23:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:23:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:23:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 10:23:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 10:23:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 10:23:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:23:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:23:48,006 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 10:23:48,162 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:23:48,164 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:23:48,337 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L911: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 10:23:48,338 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L911-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 10:23:48,392 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:23:48,393 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:23:48,568 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:23:48,568 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:23:48,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:48 BoogieIcfgContainer [2024-11-10 10:23:48,569 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:23:48,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:23:48,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:23:48,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:23:48,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:46" (1/3) ... [2024-11-10 10:23:48,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1125900a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:48, skipping insertion in model container [2024-11-10 10:23:48,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:47" (2/3) ... [2024-11-10 10:23:48,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1125900a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:48, skipping insertion in model container [2024-11-10 10:23:48,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:48" (3/3) ... [2024-11-10 10:23:48,577 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-11-10 10:23:48,594 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:23:48,595 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:23:48,595 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:23:48,642 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 10:23:48,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 66 transitions, 139 flow [2024-11-10 10:23:48,740 INFO L124 PetriNetUnfolderBase]: 17/97 cut-off events. [2024-11-10 10:23:48,741 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:23:48,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 17/97 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 290 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2024-11-10 10:23:48,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 66 transitions, 139 flow [2024-11-10 10:23:48,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 64 transitions, 132 flow [2024-11-10 10:23:48,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:48,766 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;@704e2443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:48,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:23:48,777 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:48,778 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-10 10:23:48,778 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:23:48,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:48,779 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:23:48,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:23:48,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1495877510, now seen corresponding path program 1 times [2024-11-10 10:23:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850789405] [2024-11-10 10:23:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:48,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:23:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:49,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:23:49,028 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:23:49,029 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-10 10:23:49,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-10 10:23:49,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:23:49,033 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:23:49,041 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:23:49,041 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:23:49,075 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:23:49,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 97 transitions, 210 flow [2024-11-10 10:23:49,135 INFO L124 PetriNetUnfolderBase]: 31/169 cut-off events. [2024-11-10 10:23:49,136 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:23:49,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 169 events. 31/169 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 637 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 101. Up to 8 conditions per place. [2024-11-10 10:23:49,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 97 transitions, 210 flow [2024-11-10 10:23:49,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 210 flow [2024-11-10 10:23:49,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:49,150 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;@704e2443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:49,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:23:49,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:49,164 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-11-10 10:23:49,164 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:23:49,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:49,165 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:23:49,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:23:49,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:49,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2144619321, now seen corresponding path program 1 times [2024-11-10 10:23:49,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648737469] [2024-11-10 10:23:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:49,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:23:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:23:49,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:23:49,293 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:23:49,293 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-10 10:23:49,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-10 10:23:49,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:23:49,293 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:23:49,296 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:23:49,296 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:23:49,333 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:23:49,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 128 transitions, 283 flow [2024-11-10 10:23:49,392 INFO L124 PetriNetUnfolderBase]: 50/258 cut-off events. [2024-11-10 10:23:49,392 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 10:23:49,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 258 events. 50/258 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1082 event pairs, 1 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 180. Up to 16 conditions per place. [2024-11-10 10:23:49,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 128 transitions, 283 flow [2024-11-10 10:23:49,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 128 transitions, 283 flow [2024-11-10 10:23:49,406 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:23:49,407 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;@704e2443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:23:49,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:23:49,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:23:49,424 INFO L124 PetriNetUnfolderBase]: 8/81 cut-off events. [2024-11-10 10:23:49,424 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:23:49,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:23:49,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:23:49,425 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:23:49,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:23:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash -666410532, now seen corresponding path program 1 times [2024-11-10 10:23:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:23:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794862196] [2024-11-10 10:23:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:23:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:23:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:23:49,525 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 10:23:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:23:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794862196] [2024-11-10 10:23:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794862196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:23:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:23:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:23:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18130455] [2024-11-10 10:23:49,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:23:49,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:23:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:23:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:23:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:23:49,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 128 [2024-11-10 10:23:49,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 128 transitions, 283 flow. Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 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 10:23:49,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:23:49,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 128 [2024-11-10 10:23:49,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:24:11,881 INFO L124 PetriNetUnfolderBase]: 158964/264306 cut-off events. [2024-11-10 10:24:11,881 INFO L125 PetriNetUnfolderBase]: For 2419/2419 co-relation queries the response was YES. [2024-11-10 10:24:12,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485006 conditions, 264306 events. 158964/264306 cut-off events. For 2419/2419 co-relation queries the response was YES. Maximal size of possible extension queue 4919. Compared 2596744 event pairs, 158691 based on Foata normal form. 84410/343219 useless extension candidates. Maximal degree in co-relation 194202. Up to 218981 conditions per place. [2024-11-10 10:24:13,280 INFO L140 encePairwiseOnDemand]: 105/128 looper letters, 55 selfloop transitions, 0 changer transitions 14/105 dead transitions. [2024-11-10 10:24:13,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 367 flow [2024-11-10 10:24:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:24:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:24:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2024-11-10 10:24:13,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-10 10:24:13,294 INFO L175 Difference]: Start difference. First operand has 109 places, 128 transitions, 283 flow. Second operand 2 states and 168 transitions. [2024-11-10 10:24:13,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 367 flow [2024-11-10 10:24:13,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 105 transitions, 367 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:24:13,311 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 200 flow [2024-11-10 10:24:13,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=200, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-11-10 10:24:13,317 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2024-11-10 10:24:13,318 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 200 flow [2024-11-10 10:24:13,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 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 10:24:13,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:13,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:13,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:24:13,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1420678725, now seen corresponding path program 1 times [2024-11-10 10:24:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466143675] [2024-11-10 10:24:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:13,403 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 10:24:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:13,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466143675] [2024-11-10 10:24:13,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466143675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:13,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:13,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073823205] [2024-11-10 10:24:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:13,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:24:13,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:24:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:24:13,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 128 [2024-11-10 10:24:13,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 10:24:13,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:13,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 128 [2024-11-10 10:24:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:24:26,456 INFO L124 PetriNetUnfolderBase]: 115234/191701 cut-off events. [2024-11-10 10:24:26,456 INFO L125 PetriNetUnfolderBase]: For 1455/1455 co-relation queries the response was YES. [2024-11-10 10:24:26,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351270 conditions, 191701 events. 115234/191701 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 3728. Compared 1827010 event pairs, 74760 based on Foata normal form. 0/185515 useless extension candidates. Maximal degree in co-relation 351264. Up to 158600 conditions per place. [2024-11-10 10:24:27,508 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 71 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-10 10:24:27,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 378 flow [2024-11-10 10:24:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:24:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:24:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-11-10 10:24:27,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-10 10:24:27,511 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 200 flow. Second operand 3 states and 188 transitions. [2024-11-10 10:24:27,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 378 flow [2024-11-10 10:24:27,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 376 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 10:24:27,519 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 210 flow [2024-11-10 10:24:27,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-11-10 10:24:27,520 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-11-10 10:24:27,521 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 210 flow [2024-11-10 10:24:27,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 10:24:27,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:27,521 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:24:27,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:24:27,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash 728879399, now seen corresponding path program 1 times [2024-11-10 10:24:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198496850] [2024-11-10 10:24:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:27,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:24:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:24:27,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:24:27,589 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:24:27,589 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-10 10:24:27,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-10 10:24:27,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:24:27,590 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 10:24:27,591 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:24:27,591 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:24:27,634 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:24:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 159 transitions, 358 flow [2024-11-10 10:24:27,673 INFO L124 PetriNetUnfolderBase]: 81/383 cut-off events. [2024-11-10 10:24:27,673 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 10:24:27,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 383 events. 81/383 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1740 event pairs, 6 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 282. Up to 32 conditions per place. [2024-11-10 10:24:27,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 159 transitions, 358 flow [2024-11-10 10:24:27,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 159 transitions, 358 flow [2024-11-10 10:24:27,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:24:27,686 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;@704e2443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:24:27,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:24:27,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:24:27,693 INFO L124 PetriNetUnfolderBase]: 8/81 cut-off events. [2024-11-10 10:24:27,693 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:24:27,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:24:27,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:24:27,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:24:27,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:24:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -836823812, now seen corresponding path program 1 times [2024-11-10 10:24:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:24:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826431740] [2024-11-10 10:24:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:24:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:24:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:24:27,731 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 10:24:27,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:24:27,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826431740] [2024-11-10 10:24:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826431740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:24:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:24:27,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:24:27,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938887408] [2024-11-10 10:24:27,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:24:27,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:24:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:24:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:24:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:24:27,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 159 [2024-11-10 10:24:27,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 159 transitions, 358 flow. Second operand has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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 10:24:27,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:24:27,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 159 [2024-11-10 10:24:27,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand