./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/peterson.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/pthread-atomic/peterson.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.graphml --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 ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:23:14,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:23:14,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:23:14,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:23:14,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:23:14,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:23:14,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:23:14,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:23:14,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:23:14,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:23:14,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:23:14,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:23:14,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:23:14,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:23:14,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:23:14,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:23:14,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:23:14,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:23:14,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:23:14,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:23:14,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:23:14,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:23:14,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:23:14,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:23:14,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:23:14,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:23:14,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:23:14,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:23:14,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:23:14,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:23:14,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:23:14,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:23:14,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:23:14,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:23:14,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:23:14,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:23:14,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:23:14,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:23:14,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:23:14,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:23:14,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:23:14,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:23:14,684 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:23:14,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:23:14,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:23:14,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:23:14,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:23:14,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:23:14,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:23:14,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:23:14,687 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:23:14,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:23:14,688 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:23:14,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:23:14,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:23:14,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:23:14,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:23:14,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:23:14,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:23:14,689 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:23:14,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:23:14,689 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:23:14,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:23:14,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:23:14,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:23:14,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:23:14,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:23:14,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:23:14,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:23:14,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:23:14,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:23:14,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:23:14,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:23:14,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:23:14,691 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:23:14,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:23:14,691 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:23:14,691 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:23:14,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:23:14,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:23:14,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:23:14,921 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:23:14,921 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:23:14,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-30 16:23:15,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:23:16,038 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:23:16,040 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-30 16:23:16,054 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6b6c271/21d41c1546894ab3a7bce7b12da96417/FLAG94196341a [2023-08-30 16:23:16,062 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6b6c271/21d41c1546894ab3a7bce7b12da96417 [2023-08-30 16:23:16,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:23:16,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:23:16,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:23:16,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:23:16,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:23:16,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faae757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16, skipping insertion in model container [2023-08-30 16:23:16,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:23:16,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:23:16,231 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:23:16,344 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2023-08-30 16:23:16,350 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2023-08-30 16:23:16,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:23:16,362 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:23:16,379 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:23:16,395 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2023-08-30 16:23:16,404 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2023-08-30 16:23:16,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:23:16,434 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:23:16,435 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:23:16,435 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:23:16,439 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:23:16,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16 WrapperNode [2023-08-30 16:23:16,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:23:16,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:23:16,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:23:16,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:23:16,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,484 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-08-30 16:23:16,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:23:16,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:23:16,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:23:16,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:23:16,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:23:16,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:23:16,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:23:16,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:23:16,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (1/1) ... [2023-08-30 16:23:16,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:23:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:23:16,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:23:16,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:23:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:23:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-30 16:23:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-30 16:23:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 16:23:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:23:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:23:16,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:23:16,575 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:23:16,697 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:23:16,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:23:16,794 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:23:16,798 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:23:16,798 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 16:23:16,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:23:16 BoogieIcfgContainer [2023-08-30 16:23:16,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:23:16,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:23:16,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:23:16,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:23:16,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:23:16" (1/3) ... [2023-08-30 16:23:16,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a645dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:23:16, skipping insertion in model container [2023-08-30 16:23:16,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:23:16" (2/3) ... [2023-08-30 16:23:16,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a645dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:23:16, skipping insertion in model container [2023-08-30 16:23:16,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:23:16" (3/3) ... [2023-08-30 16:23:16,804 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-08-30 16:23:16,809 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:23:16,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:23:16,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 16:23:16,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:23:16,874 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 16:23:16,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2023-08-30 16:23:16,952 INFO L130 PetriNetUnfolder]: 6/76 cut-off events. [2023-08-30 16:23:16,953 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:23:16,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-30 16:23:16,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 172 flow [2023-08-30 16:23:16,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 143 flow [2023-08-30 16:23:16,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:23:16,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 143 flow [2023-08-30 16:23:16,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 143 flow [2023-08-30 16:23:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 143 flow [2023-08-30 16:23:16,995 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-30 16:23:16,996 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:23:16,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 6/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-30 16:23:16,997 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-30 16:23:18,394 INFO L134 LiptonReduction]: Checked pairs total: 4187 [2023-08-30 16:23:18,394 INFO L136 LiptonReduction]: Total number of compositions: 44 [2023-08-30 16:23:18,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:23:18,406 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@370075ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:23:18,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 16:23:18,409 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-08-30 16:23:18,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:23:18,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:18,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:18,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:18,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:18,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1199357905, now seen corresponding path program 1 times [2023-08-30 16:23:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068382198] [2023-08-30 16:23:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:18,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:18,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068382198] [2023-08-30 16:23:18,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068382198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:18,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:18,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:23:18,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732270722] [2023-08-30 16:23:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:23:18,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:18,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:23:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:23:18,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 122 [2023-08-30 16:23:18,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2023-08-30 16:23:18,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:18,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 122 [2023-08-30 16:23:18,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:18,688 INFO L130 PetriNetUnfolder]: 163/358 cut-off events. [2023-08-30 16:23:18,689 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 16:23:18,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 358 events. 163/358 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1650 event pairs, 69 based on Foata normal form. 24/320 useless extension candidates. Maximal degree in co-relation 592. Up to 166 conditions per place. [2023-08-30 16:23:18,692 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 25 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2023-08-30 16:23:18,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 146 flow [2023-08-30 16:23:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:23:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:23:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-08-30 16:23:18,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6229508196721312 [2023-08-30 16:23:18,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-08-30 16:23:18,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-08-30 16:23:18,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:18,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-08-30 16:23:18,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-08-30 16:23:18,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2023-08-30 16:23:18,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2023-08-30 16:23:18,710 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 67 flow. Second operand 3 states and 228 transitions. [2023-08-30 16:23:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 146 flow [2023-08-30 16:23:18,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:23:18,713 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 80 flow [2023-08-30 16:23:18,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-30 16:23:18,722 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-30 16:23:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 80 flow [2023-08-30 16:23:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2023-08-30 16:23:18,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:18,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:23:18,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:18,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1903635038, now seen corresponding path program 1 times [2023-08-30 16:23:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:18,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278586731] [2023-08-30 16:23:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278586731] [2023-08-30 16:23:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278586731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:18,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:23:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554687633] [2023-08-30 16:23:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:23:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:23:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:23:18,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 122 [2023-08-30 16:23:18,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-08-30 16:23:18,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:18,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 122 [2023-08-30 16:23:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:18,874 INFO L130 PetriNetUnfolder]: 131/304 cut-off events. [2023-08-30 16:23:18,874 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-30 16:23:18,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 304 events. 131/304 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1364 event pairs, 82 based on Foata normal form. 20/300 useless extension candidates. Maximal degree in co-relation 271. Up to 182 conditions per place. [2023-08-30 16:23:18,876 INFO L137 encePairwiseOnDemand]: 117/122 looper letters, 20 selfloop transitions, 2 changer transitions 5/36 dead transitions. [2023-08-30 16:23:18,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 149 flow [2023-08-30 16:23:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:23:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:23:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-30 16:23:18,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6147540983606558 [2023-08-30 16:23:18,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-30 16:23:18,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-30 16:23:18,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:18,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-30 16:23:18,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2023-08-30 16:23:18,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2023-08-30 16:23:18,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2023-08-30 16:23:18,881 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 80 flow. Second operand 3 states and 225 transitions. [2023-08-30 16:23:18,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 149 flow [2023-08-30 16:23:18,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:23:18,883 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 82 flow [2023-08-30 16:23:18,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-30 16:23:18,883 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-30 16:23:18,884 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 82 flow [2023-08-30 16:23:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-08-30 16:23:18,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:18,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:18,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:23:18,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:18,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash -105818293, now seen corresponding path program 1 times [2023-08-30 16:23:18,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:18,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696736559] [2023-08-30 16:23:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:18,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696736559] [2023-08-30 16:23:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696736559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:18,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:18,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:23:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021998914] [2023-08-30 16:23:18,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:23:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:23:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:23:18,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 122 [2023-08-30 16:23:18,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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) [2023-08-30 16:23:18,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:18,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 122 [2023-08-30 16:23:18,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:19,134 INFO L130 PetriNetUnfolder]: 328/635 cut-off events. [2023-08-30 16:23:19,134 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2023-08-30 16:23:19,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 635 events. 328/635 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3012 event pairs, 55 based on Foata normal form. 26/659 useless extension candidates. Maximal degree in co-relation 1144. Up to 247 conditions per place. [2023-08-30 16:23:19,138 INFO L137 encePairwiseOnDemand]: 113/122 looper letters, 41 selfloop transitions, 10 changer transitions 29/84 dead transitions. [2023-08-30 16:23:19,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 84 transitions, 382 flow [2023-08-30 16:23:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 16:23:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 16:23:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 663 transitions. [2023-08-30 16:23:19,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434426229508197 [2023-08-30 16:23:19,142 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 663 transitions. [2023-08-30 16:23:19,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 663 transitions. [2023-08-30 16:23:19,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:19,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 663 transitions. [2023-08-30 16:23:19,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 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) [2023-08-30 16:23:19,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 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) [2023-08-30 16:23:19,152 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 122.0) internal successors, (1342), 11 states have internal predecessors, (1342), 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) [2023-08-30 16:23:19,152 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 82 flow. Second operand 10 states and 663 transitions. [2023-08-30 16:23:19,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 84 transitions, 382 flow [2023-08-30 16:23:19,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 84 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:23:19,155 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 166 flow [2023-08-30 16:23:19,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-30 16:23:19,156 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-30 16:23:19,156 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 166 flow [2023-08-30 16:23:19,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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) [2023-08-30 16:23:19,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:23:19,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:23:19,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:23:19,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 16:23:19,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:23:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 532751593, now seen corresponding path program 2 times [2023-08-30 16:23:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:23:19,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077976904] [2023-08-30 16:23:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:23:19,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:23:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:23:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:23:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:23:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077976904] [2023-08-30 16:23:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077976904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:23:19,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:23:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:23:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673293414] [2023-08-30 16:23:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:23:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:23:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:23:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:23:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:23:19,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 122 [2023-08-30 16:23:19,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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) [2023-08-30 16:23:19,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:23:19,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 122 [2023-08-30 16:23:19,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:23:19,340 INFO L130 PetriNetUnfolder]: 265/528 cut-off events. [2023-08-30 16:23:19,340 INFO L131 PetriNetUnfolder]: For 849/857 co-relation queries the response was YES. [2023-08-30 16:23:19,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 528 events. 265/528 cut-off events. For 849/857 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2404 event pairs, 38 based on Foata normal form. 24/548 useless extension candidates. Maximal degree in co-relation 1164. Up to 165 conditions per place. [2023-08-30 16:23:19,342 INFO L137 encePairwiseOnDemand]: 113/122 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-08-30 16:23:19,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 491 flow [2023-08-30 16:23:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:23:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:23:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 587 transitions. [2023-08-30 16:23:19,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346083788706739 [2023-08-30 16:23:19,345 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 587 transitions. [2023-08-30 16:23:19,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 587 transitions. [2023-08-30 16:23:19,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:23:19,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 587 transitions. [2023-08-30 16:23:19,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 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) [2023-08-30 16:23:19,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 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) [2023-08-30 16:23:19,362 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 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) [2023-08-30 16:23:19,362 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 166 flow. Second operand 9 states and 587 transitions. [2023-08-30 16:23:19,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 491 flow [2023-08-30 16:23:19,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 441 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-30 16:23:19,369 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-30 16:23:19,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-30 16:23:19,371 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-30 16:23:19,371 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-30 16:23:19,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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) [2023-08-30 16:23:19,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-30 16:23:19,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-30 16:23:19,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-30 16:23:19,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-30 16:23:19,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-30 16:23:19,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-30 16:23:19,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:23:19,376 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-30 16:23:19,379 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:23:19,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:23:19,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:23:19 BasicIcfg [2023-08-30 16:23:19,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:23:19,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:23:19,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:23:19,385 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:23:19,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:23:16" (3/4) ... [2023-08-30 16:23:19,387 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:23:19,390 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-30 16:23:19,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-30 16:23:19,393 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 16:23:19,393 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:23:19,393 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:23:19,393 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:23:19,416 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:23:19,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:23:19,417 INFO L158 Benchmark]: Toolchain (without parser) took 3352.23ms. Allocated memory was 65.0MB in the beginning and 107.0MB in the end (delta: 41.9MB). Free memory was 37.1MB in the beginning and 74.9MB in the end (delta: -37.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,417 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:23:19,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.55ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 36.8MB in the beginning and 58.9MB in the end (delta: -22.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.78ms. Allocated memory is still 88.1MB. Free memory was 58.9MB in the beginning and 56.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,418 INFO L158 Benchmark]: Boogie Preprocessor took 38.49ms. Allocated memory is still 88.1MB. Free memory was 56.9MB in the beginning and 55.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,418 INFO L158 Benchmark]: RCFGBuilder took 274.86ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 42.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,419 INFO L158 Benchmark]: TraceAbstraction took 2584.51ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 41.7MB in the beginning and 77.9MB in the end (delta: -36.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,420 INFO L158 Benchmark]: Witness Printer took 31.02ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 74.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:23:19,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.55ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 36.8MB in the beginning and 58.9MB in the end (delta: -22.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.78ms. Allocated memory is still 88.1MB. Free memory was 58.9MB in the beginning and 56.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.49ms. Allocated memory is still 88.1MB. Free memory was 56.9MB in the beginning and 55.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 274.86ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 42.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2584.51ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 41.7MB in the beginning and 77.9MB in the end (delta: -36.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 31.02ms. Allocated memory is still 107.0MB. Free memory was 77.9MB in the beginning and 74.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 68 PlacesBefore, 33 PlacesAfterwards, 67 TransitionsBefore, 29 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 44 TotalNumberOfCompositions, 4187 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2495, independent: 2278, independent conditional: 0, independent unconditional: 2278, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 648, independent: 619, independent conditional: 0, independent unconditional: 619, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2495, independent: 1659, independent conditional: 0, independent unconditional: 1659, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 648, unknown conditional: 0, unknown unconditional: 648] , Statistics on independence cache: Total cache size (in pairs): 154, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 530 IncrementalHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 19 mSDtfsCounter, 530 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:23:19,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE