./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/weaver/spaghetti.wvr.c -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 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:47:31,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:47:31,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:47:31,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:47:31,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:47:31,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:47:31,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:47:31,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:47:31,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:47:31,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:47:31,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:47:31,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:47:31,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:47:31,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:47:31,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:47:31,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:47:31,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:47:31,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:47:31,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:47:31,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:47:31,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:47:31,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:47:31,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:47:31,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:47:31,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:47:31,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:47:31,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:47:31,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:47:31,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:47:31,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:47:31,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:47:31,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:47:31,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:47:31,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:47:31,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:47:31,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:47:31,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:47:31,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:47:31,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:47:31,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:47:31,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:47:31,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:47:31,561 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:47:31,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:47:31,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:47:31,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:47:31,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:47:31,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:47:31,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:47:31,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:47:31,563 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:47:31,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:47:31,563 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:47:31,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:47:31,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:47:31,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:47:31,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:47:31,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:47:31,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:47:31,564 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:47:31,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:47:31,564 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:47:31,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:47:31,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:47:31,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:47:31,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:47:31,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:47:31,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:47:31,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:47:31,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:47:31,567 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:47:31,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:47:31,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:47:31,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:47:31,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:47:31,794 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:47:31,795 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:47:31,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2023-09-01 14:47:32,667 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:47:32,833 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:47:32,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2023-09-01 14:47:32,838 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ecfa14a0/857f6734e5b64ac4a32621ea477ac0ba/FLAG223a6f802 [2023-09-01 14:47:32,846 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ecfa14a0/857f6734e5b64ac4a32621ea477ac0ba [2023-09-01 14:47:32,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:47:32,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:47:32,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:47:32,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:47:32,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:47:32,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:32,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f38cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32, skipping insertion in model container [2023-09-01 14:47:32,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:32,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:47:32,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:47:32,966 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3221,3234] [2023-09-01 14:47:32,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:47:32,975 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:47:32,988 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3221,3234] [2023-09-01 14:47:32,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:47:32,994 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:47:32,994 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:47:32,998 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:47:32,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32 WrapperNode [2023-09-01 14:47:32,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:47:32,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:47:33,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:47:33,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:47:33,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,039 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-09-01 14:47:33,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:47:33,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:47:33,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:47:33,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:47:33,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:47:33,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:47:33,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:47:33,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:47:33,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (1/1) ... [2023-09-01 14:47:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:47:33,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:47:33,106 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) [2023-09-01 14:47:33,126 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 [2023-09-01 14:47:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:47:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:47:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:47:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:47:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:47:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 14:47:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 14:47:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 14:47:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:47:33,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:47:33,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:47:33,138 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:47:33,228 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:47:33,229 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:47:33,399 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:47:33,411 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:47:33,411 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 14:47:33,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:47:33 BoogieIcfgContainer [2023-09-01 14:47:33,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:47:33,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:47:33,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:47:33,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:47:33,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:47:32" (1/3) ... [2023-09-01 14:47:33,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8b79e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:47:33, skipping insertion in model container [2023-09-01 14:47:33,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:47:32" (2/3) ... [2023-09-01 14:47:33,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8b79e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:47:33, skipping insertion in model container [2023-09-01 14:47:33,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:47:33" (3/3) ... [2023-09-01 14:47:33,417 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2023-09-01 14:47:33,421 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:47:33,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:47:33,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:47:33,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:47:33,490 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 14:47:33,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 127 transitions, 286 flow [2023-09-01 14:47:33,570 INFO L130 PetriNetUnfolder]: 9/123 cut-off events. [2023-09-01 14:47:33,570 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:47:33,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 123 events. 9/123 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 120 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-09-01 14:47:33,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 127 transitions, 286 flow [2023-09-01 14:47:33,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 111 transitions, 246 flow [2023-09-01 14:47:33,581 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:47:33,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 111 transitions, 246 flow [2023-09-01 14:47:33,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 111 transitions, 246 flow [2023-09-01 14:47:33,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 111 transitions, 246 flow [2023-09-01 14:47:33,630 INFO L130 PetriNetUnfolder]: 9/111 cut-off events. [2023-09-01 14:47:33,631 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:47:33,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 111 events. 9/111 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-09-01 14:47:33,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 3110 [2023-09-01 14:47:35,495 INFO L134 LiptonReduction]: Checked pairs total: 4792 [2023-09-01 14:47:35,496 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-09-01 14:47:35,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:47:35,509 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;@583f922d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:47:35,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 14:47:35,513 INFO L130 PetriNetUnfolder]: 4/30 cut-off events. [2023-09-01 14:47:35,514 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 14:47:35,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:47:35,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:47:35,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:47:35,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:47:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1455752920, now seen corresponding path program 1 times [2023-09-01 14:47:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:47:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420994300] [2023-09-01 14:47:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:47:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:47:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:47:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:47:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:47:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420994300] [2023-09-01 14:47:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420994300] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:47:36,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:47:36,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 14:47:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063212757] [2023-09-01 14:47:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:47:36,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 14:47:36,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:47:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 14:47:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 14:47:36,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 224 [2023-09-01 14:47:36,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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) [2023-09-01 14:47:36,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:47:36,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 224 [2023-09-01 14:47:36,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:47:36,267 INFO L130 PetriNetUnfolder]: 1522/2251 cut-off events. [2023-09-01 14:47:36,267 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2023-09-01 14:47:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 2251 events. 1522/2251 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10261 event pairs, 559 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 3734. Up to 911 conditions per place. [2023-09-01 14:47:36,282 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 53 selfloop transitions, 10 changer transitions 1/68 dead transitions. [2023-09-01 14:47:36,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 312 flow [2023-09-01 14:47:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 14:47:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 14:47:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2023-09-01 14:47:36,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2023-09-01 14:47:36,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 469 transitions. [2023-09-01 14:47:36,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 469 transitions. [2023-09-01 14:47:36,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:47:36,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 469 transitions. [2023-09-01 14:47:36,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2023-09-01 14:47:36,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 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) [2023-09-01 14:47:36,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 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) [2023-09-01 14:47:36,322 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 469 transitions. [2023-09-01 14:47:36,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 312 flow [2023-09-01 14:47:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 280 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 14:47:36,329 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 148 flow [2023-09-01 14:47:36,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-09-01 14:47:36,332 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-09-01 14:47:36,333 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 148 flow [2023-09-01 14:47:36,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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) [2023-09-01 14:47:36,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:47:36,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:47:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:47:36,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 14:47:36,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:47:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash -480740440, now seen corresponding path program 2 times [2023-09-01 14:47:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:47:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250565891] [2023-09-01 14:47:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:47:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:47:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:47:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:47:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:47:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250565891] [2023-09-01 14:47:36,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250565891] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:47:36,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:47:36,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 14:47:36,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441202601] [2023-09-01 14:47:36,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:47:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 14:47:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:47:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 14:47:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 14:47:36,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 224 [2023-09-01 14:47:36,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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) [2023-09-01 14:47:36,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:47:36,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 224 [2023-09-01 14:47:36,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:47:36,713 INFO L130 PetriNetUnfolder]: 1766/2643 cut-off events. [2023-09-01 14:47:36,714 INFO L131 PetriNetUnfolder]: For 1920/1944 co-relation queries the response was YES. [2023-09-01 14:47:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 2643 events. 1766/2643 cut-off events. For 1920/1944 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12528 event pairs, 669 based on Foata normal form. 1/2632 useless extension candidates. Maximal degree in co-relation 2218. Up to 1321 conditions per place. [2023-09-01 14:47:36,721 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2023-09-01 14:47:36,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 85 transitions, 472 flow [2023-09-01 14:47:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 14:47:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 14:47:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-09-01 14:47:36,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223214285714286 [2023-09-01 14:47:36,723 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-09-01 14:47:36,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-09-01 14:47:36,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:47:36,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-09-01 14:47:36,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-09-01 14:47:36,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 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) [2023-09-01 14:47:36,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 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) [2023-09-01 14:47:36,735 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 148 flow. Second operand 4 states and 468 transitions. [2023-09-01 14:47:36,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 85 transitions, 472 flow [2023-09-01 14:47:36,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 85 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 14:47:36,737 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-09-01 14:47:36,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-09-01 14:47:36,738 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-09-01 14:47:36,738 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-09-01 14:47:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 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) [2023-09-01 14:47:36,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 14:47:36,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-09-01 14:47:36,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-09-01 14:47:36,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-09-01 14:47:36,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 14:47:36,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 14:47:36,742 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-09-01 14:47:36,744 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 14:47:36,744 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 14:47:36,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:47:36 BasicIcfg [2023-09-01 14:47:36,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 14:47:36,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 14:47:36,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 14:47:36,747 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 14:47:36,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:47:33" (3/4) ... [2023-09-01 14:47:36,749 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 14:47:36,752 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 14:47:36,752 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 14:47:36,752 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 14:47:36,753 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-09-01 14:47:36,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-09-01 14:47:36,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 14:47:36,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 14:47:36,755 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 14:47:36,777 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 14:47:36,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 14:47:36,778 INFO L158 Benchmark]: Toolchain (without parser) took 3929.04ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 56.9MB in the beginning and 70.2MB in the end (delta: -13.3MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,778 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 14:47:36,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.65ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 45.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.54ms. Allocated memory is still 79.7MB. Free memory was 45.3MB in the beginning and 43.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,779 INFO L158 Benchmark]: Boogie Preprocessor took 42.66ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 42.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,779 INFO L158 Benchmark]: RCFGBuilder took 328.23ms. Allocated memory is still 79.7MB. Free memory was 42.0MB in the beginning and 50.2MB in the end (delta: -8.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,779 INFO L158 Benchmark]: TraceAbstraction took 3332.55ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 49.4MB in the beginning and 72.3MB in the end (delta: -22.8MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,779 INFO L158 Benchmark]: Witness Printer took 30.79ms. Allocated memory is still 119.5MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:47:36,781 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 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.65ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 45.3MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.54ms. Allocated memory is still 79.7MB. Free memory was 45.3MB in the beginning and 43.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.66ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 42.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.23ms. Allocated memory is still 79.7MB. Free memory was 42.0MB in the beginning and 50.2MB in the end (delta: -8.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3332.55ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 49.4MB in the beginning and 72.3MB in the end (delta: -22.8MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Witness Printer took 30.79ms. Allocated memory is still 119.5MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). 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: 1.9s, 115 PlacesBefore, 40 PlacesAfterwards, 111 TransitionsBefore, 31 TransitionsAfterwards, 3110 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 13 ConcurrentYvCompositions, 5 ChoiceCompositions, 97 TotalNumberOfCompositions, 4792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3147, independent: 3061, independent conditional: 0, independent unconditional: 3061, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1732, independent: 1690, independent conditional: 0, independent unconditional: 1690, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3147, independent: 1371, independent conditional: 0, independent unconditional: 1371, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 1732, unknown conditional: 0, unknown unconditional: 1732] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 127]: 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 9 procedures, 165 locations, 5 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: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 272 IncrementalHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 9 mSDtfsCounter, 272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=1, InterpolantAutomatonStates: 8, 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, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 14:47:36,799 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