./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.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/ldv-races/race-1_3-join.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 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 --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 16:59:43,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:59:43,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:59:43,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:59:43,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:59:43,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:59:43,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:59:43,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:59:43,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:59:43,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:59:43,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:59:43,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:59:43,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:59:43,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:59:43,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:59:43,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:59:43,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:59:43,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:59:43,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:59:43,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:59:43,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:59:43,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:59:43,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:59:43,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:59:43,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:59:43,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:59:43,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:59:43,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:59:43,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:59:43,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:59:43,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:59:43,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:59:43,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:59:43,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:59:43,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:59:43,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:59:43,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:59:43,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:59:43,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:59:43,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:59:43,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:59:43,175 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:59:43,200 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:59:43,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:59:43,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:59:43,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:59:43,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:59:43,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:59:43,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:59:43,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:59:43,202 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:59:43,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:59:43,203 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:59:43,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:59:43,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:59:43,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:59:43,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:59:43,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:59:43,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:59:43,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:59:43,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:43,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:59:43,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:59:43,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:59:43,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:59:43,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:59:43,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:59:43,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:59:43,206 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:59:43,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:59:43,206 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:59:43,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:59:43,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:59:43,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:59:43,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:59:43,430 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:59:43,430 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:59:43,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2023-08-30 16:59:44,349 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:59:44,573 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:59:44,573 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2023-08-30 16:59:44,584 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67e677b0/e311de54199b4fd9a9f2e3bcafca2eba/FLAGf8d709a9f [2023-08-30 16:59:44,594 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67e677b0/e311de54199b4fd9a9f2e3bcafca2eba [2023-08-30 16:59:44,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:59:44,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:59:44,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:44,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:59:44,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:59:44,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:44" (1/1) ... [2023-08-30 16:59:44,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df12cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:44, skipping insertion in model container [2023-08-30 16:59:44,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:44" (1/1) ... [2023-08-30 16:59:44,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:59:44,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:59:45,063 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2023-08-30 16:59:45,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:45,090 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:59:45,115 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2023-08-30 16:59:45,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:45,198 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:45,199 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:45,203 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:59:45,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45 WrapperNode [2023-08-30 16:59:45,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:45,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:45,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:59:45,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:59:45,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,238 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-08-30 16:59:45,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:45,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:59:45,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:59:45,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:59:45,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:59:45,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:59:45,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:59:45,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:59:45,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (1/1) ... [2023-08-30 16:59:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:45,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:59:45,286 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 16:59:45,300 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 16:59:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:59:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:59:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:59:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:59:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 16:59:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:59:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 16:59:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:59:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:59:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:59:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 16:59:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 16:59:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:59:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:59:45,317 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 16:59:45,558 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:59:45,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:59:45,724 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:59:45,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:59:45,745 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:59:45,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:45 BoogieIcfgContainer [2023-08-30 16:59:45,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:59:45,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:59:45,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:59:45,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:59:45,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:59:44" (1/3) ... [2023-08-30 16:59:45,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502c0a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:45, skipping insertion in model container [2023-08-30 16:59:45,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:45" (2/3) ... [2023-08-30 16:59:45,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502c0a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:45, skipping insertion in model container [2023-08-30 16:59:45,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:45" (3/3) ... [2023-08-30 16:59:45,754 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2023-08-30 16:59:45,759 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:59:45,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:59:45,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 16:59:45,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:59:45,811 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 16:59:45,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 95 transitions, 198 flow [2023-08-30 16:59:45,886 INFO L130 PetriNetUnfolder]: 4/109 cut-off events. [2023-08-30 16:59:45,886 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:59:45,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 4/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 149 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-08-30 16:59:45,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 95 transitions, 198 flow [2023-08-30 16:59:45,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 82 transitions, 170 flow [2023-08-30 16:59:45,894 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:59:45,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-30 16:59:45,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-30 16:59:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 170 flow [2023-08-30 16:59:45,924 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2023-08-30 16:59:45,925 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:59:45,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 2/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2023-08-30 16:59:45,926 INFO L119 LiptonReduction]: Number of co-enabled transitions 182 [2023-08-30 16:59:48,479 INFO L134 LiptonReduction]: Checked pairs total: 227 [2023-08-30 16:59:48,479 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-30 16:59:48,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:59:48,491 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;@548bf123, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:59:48,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 16:59:48,492 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 16:59:48,493 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:48,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:48,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 16:59:48,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 16:59:48,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash 369, now seen corresponding path program 1 times [2023-08-30 16:59:48,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:48,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115447369] [2023-08-30 16:59:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:48,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:48,645 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 16:59:48,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:48,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115447369] [2023-08-30 16:59:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115447369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:48,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:48,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 16:59:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119092611] [2023-08-30 16:59:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 16:59:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 16:59:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 16:59:48,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 189 [2023-08-30 16:59:48,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 28 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 16:59:48,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:48,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 189 [2023-08-30 16:59:48,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:48,698 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-08-30 16:59:48,699 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:59:48,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 13 events. 3/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 3 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 14 conditions per place. [2023-08-30 16:59:48,700 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 5 selfloop transitions, 0 changer transitions 2/7 dead transitions. [2023-08-30 16:59:48,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 34 flow [2023-08-30 16:59:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 16:59:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 16:59:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2023-08-30 16:59:48,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2023-08-30 16:59:48,711 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 181 transitions. [2023-08-30 16:59:48,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 181 transitions. [2023-08-30 16:59:48,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:48,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 181 transitions. [2023-08-30 16:59:48,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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 16:59:48,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 16:59:48,724 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 16:59:48,725 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 28 flow. Second operand 2 states and 181 transitions. [2023-08-30 16:59:48,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 34 flow [2023-08-30 16:59:48,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:59:48,728 INFO L231 Difference]: Finished difference. Result has 10 places, 5 transitions, 11 flow [2023-08-30 16:59:48,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=11, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2023-08-30 16:59:48,732 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2023-08-30 16:59:48,732 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 11 flow [2023-08-30 16:59:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 16:59:48,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:48,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 16:59:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:59:48,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 16:59:48,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 11300175, now seen corresponding path program 1 times [2023-08-30 16:59:48,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:48,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587636394] [2023-08-30 16:59:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:59:48,895 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 16:59:48,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:59:48,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587636394] [2023-08-30 16:59:48,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587636394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:59:48,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:59:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:59:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370931042] [2023-08-30 16:59:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:59:48,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:59:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:59:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:59:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:59:48,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 189 [2023-08-30 16:59:48,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 16:59:48,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:59:48,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 189 [2023-08-30 16:59:48,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:59:48,933 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-30 16:59:48,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:59:48,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-30 16:59:48,934 INFO L137 encePairwiseOnDemand]: 186/189 looper letters, 3 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2023-08-30 16:59:48,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 25 flow [2023-08-30 16:59:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:59:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:59:48,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 16:59:48,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43033509700176364 [2023-08-30 16:59:48,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 16:59:48,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 16:59:48,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:59:48,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 16:59:48,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 16:59:48,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 16:59:48,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 16:59:48,942 INFO L175 Difference]: Start difference. First operand has 10 places, 5 transitions, 11 flow. Second operand 3 states and 244 transitions. [2023-08-30 16:59:48,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 25 flow [2023-08-30 16:59:48,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 25 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:59:48,943 INFO L231 Difference]: Finished difference. Result has 11 places, 5 transitions, 19 flow [2023-08-30 16:59:48,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2023-08-30 16:59:48,943 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-08-30 16:59:48,944 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 19 flow [2023-08-30 16:59:48,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 16:59:48,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:59:48,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 16:59:48,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:59:48,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 16:59:48,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:59:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash 350308921, now seen corresponding path program 1 times [2023-08-30 16:59:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:59:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648480487] [2023-08-30 16:59:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:59:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:59:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:59:48,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 16:59:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:59:49,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 16:59:49,006 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 16:59:49,006 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 16:59:49,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 16:59:49,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-30 16:59:49,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-30 16:59:49,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-30 16:59:49,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:59:49,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 16:59:49,013 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:59:49,013 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:59:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:59:49 BasicIcfg [2023-08-30 16:59:49,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:59:49,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:59:49,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:59:49,030 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:59:49,030 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:45" (3/4) ... [2023-08-30 16:59:49,031 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 16:59:49,059 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:59:49,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:59:49,059 INFO L158 Benchmark]: Toolchain (without parser) took 4462.50ms. Allocated memory was 73.4MB in the beginning and 138.4MB in the end (delta: 65.0MB). Free memory was 48.2MB in the beginning and 93.0MB in the end (delta: -44.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,060 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 73.4MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:59:49,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.42ms. Allocated memory was 73.4MB in the beginning and 104.9MB in the end (delta: 31.5MB). Free memory was 47.9MB in the beginning and 71.6MB in the end (delta: -23.8MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.27ms. Allocated memory is still 104.9MB. Free memory was 71.6MB in the beginning and 68.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,065 INFO L158 Benchmark]: Boogie Preprocessor took 21.48ms. Allocated memory is still 104.9MB. Free memory was 68.4MB in the beginning and 65.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,066 INFO L158 Benchmark]: RCFGBuilder took 486.79ms. Allocated memory is still 104.9MB. Free memory was 65.8MB in the beginning and 75.7MB in the end (delta: -9.8MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,066 INFO L158 Benchmark]: TraceAbstraction took 3280.19ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 75.1MB in the beginning and 95.1MB in the end (delta: -19.9MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,066 INFO L158 Benchmark]: Witness Printer took 29.03ms. Allocated memory is still 138.4MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:59:49,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 73.4MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 605.42ms. Allocated memory was 73.4MB in the beginning and 104.9MB in the end (delta: 31.5MB). Free memory was 47.9MB in the beginning and 71.6MB in the end (delta: -23.8MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.27ms. Allocated memory is still 104.9MB. Free memory was 71.6MB in the beginning and 68.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.48ms. Allocated memory is still 104.9MB. Free memory was 68.4MB in the beginning and 65.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 486.79ms. Allocated memory is still 104.9MB. Free memory was 65.8MB in the beginning and 75.7MB in the end (delta: -9.8MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3280.19ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 75.1MB in the beginning and 95.1MB in the end (delta: -19.9MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Witness Printer took 29.03ms. Allocated memory is still 138.4MB. Free memory was 95.1MB in the beginning and 93.0MB 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: 2.6s, 83 PlacesBefore, 14 PlacesAfterwards, 82 TransitionsBefore, 11 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 7 FixpointIterations, 67 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 227 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 194, independent: 170, independent conditional: 0, independent unconditional: 170, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 111, independent: 100, independent conditional: 0, independent unconditional: 100, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 194, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 111, unknown conditional: 0, unknown unconditional: 111] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL, EXPR 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1713] 0 return 0; [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) [L1735] CALL 0 module_exit() [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, status={5:0}, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1726] CALL 0 ldv_assert(pdev==4) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 100 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: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-30 16:59:49,090 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE