./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/parallel-ticket-8.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 f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 02:10:05,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 02:10:05,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 02:10:05,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 02:10:05,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 02:10:05,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 02:10:05,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 02:10:05,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 02:10:05,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 02:10:05,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 02:10:05,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 02:10:05,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 02:10:05,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 02:10:05,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 02:10:05,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 02:10:05,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 02:10:05,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 02:10:05,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 02:10:05,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 02:10:05,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 02:10:05,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 02:10:05,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 02:10:05,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 02:10:05,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 02:10:05,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 02:10:05,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 02:10:05,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 02:10:05,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 02:10:05,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 02:10:05,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 02:10:05,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 02:10:05,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 02:10:05,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 02:10:05,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 02:10:05,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 02:10:05,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 02:10:05,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 02:10:05,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 02:10:05,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 02:10:05,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 02:10:05,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 02:10:05,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 02:10:05,195 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 02:10:05,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 02:10:05,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 02:10:05,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 02:10:05,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 02:10:05,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 02:10:05,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 02:10:05,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 02:10:05,198 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 02:10:05,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 02:10:05,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 02:10:05,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 02:10:05,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 02:10:05,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 02:10:05,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 02:10:05,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 02:10:05,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 02:10:05,201 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 02:10:05,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 02:10:05,201 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 02:10:05,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 02:10:05,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 02:10:05,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 02:10:05,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 02:10:05,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:10:05,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 02:10:05,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 02:10:05,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 02:10:05,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 02:10:05,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 02:10:05,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 02:10:05,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 02:10:05,204 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 02:10:05,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 02:10:05,204 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 02:10:05,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 02:10:05,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 02:10:05,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 02:10:05,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 02:10:05,542 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 02:10:05,543 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 02:10:05,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2023-08-31 02:10:06,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 02:10:06,930 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 02:10:06,930 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2023-08-31 02:10:06,937 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28551a26/5358e2f71c6c4aecbb2043de179f7851/FLAG8e7e4bbbb [2023-08-31 02:10:06,956 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28551a26/5358e2f71c6c4aecbb2043de179f7851 [2023-08-31 02:10:06,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 02:10:06,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 02:10:06,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 02:10:06,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 02:10:06,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 02:10:06,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:10:06" (1/1) ... [2023-08-31 02:10:06,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b23b0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:06, skipping insertion in model container [2023-08-31 02:10:06,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:10:06" (1/1) ... [2023-08-31 02:10:06,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 02:10:07,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 02:10:07,211 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/parallel-ticket-8.wvr.c[5274,5287] [2023-08-31 02:10:07,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:10:07,231 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 02:10:07,267 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/parallel-ticket-8.wvr.c[5274,5287] [2023-08-31 02:10:07,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:10:07,285 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:10:07,289 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:10:07,295 INFO L208 MainTranslator]: Completed translation [2023-08-31 02:10:07,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07 WrapperNode [2023-08-31 02:10:07,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 02:10:07,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 02:10:07,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 02:10:07,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 02:10:07,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,365 INFO L138 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 370 [2023-08-31 02:10:07,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 02:10:07,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 02:10:07,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 02:10:07,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 02:10:07,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 02:10:07,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 02:10:07,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 02:10:07,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 02:10:07,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (1/1) ... [2023-08-31 02:10:07,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:10:07,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:10:07,480 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) [2023-08-31 02:10:07,502 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 [2023-08-31 02:10:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 02:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 02:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 02:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 02:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 02:10:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 02:10:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 02:10:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 02:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 02:10:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 02:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-31 02:10:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-31 02:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 02:10:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-31 02:10:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-31 02:10:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-31 02:10:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-31 02:10:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-08-31 02:10:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-08-31 02:10:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2023-08-31 02:10:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2023-08-31 02:10:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 02:10:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 02:10:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 02:10:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 02:10:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 02:10:07,523 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 02:10:07,698 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 02:10:07,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 02:10:08,094 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 02:10:08,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 02:10:08,267 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 02:10:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:10:08 BoogieIcfgContainer [2023-08-31 02:10:08,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 02:10:08,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 02:10:08,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 02:10:08,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 02:10:08,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 02:10:06" (1/3) ... [2023-08-31 02:10:08,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73870ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:10:08, skipping insertion in model container [2023-08-31 02:10:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:10:07" (2/3) ... [2023-08-31 02:10:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73870ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:10:08, skipping insertion in model container [2023-08-31 02:10:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:10:08" (3/3) ... [2023-08-31 02:10:08,278 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2023-08-31 02:10:08,286 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 02:10:08,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 02:10:08,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 02:10:08,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 02:10:08,428 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 02:10:08,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 239 transitions, 542 flow [2023-08-31 02:10:08,602 INFO L130 PetriNetUnfolder]: 2/231 cut-off events. [2023-08-31 02:10:08,603 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 02:10:08,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 231 events. 2/231 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 104 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 184. Up to 2 conditions per place. [2023-08-31 02:10:08,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 239 transitions, 542 flow [2023-08-31 02:10:08,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 211 transitions, 470 flow [2023-08-31 02:10:08,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 02:10:08,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 211 transitions, 470 flow [2023-08-31 02:10:08,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 211 transitions, 470 flow [2023-08-31 02:10:08,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 211 transitions, 470 flow [2023-08-31 02:10:08,711 INFO L130 PetriNetUnfolder]: 2/211 cut-off events. [2023-08-31 02:10:08,711 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 02:10:08,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 211 events. 2/211 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 103 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 184. Up to 2 conditions per place. [2023-08-31 02:10:08,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 5502 [2023-08-31 02:10:18,810 INFO L134 LiptonReduction]: Checked pairs total: 27930 [2023-08-31 02:10:18,811 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-31 02:10:18,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 02:10:18,828 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;@427aac18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 02:10:18,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-31 02:10:18,840 INFO L130 PetriNetUnfolder]: 0/65 cut-off events. [2023-08-31 02:10:18,840 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 02:10:18,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:18,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:18,841 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 6 more)] === [2023-08-31 02:10:18,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1314481147, now seen corresponding path program 1 times [2023-08-31 02:10:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:18,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103050018] [2023-08-31 02:10:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:18,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103050018] [2023-08-31 02:10:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103050018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:21,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:21,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 02:10:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041201821] [2023-08-31 02:10:21,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 02:10:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:21,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 02:10:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-31 02:10:21,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 391 [2023-08-31 02:10:21,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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) [2023-08-31 02:10:21,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:21,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 391 [2023-08-31 02:10:21,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand