./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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 ../sv-benchmarks/c/weaver/parallel-ticket-6.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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:30:21,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:30:21,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:30:21,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:30:21,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:30:21,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:30:21,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:30:21,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:30:21,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:30:21,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:30:21,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:30:21,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:30:21,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:30:21,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:30:21,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:30:21,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:30:21,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:30:21,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:30:21,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:30:21,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:30:21,099 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:30:21,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:30:21,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:30:21,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:30:21,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:30:21,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:30:21,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:30:21,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:30:21,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:30:21,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:30:21,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:30:21,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:30:21,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:30:21,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:30:21,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:30:21,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:30:21,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:30:21,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:30:21,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:30:21,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:30:21,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:30:21,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:30:21,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:30:21,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:30:21,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:30:21,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:30:21,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:30:21,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:30:21,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:30:21,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:30:21,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:30:21,137 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:30:21,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:30:21,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:30:21,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:30:21,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:30:21,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:30:21,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:30:21,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:30:21,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:30:21,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:30:21,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:30:21,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:30:21,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:30:21,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:30:21,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:30:21,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:30:21,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:21,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:30:21,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:30:21,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:30:21,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:30:21,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:30:21,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:30:21,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:30:21,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:30:21,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-07-19 21:30:21,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:30:21,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:30:21,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:30:21,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:30:21,382 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:30:21,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-07-19 21:30:21,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65e0363b/1302825f93f547a49f431a024c0f3d74/FLAG69532ce2c [2022-07-19 21:30:21,765 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:30:21,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-07-19 21:30:21,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65e0363b/1302825f93f547a49f431a024c0f3d74/FLAG69532ce2c [2022-07-19 21:30:22,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e65e0363b/1302825f93f547a49f431a024c0f3d74 [2022-07-19 21:30:22,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:30:22,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:30:22,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:22,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:30:22,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:30:22,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5f01ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22, skipping insertion in model container [2022-07-19 21:30:22,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:30:22,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:30:22,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-07-19 21:30:22,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:22,421 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:30:22,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-07-19 21:30:22,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:22,473 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:30:22,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22 WrapperNode [2022-07-19 21:30:22,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:22,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:22,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:30:22,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:30:22,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,531 INFO L137 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-07-19 21:30:22,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:22,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:30:22,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:30:22,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:30:22,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:30:22,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:30:22,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:30:22,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:30:22,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (1/1) ... [2022-07-19 21:30:22,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:22,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:30:22,603 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) [2022-07-19 21:30:22,627 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 [2022-07-19 21:30:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:30:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:30:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:30:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:30:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:30:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:30:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:30:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:30:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:30:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:30:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-19 21:30:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-19 21:30:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:30:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-19 21:30:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-19 21:30:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-19 21:30:22,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-19 21:30:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:30:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:30:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:30:22,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:30:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:30:22,645 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:30:22,776 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:30:22,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:30:23,103 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:30:23,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:30:23,181 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:30:23,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:23 BoogieIcfgContainer [2022-07-19 21:30:23,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:30:23,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:30:23,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:30:23,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:30:23,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:22" (1/3) ... [2022-07-19 21:30:23,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c080869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:23, skipping insertion in model container [2022-07-19 21:30:23,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:22" (2/3) ... [2022-07-19 21:30:23,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c080869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:23, skipping insertion in model container [2022-07-19 21:30:23,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:23" (3/3) ... [2022-07-19 21:30:23,190 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-07-19 21:30:23,193 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:30:23,199 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:30:23,199 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:30:23,199 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:30:23,247 INFO L135 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-07-19 21:30:23,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2022-07-19 21:30:23,336 INFO L129 PetriNetUnfolder]: 2/182 cut-off events. [2022-07-19 21:30:23,336 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:30:23,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-07-19 21:30:23,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 188 transitions, 424 flow [2022-07-19 21:30:23,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 165 transitions, 366 flow [2022-07-19 21:30:23,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:30:23,360 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6de80a01, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43c7f3e5 [2022-07-19 21:30:23,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:30:23,393 INFO L129 PetriNetUnfolder]: 2/164 cut-off events. [2022-07-19 21:30:23,393 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:30:23,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:23,394 INFO L200 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, 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, 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] [2022-07-19 21:30:23,394 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 4 more)] === [2022-07-19 21:30:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1163564544, now seen corresponding path program 1 times [2022-07-19 21:30:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26768484] [2022-07-19 21:30:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:30:24,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:24,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26768484] [2022-07-19 21:30:24,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26768484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:24,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:24,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 21:30:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32959824] [2022-07-19 21:30:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:30:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:30:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:30:24,226 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2022-07-19 21:30:24,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 165 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 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) [2022-07-19 21:30:24,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:24,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2022-07-19 21:30:24,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:45,175 INFO L129 PetriNetUnfolder]: 185942/279767 cut-off events. [2022-07-19 21:30:45,175 INFO L130 PetriNetUnfolder]: For 36645/36645 co-relation queries the response was YES. [2022-07-19 21:30:46,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 540509 conditions, 279767 events. 185942/279767 cut-off events. For 36645/36645 co-relation queries the response was YES. Maximal size of possible extension queue 9729. Compared 2525979 event pairs, 58254 based on Foata normal form. 4/276904 useless extension candidates. Maximal degree in co-relation 467504. Up to 77083 conditions per place. [2022-07-19 21:30:47,321 INFO L132 encePairwiseOnDemand]: 162/188 looper letters, 144 selfloop transitions, 31 changer transitions 27/308 dead transitions. [2022-07-19 21:30:47,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 308 transitions, 1152 flow [2022-07-19 21:30:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:30:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:30:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2256 transitions. [2022-07-19 21:30:47,338 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-19 21:30:47,339 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2256 transitions. [2022-07-19 21:30:47,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2256 transitions. [2022-07-19 21:30:47,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:47,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2256 transitions. [2022-07-19 21:30:47,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 141.0) internal successors, (2256), 16 states have internal predecessors, (2256), 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) [2022-07-19 21:30:47,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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) [2022-07-19 21:30:47,363 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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) [2022-07-19 21:30:47,364 INFO L186 Difference]: Start difference. First operand has 182 places, 165 transitions, 366 flow. Second operand 16 states and 2256 transitions. [2022-07-19 21:30:47,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 308 transitions, 1152 flow [2022-07-19 21:30:48,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 308 transitions, 1064 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-19 21:30:48,856 INFO L242 Difference]: Finished difference. Result has 195 places, 186 transitions, 552 flow [2022-07-19 21:30:48,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=552, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2022-07-19 21:30:48,862 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 13 predicate places. [2022-07-19 21:30:48,862 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 552 flow [2022-07-19 21:30:48,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 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) [2022-07-19 21:30:48,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:48,864 INFO L200 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, 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, 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] [2022-07-19 21:30:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:30:48,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:30:48,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:48,865 INFO L85 PathProgramCache]: Analyzing trace with hash -328563082, now seen corresponding path program 2 times [2022-07-19 21:30:48,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:48,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30167599] [2022-07-19 21:30:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:30:49,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30167599] [2022-07-19 21:30:49,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30167599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:49,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:49,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:30:49,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497128243] [2022-07-19 21:30:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:49,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:30:49,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:30:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:30:49,201 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 188 [2022-07-19 21:30:49,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 138.9) internal successors, (1389), 10 states have internal predecessors, (1389), 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) [2022-07-19 21:30:49,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:49,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 188 [2022-07-19 21:30:49,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand