./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:20:19,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:20:19,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:20:20,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:20:20,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:20:20,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:20:20,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:20:20,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:20:20,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:20:20,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:20:20,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:20:20,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:20:20,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:20:20,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:20:20,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:20:20,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:20:20,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:20:20,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:20:20,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:20:20,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:20:20,066 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:20:20,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:20:20,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:20:20,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:20:20,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:20:20,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:20:20,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:20:20,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:20:20,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:20:20,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:20:20,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:20:20,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:20:20,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:20:20,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:20:20,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:20:20,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:20:20,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:20:20,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:20:20,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:20:20,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:20:20,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:20:20,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:20:20,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:20:20,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:20:20,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:20:20,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:20:20,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:20:20,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:20:20,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:20:20,119 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:20:20,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:20:20,119 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:20:20,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:20:20,120 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:20:20,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:20:20,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:20:20,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:20:20,121 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:20:20,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:20:20,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:20:20,121 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:20:20,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:20:20,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:20:20,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:20:20,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:20:20,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:20:20,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:20:20,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:20:20,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:20:20,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:20:20,125 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:20:20,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:20:20,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:20:20,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:20:20,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:20:20,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:20:20,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:20:20,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:20:20,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:20:20,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:20:20,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:20:20,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:20:20,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:20:20,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:20:20,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:20:20,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:20:20,128 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-04-18 20:20:20,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:20:20,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:20:20,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:20:20,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:20:20,375 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:20:20,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2022-04-18 20:20:20,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/de1f107f8/a069db1a27764090896338ad63dc41f9/FLAG373d808cf [2022-04-18 20:20:20,794 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:20:20,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2022-04-18 20:20:20,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/de1f107f8/a069db1a27764090896338ad63dc41f9/FLAG373d808cf [2022-04-18 20:20:21,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/de1f107f8/a069db1a27764090896338ad63dc41f9 [2022-04-18 20:20:21,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:20:21,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:20:21,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:20:21,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:20:21,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:20:21,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667812c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21, skipping insertion in model container [2022-04-18 20:20:21,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:20:21,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:20:21,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-04-18 20:20:21,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:20:21,492 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:20:21,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-04-18 20:20:21,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:20:21,565 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:20:21,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21 WrapperNode [2022-04-18 20:20:21,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:20:21,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:20:21,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:20:21,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:20:21,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,641 INFO L137 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 1006 [2022-04-18 20:20:21,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:20:21,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:20:21,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:20:21,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:20:21,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:20:21,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:20:21,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:20:21,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:20:21,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (1/1) ... [2022-04-18 20:20:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:20:21,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:20:21,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 20:20:21,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 20:20:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:20:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:20:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:20:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:20:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 20:20:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 20:20:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 20:20:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 20:20:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 20:20:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 20:20:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-04-18 20:20:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-04-18 20:20:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:20:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 20:20:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 20:20:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 20:20:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:20:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:20:21,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:20:21,819 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 20:20:21,948 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:20:21,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:20:23,049 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:20:23,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:20:23,792 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-04-18 20:20:23,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:20:23 BoogieIcfgContainer [2022-04-18 20:20:23,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:20:23,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:20:23,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:20:23,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:20:23,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:20:21" (1/3) ... [2022-04-18 20:20:23,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40beb700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:20:23, skipping insertion in model container [2022-04-18 20:20:23,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:20:21" (2/3) ... [2022-04-18 20:20:23,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40beb700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:20:23, skipping insertion in model container [2022-04-18 20:20:23,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:20:23" (3/3) ... [2022-04-18 20:20:23,801 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-04-18 20:20:23,805 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:20:23,805 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:20:23,806 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 168 error locations. [2022-04-18 20:20:23,806 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:20:24,008 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 20:20:24,043 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:20:24,048 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 20:20:24,048 INFO L341 AbstractCegarLoop]: Starting to check reachability of 304 error locations. [2022-04-18 20:20:24,064 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:20:24,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 625 places, 637 transitions, 1306 flow [2022-04-18 20:20:24,076 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 625 places, 637 transitions, 1306 flow [2022-04-18 20:20:24,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 625 places, 637 transitions, 1306 flow [2022-04-18 20:20:24,282 INFO L129 PetriNetUnfolder]: 25/633 cut-off events. [2022-04-18 20:20:24,282 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 20:20:24,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 633 events. 25/633 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1134 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 545. Up to 2 conditions per place. [2022-04-18 20:20:24,307 INFO L116 LiptonReduction]: Number of co-enabled transitions 30864 [2022-04-18 20:21:00,650 INFO L131 LiptonReduction]: Checked pairs total: 106743 [2022-04-18 20:21:00,651 INFO L133 LiptonReduction]: Total number of compositions: 953 [2022-04-18 20:21:00,659 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 222 places, 217 transitions, 466 flow