./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.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-bad-counter-queue2.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 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:19:54,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:19:54,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:19:54,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:19:54,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:19:54,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:19:54,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:19:54,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:19:54,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:19:54,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:19:54,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:19:54,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:19:54,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:19:54,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:19:54,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:19:54,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:19:54,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:19:54,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:19:54,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:19:54,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:19:54,515 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:19:54,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:19:54,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:19:54,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:19:54,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:19:54,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:19:54,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:19:54,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:19:54,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:19:54,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:19:54,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:19:54,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:19:54,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:19:54,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:19:54,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:19:54,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:19:54,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:19:54,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:19:54,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:19:54,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:19:54,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:19:54,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:19:54,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:19:54,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:19:54,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:19:54,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:19:54,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:19:54,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:19:54,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:19:54,566 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:19:54,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:19:54,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:19:54,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:19:54,567 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:19:54,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:19:54,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:19:54,568 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:19:54,568 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:19:54,568 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:19:54,568 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:19:54,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:19:54,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:19:54,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:19:54,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:19:54,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:19:54,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:19:54,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:19:54,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:19:54,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:19:54,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:19:54,571 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:19:54,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:19:54,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:19:54,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:19:54,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:19:54,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:19:54,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:19:54,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:19:54,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:19:54,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:19:54,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:19:54,573 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:19:54,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:19:54,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:19:54,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:19:54,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:19:54,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 [2022-04-18 20:19:54,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:19:54,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:19:54,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:19:54,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:19:54,813 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:19:54,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c [2022-04-18 20:19:54,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad42d1f0b/bbe85910fb0742cc8292d7bf4614fe2f/FLAG4d95d6fe5 [2022-04-18 20:19:55,284 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:19:55,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c [2022-04-18 20:19:55,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad42d1f0b/bbe85910fb0742cc8292d7bf4614fe2f/FLAG4d95d6fe5 [2022-04-18 20:19:55,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad42d1f0b/bbe85910fb0742cc8292d7bf4614fe2f [2022-04-18 20:19:55,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:19:55,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:19:55,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:19:55,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:19:55,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:19:55,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4615a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55, skipping insertion in model container [2022-04-18 20:19:55,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:19:55,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:19:55,523 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-bad-counter-queue2.wvr.c[2271,2284] [2022-04-18 20:19:55,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:19:55,539 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:19:55,577 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-bad-counter-queue2.wvr.c[2271,2284] [2022-04-18 20:19:55,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:19:55,611 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:19:55,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55 WrapperNode [2022-04-18 20:19:55,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:19:55,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:19:55,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:19:55,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:19:55,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,676 INFO L137 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 197 [2022-04-18 20:19:55,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:19:55,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:19:55,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:19:55,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:19:55,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:19:55,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:19:55,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:19:55,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:19:55,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (1/1) ... [2022-04-18 20:19:55,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:19:55,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:19:55,754 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 20:19:55,757 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 20:19:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:19:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:19:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:19:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:19:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 20:19:55,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 20:19:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 20:19:55,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 20:19:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:19:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 20:19:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 20:19:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 20:19:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:19:55,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:19:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:19:55,786 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 20:19:55,899 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:19:55,901 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:19:56,281 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:19:56,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:19:56,429 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 20:19:56,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:19:56 BoogieIcfgContainer [2022-04-18 20:19:56,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:19:56,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:19:56,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:19:56,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:19:56,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:19:55" (1/3) ... [2022-04-18 20:19:56,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f562a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:19:56, skipping insertion in model container [2022-04-18 20:19:56,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:19:55" (2/3) ... [2022-04-18 20:19:56,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f562a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:19:56, skipping insertion in model container [2022-04-18 20:19:56,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:19:56" (3/3) ... [2022-04-18 20:19:56,440 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2022-04-18 20:19:56,449 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:19:56,449 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:19:56,449 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-04-18 20:19:56,449 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:19:56,525 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 20:19:56,601 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:19:56,609 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 20:19:56,609 INFO L341 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-04-18 20:19:56,625 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:19:56,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 166 transitions, 348 flow [2022-04-18 20:19:56,639 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 166 transitions, 348 flow [2022-04-18 20:19:56,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 166 transitions, 348 flow [2022-04-18 20:19:56,698 INFO L129 PetriNetUnfolder]: 9/164 cut-off events. [2022-04-18 20:19:56,702 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 20:19:56,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 9/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2022-04-18 20:19:56,711 INFO L116 LiptonReduction]: Number of co-enabled transitions 1700 [2022-04-18 20:20:02,818 INFO L131 LiptonReduction]: Checked pairs total: 3201 [2022-04-18 20:20:02,818 INFO L133 LiptonReduction]: Total number of compositions: 189 [2022-04-18 20:20:02,825 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 40 transitions, 96 flow [2022-04-18 20:20:02,857 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 297 states, 215 states have (on average 3.7534883720930234) internal successors, (807), 296 states have internal predecessors, (807), 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) [2022-04-18 20:20:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 215 states have (on average 3.7534883720930234) internal successors, (807), 296 states have internal predecessors, (807), 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) [2022-04-18 20:20:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 20:20:02,863 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:20:02,864 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 20:20:02,864 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-04-18 20:20:02,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:20:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash 822, now seen corresponding path program 1 times [2022-04-18 20:20:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:20:02,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131107602] [2022-04-18 20:20:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:20:02,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:20:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:20:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:20:02,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:20:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131107602] [2022-04-18 20:20:02,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131107602] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:20:02,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:20:02,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 20:20:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001938181] [2022-04-18 20:20:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:20:02,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 20:20:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:20:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 20:20:02,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:20:02,972 INFO L87 Difference]: Start difference. First operand has 297 states, 215 states have (on average 3.7534883720930234) internal successors, (807), 296 states have internal predecessors, (807), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-04-18 20:20:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:20:03,017 INFO L93 Difference]: Finished difference Result 52 states and 117 transitions. [2022-04-18 20:20:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 20:20:03,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-04-18 20:20:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:20:03,024 INFO L225 Difference]: With dead ends: 52 [2022-04-18 20:20:03,024 INFO L226 Difference]: Without dead ends: 0 [2022-04-18 20:20:03,025 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:20:03,029 INFO L913 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 20:20:03,030 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 20:20:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-18 20:20:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-18 20:20:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-04-18 20:20:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-18 20:20:03,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1 [2022-04-18 20:20:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:20:03,050 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-18 20:20:03,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-04-18 20:20:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-18 20:20:03,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-18 20:20:03,053 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (28 of 29 remaining) [2022-04-18 20:20:03,053 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-04-18 20:20:03,054 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-04-18 20:20:03,054 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-04-18 20:20:03,054 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-04-18 20:20:03,054 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-04-18 20:20:03,054 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-04-18 20:20:03,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-04-18 20:20:03,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-04-18 20:20:03,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-04-18 20:20:03,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-04-18 20:20:03,056 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-04-18 20:20:03,056 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-04-18 20:20:03,056 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-04-18 20:20:03,056 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-04-18 20:20:03,057 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-04-18 20:20:03,057 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-04-18 20:20:03,057 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 29 remaining) [2022-04-18 20:20:03,057 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 29 remaining) [2022-04-18 20:20:03,058 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-04-18 20:20:03,058 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-04-18 20:20:03,058 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-04-18 20:20:03,058 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-04-18 20:20:03,058 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-04-18 20:20:03,059 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-04-18 20:20:03,059 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-04-18 20:20:03,059 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-04-18 20:20:03,059 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-04-18 20:20:03,060 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-04-18 20:20:03,060 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 20:20:03,062 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 20:20:03,065 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 20:20:03,065 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 20:20:03,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:20:03 BasicIcfg [2022-04-18 20:20:03,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 20:20:03,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 20:20:03,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 20:20:03,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 20:20:03,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:19:56" (3/4) ... [2022-04-18 20:20:03,071 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-04-18 20:20:03,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-04-18 20:20:03,076 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-04-18 20:20:03,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-04-18 20:20:03,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-04-18 20:20:03,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-04-18 20:20:03,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-04-18 20:20:03,121 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2022-04-18 20:20:03,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 20:20:03,122 INFO L158 Benchmark]: Toolchain (without parser) took 7816.37ms. Allocated memory was 98.6MB in the beginning and 153.1MB in the end (delta: 54.5MB). Free memory was 68.0MB in the beginning and 67.1MB in the end (delta: 920.9kB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,123 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 20:20:03,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.39ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 67.6MB in the beginning and 94.4MB in the end (delta: -26.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.46ms. Allocated memory is still 121.6MB. Free memory was 94.4MB in the beginning and 92.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,124 INFO L158 Benchmark]: Boogie Preprocessor took 40.51ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 90.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,124 INFO L158 Benchmark]: RCFGBuilder took 712.43ms. Allocated memory is still 121.6MB. Free memory was 90.2MB in the beginning and 57.5MB in the end (delta: 32.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,125 INFO L158 Benchmark]: TraceAbstraction took 6635.30ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 57.1MB in the beginning and 70.3MB in the end (delta: -13.2MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,125 INFO L158 Benchmark]: Witness Printer took 53.06ms. Allocated memory is still 153.1MB. Free memory was 70.3MB in the beginning and 67.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:20:03,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.39ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 67.6MB in the beginning and 94.4MB in the end (delta: -26.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.46ms. Allocated memory is still 121.6MB. Free memory was 94.4MB in the beginning and 92.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.51ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 90.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 712.43ms. Allocated memory is still 121.6MB. Free memory was 90.2MB in the beginning and 57.5MB in the end (delta: 32.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6635.30ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 57.1MB in the beginning and 70.3MB in the end (delta: -13.2MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Witness Printer took 53.06ms. Allocated memory is still 153.1MB. Free memory was 70.3MB in the beginning and 67.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 164 PlacesBefore, 42 PlacesAfterwards, 166 TransitionsBefore, 40 TransitionsAfterwards, 1700 CoEnabledTransitionPairs, 8 FixpointIterations, 108 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 189 TotalNumberOfCompositions, 3201 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2375, positive: 2291, positive conditional: 0, positive unconditional: 2291, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1197, positive: 1179, positive conditional: 0, positive unconditional: 1179, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1197, positive: 1047, positive conditional: 0, positive unconditional: 1047, negative: 150, negative conditional: 0, negative unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 150, positive: 132, positive conditional: 0, positive unconditional: 132, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 385, positive: 254, positive conditional: 0, positive unconditional: 254, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2375, positive: 1112, positive conditional: 0, positive unconditional: 1112, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 1197, unknown conditional: 0, unknown unconditional: 1197] , Statistics on independence cache: Total cache size (in pairs): 143, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 59]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 71]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 72]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 72]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 92]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 78]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 80]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 192 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-18 20:20:03,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE