./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:23:09,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:23:09,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:23:09,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:23:09,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:23:09,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:23:09,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:23:09,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:23:09,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:23:09,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:23:09,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:23:09,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:23:09,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:23:09,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:23:09,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:23:09,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:23:09,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:23:09,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:23:09,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:23:09,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:23:09,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:23:09,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:23:09,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:23:09,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:23:09,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:23:09,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:23:09,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:23:09,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:23:09,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:23:09,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:23:09,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:23:09,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:23:09,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:23:09,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:23:09,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:23:09,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:23:09,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:23:09,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:23:09,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:23:09,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:23:09,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:23:09,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:23:09,867 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:23:09,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:23:09,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:23:09,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:23:09,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:23:09,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:23:09,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:23:09,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:23:09,870 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:23:09,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:23:09,870 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:23:09,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:23:09,872 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:23:09,872 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:23:09,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:23:09,872 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:23:09,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:23:09,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:23:09,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:23:09,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:23:09,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:23:09,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:23:09,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:23:09,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:23:09,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:23:09,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:23:09,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:23:09,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:23:09,874 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:23:09,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:23:09,874 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:23:09,875 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:23:10,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:23:10,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:23:10,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:23:10,115 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:23:10,116 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:23:10,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-08-30 11:23:11,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:23:11,277 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:23:11,277 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-08-30 11:23:11,282 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584e5c718/227c658bbc4444e78b4a5a0f0b15def9/FLAG86baef0f4 [2023-08-30 11:23:11,298 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/584e5c718/227c658bbc4444e78b4a5a0f0b15def9 [2023-08-30 11:23:11,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:23:11,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:23:11,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:23:11,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:23:11,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:23:11,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608c1afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11, skipping insertion in model container [2023-08-30 11:23:11,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:23:11,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:23:11,449 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4400,4413] [2023-08-30 11:23:11,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:23:11,456 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:23:11,476 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4400,4413] [2023-08-30 11:23:11,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:23:11,482 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:23:11,482 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:23:11,486 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:23:11,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11 WrapperNode [2023-08-30 11:23:11,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:23:11,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:23:11,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:23:11,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:23:11,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,520 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 312 [2023-08-30 11:23:11,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:23:11,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:23:11,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:23:11,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:23:11,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:23:11,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:23:11,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:23:11,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:23:11,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (1/1) ... [2023-08-30 11:23:11,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:23:11,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:23:11,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:23:11,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:23:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:23:11,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:23:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:23:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:23:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:23:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:23:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:23:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:23:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:23:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:23:11,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:23:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:23:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:23:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 11:23:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 11:23:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 11:23:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 11:23:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:23:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:23:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:23:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:23:11,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:23:11,610 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:23:11,753 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:23:11,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:23:12,024 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:23:12,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:23:12,108 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 11:23:12,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:12 BoogieIcfgContainer [2023-08-30 11:23:12,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:23:12,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:23:12,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:23:12,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:23:12,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:23:11" (1/3) ... [2023-08-30 11:23:12,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66468b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:23:12, skipping insertion in model container [2023-08-30 11:23:12,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:11" (2/3) ... [2023-08-30 11:23:12,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66468b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:23:12, skipping insertion in model container [2023-08-30 11:23:12,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:12" (3/3) ... [2023-08-30 11:23:12,115 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-08-30 11:23:12,119 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:23:12,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:23:12,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-08-30 11:23:12,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:23:12,186 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-30 11:23:12,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 213 transitions, 474 flow [2023-08-30 11:23:12,285 INFO L130 PetriNetUnfolder]: 2/207 cut-off events. [2023-08-30 11:23:12,286 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 11:23:12,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 207 events. 2/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2023-08-30 11:23:12,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 213 transitions, 474 flow [2023-08-30 11:23:12,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 183 transitions, 399 flow [2023-08-30 11:23:12,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:23:12,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 183 transitions, 399 flow [2023-08-30 11:23:12,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 183 transitions, 399 flow [2023-08-30 11:23:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 183 transitions, 399 flow [2023-08-30 11:23:12,347 INFO L130 PetriNetUnfolder]: 1/183 cut-off events. [2023-08-30 11:23:12,348 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:23:12,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 183 events. 1/183 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 157 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 164. Up to 2 conditions per place. [2023-08-30 11:23:12,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 6226 [2023-08-30 11:23:17,762 INFO L134 LiptonReduction]: Checked pairs total: 39042 [2023-08-30 11:23:17,762 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-30 11:23:17,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:23:17,775 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26342828, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:23:17,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-30 11:23:17,778 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 11:23:17,778 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:23:17,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:23:17,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:23:17,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-30 11:23:17,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:23:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash 870796, now seen corresponding path program 1 times [2023-08-30 11:23:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:23:17,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019048509] [2023-08-30 11:23:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:23:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:23:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:23:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:23:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:23:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019048509] [2023-08-30 11:23:18,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019048509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:23:18,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:23:18,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:23:18,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774768869] [2023-08-30 11:23:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:23:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:23:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:23:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:23:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:23:18,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 329 [2023-08-30 11:23:18,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:18,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:23:18,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 329 [2023-08-30 11:23:18,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand