./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_5-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-2_5-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:51:07,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:51:07,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:51:07,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:51:07,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:51:07,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:51:07,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:51:07,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:51:07,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:51:07,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:51:07,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:51:07,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:51:07,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:51:07,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:51:07,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:51:07,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:51:07,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:51:07,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:51:07,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:51:07,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:51:07,661 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:51:07,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:51:07,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:51:07,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:51:07,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:51:07,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:51:07,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:51:07,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:51:07,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:51:07,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:51:07,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:51:07,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:51:07,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:51:07,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:51:07,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:51:07,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:51:07,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:51:07,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:51:07,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:51:07,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:51:07,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:51:07,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:51:07,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:51:07,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:51:07,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:51:07,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:51:07,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:51:07,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:51:07,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:51:07,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:51:07,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:51:07,706 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:51:07,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:51:07,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:51:07,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:51:07,708 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:51:07,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:51:07,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:51:07,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:51:07,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:51:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:51:07,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:51:07,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:51:07,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 [2022-07-13 21:51:07,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:51:07,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:51:07,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:51:07,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:51:07,934 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:51:07,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2022-07-13 21:51:07,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e787a63f/a83af4d20686410ebd815618e7db0be1/FLAG56fc6a0b8 [2022-07-13 21:51:08,461 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:51:08,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2022-07-13 21:51:08,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e787a63f/a83af4d20686410ebd815618e7db0be1/FLAG56fc6a0b8 [2022-07-13 21:51:08,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e787a63f/a83af4d20686410ebd815618e7db0be1 [2022-07-13 21:51:08,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:51:08,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:51:08,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:51:08,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:51:08,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:51:08,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:51:08" (1/1) ... [2022-07-13 21:51:08,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bdf6a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:08, skipping insertion in model container [2022-07-13 21:51:08,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:51:08" (1/1) ... [2022-07-13 21:51:08,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:51:09,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:51:09,177 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-13 21:51:09,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_5-container_of.i[75002,75015] [2022-07-13 21:51:09,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:51:09,577 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:51:09,589 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-13 21:51:09,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_5-container_of.i[75002,75015] [2022-07-13 21:51:09,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:51:09,741 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:51:09,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09 WrapperNode [2022-07-13 21:51:09,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:51:09,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:51:09,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:51:09,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:51:09,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,823 INFO L137 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 143 [2022-07-13 21:51:09,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:51:09,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:51:09,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:51:09,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:51:09,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:51:09,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:51:09,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:51:09,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:51:09,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (1/1) ... [2022-07-13 21:51:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:51:09,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:51:09,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:51:09,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:51:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:51:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:51:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:51:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:51:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-07-13 21:51:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:51:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:51:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:51:09,978 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:51:10,260 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:51:10,261 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:51:10,466 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:51:10,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:51:10,502 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:51:10,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:51:10 BoogieIcfgContainer [2022-07-13 21:51:10,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:51:10,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:51:10,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:51:10,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:51:10,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:51:08" (1/3) ... [2022-07-13 21:51:10,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ce2caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:51:10, skipping insertion in model container [2022-07-13 21:51:10,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:09" (2/3) ... [2022-07-13 21:51:10,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ce2caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:51:10, skipping insertion in model container [2022-07-13 21:51:10,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:51:10" (3/3) ... [2022-07-13 21:51:10,510 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2022-07-13 21:51:10,514 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:51:10,521 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:51:10,521 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 21:51:10,521 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:51:10,558 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 21:51:10,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 175 transitions, 366 flow [2022-07-13 21:51:10,652 INFO L129 PetriNetUnfolder]: 8/220 cut-off events. [2022-07-13 21:51:10,654 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:51:10,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 8/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 377 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-07-13 21:51:10,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 175 transitions, 366 flow [2022-07-13 21:51:10,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 161 transitions, 334 flow [2022-07-13 21:51:10,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:51:10,679 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79c3ce8c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7593a862 [2022-07-13 21:51:10,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-13 21:51:10,691 INFO L129 PetriNetUnfolder]: 1/110 cut-off events. [2022-07-13 21:51:10,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:51:10,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:10,692 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:10,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:51:10,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1773378929, now seen corresponding path program 1 times [2022-07-13 21:51:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197317940] [2022-07-13 21:51:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:11,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197317940] [2022-07-13 21:51:11,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197317940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:11,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:11,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:51:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293643478] [2022-07-13 21:51:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:51:11,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:51:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:51:11,108 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 175 [2022-07-13 21:51:11,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 161 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:11,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:11,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 175 [2022-07-13 21:51:11,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:11,671 INFO L129 PetriNetUnfolder]: 850/2034 cut-off events. [2022-07-13 21:51:11,672 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-13 21:51:11,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3561 conditions, 2034 events. 850/2034 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13476 event pairs, 196 based on Foata normal form. 17/1998 useless extension candidates. Maximal degree in co-relation 3253. Up to 615 conditions per place. [2022-07-13 21:51:11,683 INFO L132 encePairwiseOnDemand]: 151/175 looper letters, 100 selfloop transitions, 48 changer transitions 0/245 dead transitions. [2022-07-13 21:51:11,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 245 transitions, 798 flow [2022-07-13 21:51:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:51:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:51:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1637 transitions. [2022-07-13 21:51:11,697 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6681632653061225 [2022-07-13 21:51:11,697 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1637 transitions. [2022-07-13 21:51:11,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1637 transitions. [2022-07-13 21:51:11,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:11,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1637 transitions. [2022-07-13 21:51:11,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 116.92857142857143) internal successors, (1637), 14 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:11,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 175.0) internal successors, (2625), 15 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:11,715 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 175.0) internal successors, (2625), 15 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:11,716 INFO L186 Difference]: Start difference. First operand has 163 places, 161 transitions, 334 flow. Second operand 14 states and 1637 transitions. [2022-07-13 21:51:11,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 245 transitions, 798 flow [2022-07-13 21:51:11,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 245 transitions, 790 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 21:51:11,724 INFO L242 Difference]: Finished difference. Result has 177 places, 194 transitions, 615 flow [2022-07-13 21:51:11,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=615, PETRI_PLACES=177, PETRI_TRANSITIONS=194} [2022-07-13 21:51:11,729 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, 14 predicate places. [2022-07-13 21:51:11,729 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 194 transitions, 615 flow [2022-07-13 21:51:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:11,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:11,730 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:11,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:51:11,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:51:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash -238227831, now seen corresponding path program 1 times [2022-07-13 21:51:11,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:11,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064068955] [2022-07-13 21:51:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:11,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:11,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:11,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064068955] [2022-07-13 21:51:11,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064068955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:11,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:11,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:51:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100585108] [2022-07-13 21:51:11,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:51:11,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:51:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:51:11,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 175 [2022-07-13 21:51:11,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 194 transitions, 615 flow. Second operand has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:11,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:11,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 175 [2022-07-13 21:51:11,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:12,361 INFO L129 PetriNetUnfolder]: 1104/2643 cut-off events. [2022-07-13 21:51:12,361 INFO L130 PetriNetUnfolder]: For 10776/10838 co-relation queries the response was YES. [2022-07-13 21:51:12,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9141 conditions, 2643 events. 1104/2643 cut-off events. For 10776/10838 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19169 event pairs, 258 based on Foata normal form. 47/2662 useless extension candidates. Maximal degree in co-relation 8135. Up to 858 conditions per place. [2022-07-13 21:51:12,379 INFO L132 encePairwiseOnDemand]: 156/175 looper letters, 75 selfloop transitions, 44 changer transitions 72/287 dead transitions. [2022-07-13 21:51:12,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 287 transitions, 1736 flow [2022-07-13 21:51:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:51:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 21:51:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1406 transitions. [2022-07-13 21:51:12,413 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6695238095238095 [2022-07-13 21:51:12,413 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1406 transitions. [2022-07-13 21:51:12,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1406 transitions. [2022-07-13 21:51:12,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:12,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1406 transitions. [2022-07-13 21:51:12,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 175.0) internal successors, (2275), 13 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,420 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 175.0) internal successors, (2275), 13 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,420 INFO L186 Difference]: Start difference. First operand has 177 places, 194 transitions, 615 flow. Second operand 12 states and 1406 transitions. [2022-07-13 21:51:12,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 287 transitions, 1736 flow [2022-07-13 21:51:12,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 287 transitions, 1736 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 21:51:12,430 INFO L242 Difference]: Finished difference. Result has 196 places, 197 transitions, 923 flow [2022-07-13 21:51:12,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=923, PETRI_PLACES=196, PETRI_TRANSITIONS=197} [2022-07-13 21:51:12,431 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, 33 predicate places. [2022-07-13 21:51:12,432 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 197 transitions, 923 flow [2022-07-13 21:51:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:12,432 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:12,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:51:12,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:51:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 74396295, now seen corresponding path program 1 times [2022-07-13 21:51:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:12,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637099599] [2022-07-13 21:51:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:12,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:12,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:12,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637099599] [2022-07-13 21:51:12,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637099599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:12,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:12,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:12,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117175623] [2022-07-13 21:51:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:12,520 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 175 [2022-07-13 21:51:12,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 197 transitions, 923 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:12,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 175 [2022-07-13 21:51:12,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:12,587 INFO L129 PetriNetUnfolder]: 59/340 cut-off events. [2022-07-13 21:51:12,587 INFO L130 PetriNetUnfolder]: For 959/1059 co-relation queries the response was YES. [2022-07-13 21:51:12,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 340 events. 59/340 cut-off events. For 959/1059 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1301 event pairs, 14 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 795. Up to 54 conditions per place. [2022-07-13 21:51:12,590 INFO L132 encePairwiseOnDemand]: 170/175 looper letters, 23 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2022-07-13 21:51:12,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 136 transitions, 447 flow [2022-07-13 21:51:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:51:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:51:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 904 transitions. [2022-07-13 21:51:12,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8609523809523809 [2022-07-13 21:51:12,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 904 transitions. [2022-07-13 21:51:12,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 904 transitions. [2022-07-13 21:51:12,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:12,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 904 transitions. [2022-07-13 21:51:12,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,596 INFO L186 Difference]: Start difference. First operand has 196 places, 197 transitions, 923 flow. Second operand 6 states and 904 transitions. [2022-07-13 21:51:12,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 136 transitions, 447 flow [2022-07-13 21:51:12,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 136 transitions, 338 flow, removed 40 selfloop flow, removed 17 redundant places. [2022-07-13 21:51:12,600 INFO L242 Difference]: Finished difference. Result has 141 places, 128 transitions, 276 flow [2022-07-13 21:51:12,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2022-07-13 21:51:12,601 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, -22 predicate places. [2022-07-13 21:51:12,601 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 276 flow [2022-07-13 21:51:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,601 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:12,601 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:12,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:51:12,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:51:12,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1976380995, now seen corresponding path program 1 times [2022-07-13 21:51:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:12,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728074720] [2022-07-13 21:51:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:12,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:12,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728074720] [2022-07-13 21:51:12,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728074720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:12,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:12,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:51:12,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878445788] [2022-07-13 21:51:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:12,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:51:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:51:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:51:12,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 175 [2022-07-13 21:51:12,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:12,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 175 [2022-07-13 21:51:12,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:12,805 INFO L129 PetriNetUnfolder]: 123/446 cut-off events. [2022-07-13 21:51:12,805 INFO L130 PetriNetUnfolder]: For 65/68 co-relation queries the response was YES. [2022-07-13 21:51:12,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 446 events. 123/446 cut-off events. For 65/68 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1784 event pairs, 94 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 810. Up to 227 conditions per place. [2022-07-13 21:51:12,808 INFO L132 encePairwiseOnDemand]: 169/175 looper letters, 37 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2022-07-13 21:51:12,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 385 flow [2022-07-13 21:51:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:51:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:51:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2022-07-13 21:51:12,809 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8304761904761905 [2022-07-13 21:51:12,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2022-07-13 21:51:12,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2022-07-13 21:51:12,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:12,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2022-07-13 21:51:12,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,812 INFO L186 Difference]: Start difference. First operand has 141 places, 128 transitions, 276 flow. Second operand 3 states and 436 transitions. [2022-07-13 21:51:12,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 385 flow [2022-07-13 21:51:12,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 378 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 21:51:12,814 INFO L242 Difference]: Finished difference. Result has 141 places, 132 transitions, 311 flow [2022-07-13 21:51:12,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=141, PETRI_TRANSITIONS=132} [2022-07-13 21:51:12,815 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, -22 predicate places. [2022-07-13 21:51:12,815 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 132 transitions, 311 flow [2022-07-13 21:51:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:12,816 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:12,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:51:12,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:51:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash 219140614, now seen corresponding path program 1 times [2022-07-13 21:51:12,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:12,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065843537] [2022-07-13 21:51:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:12,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:12,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065843537] [2022-07-13 21:51:12,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065843537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:12,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:12,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:51:12,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866747651] [2022-07-13 21:51:12,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:12,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:51:12,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:51:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:51:12,880 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 175 [2022-07-13 21:51:12,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 132 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:12,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 175 [2022-07-13 21:51:12,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:12,966 INFO L129 PetriNetUnfolder]: 130/465 cut-off events. [2022-07-13 21:51:12,966 INFO L130 PetriNetUnfolder]: For 206/212 co-relation queries the response was YES. [2022-07-13 21:51:12,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 465 events. 130/465 cut-off events. For 206/212 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1890 event pairs, 98 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 954. Up to 239 conditions per place. [2022-07-13 21:51:12,969 INFO L132 encePairwiseOnDemand]: 169/175 looper letters, 39 selfloop transitions, 7 changer transitions 0/142 dead transitions. [2022-07-13 21:51:12,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 142 transitions, 448 flow [2022-07-13 21:51:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:51:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:51:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-07-13 21:51:12,970 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-07-13 21:51:12,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-07-13 21:51:12,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-07-13 21:51:12,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:12,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-07-13 21:51:12,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,973 INFO L186 Difference]: Start difference. First operand has 141 places, 132 transitions, 311 flow. Second operand 3 states and 435 transitions. [2022-07-13 21:51:12,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 142 transitions, 448 flow [2022-07-13 21:51:12,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 142 transitions, 424 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-13 21:51:12,976 INFO L242 Difference]: Finished difference. Result has 143 places, 137 transitions, 357 flow [2022-07-13 21:51:12,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2022-07-13 21:51:12,977 INFO L279 CegarLoopForPetriNet]: 163 programPoint places, -20 predicate places. [2022-07-13 21:51:12,977 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 357 flow [2022-07-13 21:51:12,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:51:12,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:12,978 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:12,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:51:12,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:51:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1168566715, now seen corresponding path program 1 times [2022-07-13 21:51:12,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:12,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062469728] [2022-07-13 21:51:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:51:13,041 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:51:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:51:13,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:51:13,106 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:51:13,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-07-13 21:51:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-07-13 21:51:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-07-13 21:51:13,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-07-13 21:51:13,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-07-13 21:51:13,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-07-13 21:51:13,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-07-13 21:51:13,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-07-13 21:51:13,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:51:13,110 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 21:51:13,113 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:51:13,113 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:51:13,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:51:13 BasicIcfg [2022-07-13 21:51:13,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:51:13,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:51:13,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:51:13,168 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:51:13,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:51:10" (3/4) ... [2022-07-13 21:51:13,170 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 21:51:13,219 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:51:13,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:51:13,219 INFO L158 Benchmark]: Toolchain (without parser) took 4254.44ms. Allocated memory was 81.8MB in the beginning and 197.1MB in the end (delta: 115.3MB). Free memory was 59.4MB in the beginning and 56.1MB in the end (delta: 3.3MB). Peak memory consumption was 117.7MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,220 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:51:13,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 776.09ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 59.2MB in the beginning and 61.2MB in the end (delta: -2.0MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.55ms. Allocated memory is still 109.1MB. Free memory was 61.2MB in the beginning and 57.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,220 INFO L158 Benchmark]: Boogie Preprocessor took 68.96ms. Allocated memory is still 109.1MB. Free memory was 57.5MB in the beginning and 54.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,221 INFO L158 Benchmark]: RCFGBuilder took 610.01ms. Allocated memory is still 109.1MB. Free memory was 54.9MB in the beginning and 63.2MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,221 INFO L158 Benchmark]: TraceAbstraction took 2662.20ms. Allocated memory was 109.1MB in the beginning and 197.1MB in the end (delta: 88.1MB). Free memory was 62.5MB in the beginning and 73.9MB in the end (delta: -11.4MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,221 INFO L158 Benchmark]: Witness Printer took 50.83ms. Allocated memory is still 197.1MB. Free memory was 73.9MB in the beginning and 56.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 21:51:13,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 776.09ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 59.2MB in the beginning and 61.2MB in the end (delta: -2.0MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.55ms. Allocated memory is still 109.1MB. Free memory was 61.2MB in the beginning and 57.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.96ms. Allocated memory is still 109.1MB. Free memory was 57.5MB in the beginning and 54.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 610.01ms. Allocated memory is still 109.1MB. Free memory was 54.9MB in the beginning and 63.2MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2662.20ms. Allocated memory was 109.1MB in the beginning and 197.1MB in the end (delta: 88.1MB). Free memory was 62.5MB in the beginning and 73.9MB in the end (delta: -11.4MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. * Witness Printer took 50.83ms. Allocated memory is still 197.1MB. Free memory was 73.9MB in the beginning and 56.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; VAL [t1={3:0}, t2={4:0}] [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; VAL [\result=0, t1={3:0}, t2={4:0}] [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); VAL [my_drv_init()=0, ret=0, t1={3:0}, t2={4:0}] [L1746] COND TRUE 0 ret==0 VAL [ret=0, t1={3:0}, t2={4:0}] [L1747] 0 int probe_ret; VAL [ret=0, t1={3:0}, t2={4:0}] [L1748] 0 struct my_data data; VAL [data={6:0}, ret=0, t1={3:0}, t2={4:0}] [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; VAL [d={6:24}, data={6:0}, data={6:0}, t1={3:0}, t2={4:0}] [L1708] 0 data->shared.a = 0 VAL [d={6:24}, data={6:0}, data={6:0}, t1={3:0}, t2={4:0}] [L1709] 0 data->shared.b = 0 VAL [d={6:24}, data={6:0}, data={6:0}, t1={3:0}, t2={4:0}] [L1710] 0 int res = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, d={6:24}, data={6:0}, data={6:0}, res=0, t1={3:0}, t2={4:0}] [L1711] COND FALSE 0 !(\read(res)) VAL [d={6:24}, data={6:0}, data={6:0}, res=0, t1={3:0}, t2={4:0}] [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=7, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; VAL [arg={6:24}, arg={6:24}, dev={6:24}, t1={3:0}, t2={4:0}] [L1690] 1 struct my_data *data; VAL [arg={6:24}, arg={6:24}, dev={6:24}, t1={3:0}, t2={4:0}] [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, dev={6:24}, t1={3:0}, t2={4:0}] [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=8, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; VAL [\result=0, __mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, res=0, t1={3:0}, t2={4:0}] [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, dev={6:24}, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1750] COND TRUE 0 probe_ret==0 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, dev={6:24}, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1751] CALL 0 my_drv_disconnect(&data) [L1697] EXPR 1 data->shared.b [L1697] 1 int lb = data->shared.b; [L1700] 1 data->shared.b = lb + 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1703] 1 return 0; VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1721] 0 void *status; VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1722] 0 \read(t1) VAL [\read(t1)=7, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=7, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1724] 0 data->shared.a = 3 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1689] 2 struct device *dev = (struct device*)arg; VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1690] 2 struct my_data *data; VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1694] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1727] 0 data->shared.b = 3 VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1730] EXPR 0 data->shared.a [L1730] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 185 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 389 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 338 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 135 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=923occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 378 ConstructedInterpolants, 0 QuantifiedInterpolants, 536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-13 21:51:13,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE