./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:59:48,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:59:48,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:59:48,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:59:48,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:59:48,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:59:48,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:59:48,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:59:48,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:59:48,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:59:48,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:59:48,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:59:48,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:59:48,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:59:48,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:59:48,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:59:48,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:59:48,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:59:48,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:59:48,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:59:48,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:59:48,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:59:48,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:59:48,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:59:48,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:59:48,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:59:48,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:59:48,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:59:48,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:59:48,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:59:48,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:59:48,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:59:48,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:59:48,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:59:48,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:59:48,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:59:48,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:59:48,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:59:48,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:59:48,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:59:48,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:59:48,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:59:49,015 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:59:49,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:59:49,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:59:49,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:59:49,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:59:49,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:59:49,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:59:49,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:59:49,027 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:59:49,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:59:49,028 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:59:49,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:59:49,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:59:49,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:59:49,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:59:49,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:59:49,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:59:49,030 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:59:49,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:59:49,030 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:59:49,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:59:49,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:59:49,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:59:49,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:59:49,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:49,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:59:49,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:59:49,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:59:49,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:59:49,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:59:49,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:59:49,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:59:49,033 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:59:49,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:59:49,034 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:59:49,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62a6a6ca02e763ce9adebe2a1f0301f133cb0abc0bbd9fb473585b57a9c78f2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:59:49,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:59:49,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:59:49,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:59:49,380 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:59:49,381 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:59:49,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-09-01 09:59:50,677 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:59:51,053 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:59:51,054 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2023-09-01 09:59:51,078 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba446cf9/83b5f137b15b4dc19bb621b15a2eaa8c/FLAG9ed6c5e95 [2023-09-01 09:59:51,261 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba446cf9/83b5f137b15b4dc19bb621b15a2eaa8c [2023-09-01 09:59:51,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:59:51,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:59:51,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:51,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:59:51,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:59:51,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4999cf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:51, skipping insertion in model container [2023-09-01 09:59:51,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:59:51" (1/1) ... [2023-09-01 09:59:51,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:59:51,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:59:51,474 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 09:59:51,874 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i[75002,75015] [2023-09-01 09:59:51,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:51,918 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:59:51,930 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 09:59:51,969 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i[75002,75015] [2023-09-01 09:59:51,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:59:52,078 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:52,078 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:52,079 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:59:52,085 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:59:52,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52 WrapperNode [2023-09-01 09:59:52,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:59:52,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:52,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:59:52,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:59:52,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,153 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-09-01 09:59:52,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:59:52,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:59:52,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:59:52,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:59:52,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:59:52,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:59:52,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:59:52,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:59:52,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (1/1) ... [2023-09-01 09:59:52,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:59:52,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:59:52,221 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) [2023-09-01 09:59:52,227 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 [2023-09-01 09:59:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:59:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:59:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:59:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-09-01 09:59:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:59:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:59:52,260 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:59:52,568 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:59:52,570 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:59:52,815 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:59:52,901 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:59:52,906 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:59:52,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:52 BoogieIcfgContainer [2023-09-01 09:59:52,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:59:52,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:59:52,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:59:52,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:59:52,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:59:51" (1/3) ... [2023-09-01 09:59:52,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c3c132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:52, skipping insertion in model container [2023-09-01 09:59:52,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:59:52" (2/3) ... [2023-09-01 09:59:52,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c3c132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:59:52, skipping insertion in model container [2023-09-01 09:59:52,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:52" (3/3) ... [2023-09-01 09:59:52,917 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2023-09-01 09:59:52,924 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:59:52,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:59:52,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 09:59:52,933 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:59:53,002 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 09:59:53,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 334 flow [2023-09-01 09:59:53,128 INFO L130 PetriNetUnfolder]: 8/197 cut-off events. [2023-09-01 09:59:53,128 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:59:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 8/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 345 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-09-01 09:59:53,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 334 flow [2023-09-01 09:59:53,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 306 flow [2023-09-01 09:59:53,140 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:59:53,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 306 flow [2023-09-01 09:59:53,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 306 flow [2023-09-01 09:59:53,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 306 flow [2023-09-01 09:59:53,203 INFO L130 PetriNetUnfolder]: 5/178 cut-off events. [2023-09-01 09:59:53,203 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:59:53,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 5/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-09-01 09:59:53,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-09-01 10:00:00,809 INFO L134 LiptonReduction]: Checked pairs total: 6218 [2023-09-01 10:00:00,809 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-09-01 10:00:00,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:00:00,826 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;@654780f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:00:00,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-09-01 10:00:00,832 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-09-01 10:00:00,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:00:00,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:00,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 10:00:00,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:00,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash 560885401, now seen corresponding path program 1 times [2023-09-01 10:00:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619017033] [2023-09-01 10:00:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619017033] [2023-09-01 10:00:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619017033] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592899234] [2023-09-01 10:00:01,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:01,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:01,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 303 [2023-09-01 10:00:01,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-09-01 10:00:01,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:01,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 303 [2023-09-01 10:00:01,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:01,904 INFO L130 PetriNetUnfolder]: 612/1068 cut-off events. [2023-09-01 10:00:01,905 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 10:00:01,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1068 events. 612/1068 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4914 event pairs, 367 based on Foata normal form. 37/984 useless extension candidates. Maximal degree in co-relation 1936. Up to 843 conditions per place. [2023-09-01 10:00:01,917 INFO L137 encePairwiseOnDemand]: 295/303 looper letters, 40 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-09-01 10:00:01,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 198 flow [2023-09-01 10:00:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-09-01 10:00:01,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46644664466446645 [2023-09-01 10:00:01,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-09-01 10:00:01,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-09-01 10:00:01,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:01,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-09-01 10:00:01,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-09-01 10:00:01,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:01,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:01,972 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 424 transitions. [2023-09-01 10:00:01,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 198 flow [2023-09-01 10:00:01,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 10:00:01,977 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 110 flow [2023-09-01 10:00:01,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-09-01 10:00:01,982 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-09-01 10:00:01,982 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 110 flow [2023-09-01 10:00:01,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-09-01 10:00:01,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:01,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 10:00:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:00:01,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:01,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 18093115, now seen corresponding path program 1 times [2023-09-01 10:00:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63484839] [2023-09-01 10:00:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63484839] [2023-09-01 10:00:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63484839] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:02,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:02,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:02,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837059476] [2023-09-01 10:00:02,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:02,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 303 [2023-09-01 10:00:02,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2023-09-01 10:00:02,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:02,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 303 [2023-09-01 10:00:02,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:02,439 INFO L130 PetriNetUnfolder]: 660/1188 cut-off events. [2023-09-01 10:00:02,439 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2023-09-01 10:00:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 1188 events. 660/1188 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6031 event pairs, 411 based on Foata normal form. 0/1073 useless extension candidates. Maximal degree in co-relation 1185. Up to 986 conditions per place. [2023-09-01 10:00:02,446 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 41 selfloop transitions, 9 changer transitions 2/54 dead transitions. [2023-09-01 10:00:02,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 264 flow [2023-09-01 10:00:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-09-01 10:00:02,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46204620462046203 [2023-09-01 10:00:02,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-09-01 10:00:02,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-09-01 10:00:02,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:02,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-09-01 10:00:02,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2023-09-01 10:00:02,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:02,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:02,453 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 110 flow. Second operand 3 states and 420 transitions. [2023-09-01 10:00:02,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 264 flow [2023-09-01 10:00:02,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:02,460 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 175 flow [2023-09-01 10:00:02,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-09-01 10:00:02,461 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-09-01 10:00:02,461 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 175 flow [2023-09-01 10:00:02,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2023-09-01 10:00:02,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:02,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:02,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:00:02,462 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)] === [2023-09-01 10:00:02,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1431952413, now seen corresponding path program 1 times [2023-09-01 10:00:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83032274] [2023-09-01 10:00:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83032274] [2023-09-01 10:00:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83032274] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:00:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197004582] [2023-09-01 10:00:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:02,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:02,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:02,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 303 [2023-09-01 10:00:02,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-09-01 10:00:02,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:02,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 303 [2023-09-01 10:00:02,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:02,686 INFO L130 PetriNetUnfolder]: 154/317 cut-off events. [2023-09-01 10:00:02,686 INFO L131 PetriNetUnfolder]: For 211/225 co-relation queries the response was YES. [2023-09-01 10:00:02,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 317 events. 154/317 cut-off events. For 211/225 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1190 event pairs, 100 based on Foata normal form. 51/355 useless extension candidates. Maximal degree in co-relation 744. Up to 207 conditions per place. [2023-09-01 10:00:02,688 INFO L137 encePairwiseOnDemand]: 300/303 looper letters, 30 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-09-01 10:00:02,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 164 flow [2023-09-01 10:00:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-09-01 10:00:02,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49174917491749176 [2023-09-01 10:00:02,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-09-01 10:00:02,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-09-01 10:00:02,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:02,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-09-01 10:00:02,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2023-09-01 10:00:02,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:02,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:02,694 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 175 flow. Second operand 3 states and 447 transitions. [2023-09-01 10:00:02,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 164 flow [2023-09-01 10:00:02,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 152 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 10:00:02,698 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 72 flow [2023-09-01 10:00:02,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-09-01 10:00:02,699 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2023-09-01 10:00:02,701 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 72 flow [2023-09-01 10:00:02,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-09-01 10:00:02,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:02,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:02,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:00:02,702 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)] === [2023-09-01 10:00:02,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1519042807, now seen corresponding path program 1 times [2023-09-01 10:00:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000011803] [2023-09-01 10:00:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:02,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:02,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:02,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000011803] [2023-09-01 10:00:02,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000011803] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:02,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:02,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782178465] [2023-09-01 10:00:02,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:02,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:02,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:03,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 303 [2023-09-01 10:00:03,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-09-01 10:00:03,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:03,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 303 [2023-09-01 10:00:03,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:03,110 INFO L130 PetriNetUnfolder]: 198/391 cut-off events. [2023-09-01 10:00:03,111 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-09-01 10:00:03,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 391 events. 198/391 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1355 event pairs, 167 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 942. Up to 339 conditions per place. [2023-09-01 10:00:03,115 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 31 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-09-01 10:00:03,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 173 flow [2023-09-01 10:00:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2023-09-01 10:00:03,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45764576457645767 [2023-09-01 10:00:03,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2023-09-01 10:00:03,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2023-09-01 10:00:03,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:03,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2023-09-01 10:00:03,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2023-09-01 10:00:03,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:03,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:03,125 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 72 flow. Second operand 3 states and 416 transitions. [2023-09-01 10:00:03,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 173 flow [2023-09-01 10:00:03,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:03,128 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 118 flow [2023-09-01 10:00:03,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-09-01 10:00:03,129 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-09-01 10:00:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 118 flow [2023-09-01 10:00:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2023-09-01 10:00:03,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:03,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:03,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:00:03,130 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)] === [2023-09-01 10:00:03,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -968661501, now seen corresponding path program 1 times [2023-09-01 10:00:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093213542] [2023-09-01 10:00:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:03,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:03,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093213542] [2023-09-01 10:00:03,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093213542] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:03,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:03,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:00:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331927124] [2023-09-01 10:00:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:00:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:00:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:00:03,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 303 [2023-09-01 10:00:03,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-09-01 10:00:03,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:03,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 303 [2023-09-01 10:00:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:03,451 INFO L130 PetriNetUnfolder]: 214/430 cut-off events. [2023-09-01 10:00:03,451 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-09-01 10:00:03,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 430 events. 214/430 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1532 event pairs, 176 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 1075. Up to 366 conditions per place. [2023-09-01 10:00:03,454 INFO L137 encePairwiseOnDemand]: 296/303 looper letters, 35 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2023-09-01 10:00:03,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 257 flow [2023-09-01 10:00:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:00:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:00:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-09-01 10:00:03,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45874587458745875 [2023-09-01 10:00:03,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-09-01 10:00:03,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-09-01 10:00:03,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:03,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-09-01 10:00:03,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-09-01 10:00:03,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:03,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-09-01 10:00:03,460 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 118 flow. Second operand 3 states and 417 transitions. [2023-09-01 10:00:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 257 flow [2023-09-01 10:00:03,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 231 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:03,462 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 176 flow [2023-09-01 10:00:03,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-09-01 10:00:03,463 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-09-01 10:00:03,464 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 176 flow [2023-09-01 10:00:03,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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) [2023-09-01 10:00:03,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:03,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:00:03,465 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)] === [2023-09-01 10:00:03,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1746930508, now seen corresponding path program 1 times [2023-09-01 10:00:03,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:03,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181653262] [2023-09-01 10:00:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:03,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:00:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:00:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:00:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181653262] [2023-09-01 10:00:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181653262] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:00:04,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:00:04,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:00:04,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170693294] [2023-09-01 10:00:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:00:04,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 10:00:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:00:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 10:00:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 10:00:04,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 303 [2023-09-01 10:00:04,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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) [2023-09-01 10:00:04,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:00:04,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 303 [2023-09-01 10:00:04,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:00:04,214 INFO L130 PetriNetUnfolder]: 179/406 cut-off events. [2023-09-01 10:00:04,215 INFO L131 PetriNetUnfolder]: For 191/194 co-relation queries the response was YES. [2023-09-01 10:00:04,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 406 events. 179/406 cut-off events. For 191/194 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1782 event pairs, 75 based on Foata normal form. 12/401 useless extension candidates. Maximal degree in co-relation 1021. Up to 208 conditions per place. [2023-09-01 10:00:04,217 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 42 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2023-09-01 10:00:04,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 313 flow [2023-09-01 10:00:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 10:00:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 10:00:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2023-09-01 10:00:04,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466006600660066 [2023-09-01 10:00:04,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2023-09-01 10:00:04,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2023-09-01 10:00:04,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:00:04,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2023-09-01 10:00:04,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 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) [2023-09-01 10:00:04,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 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) [2023-09-01 10:00:04,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 303.0) internal successors, (1818), 6 states have internal predecessors, (1818), 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) [2023-09-01 10:00:04,226 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 176 flow. Second operand 5 states and 706 transitions. [2023-09-01 10:00:04,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 313 flow [2023-09-01 10:00:04,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 293 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 10:00:04,229 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 191 flow [2023-09-01 10:00:04,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-09-01 10:00:04,230 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-09-01 10:00:04,230 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 191 flow [2023-09-01 10:00:04,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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) [2023-09-01 10:00:04,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:00:04,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:00:04,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:00:04,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-09-01 10:00:04,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:00:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1720295958, now seen corresponding path program 2 times [2023-09-01 10:00:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:00:04,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026095963] [2023-09-01 10:00:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:00:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:00:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:00:04,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:00:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:00:04,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:00:04,364 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:00:04,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-09-01 10:00:04,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-09-01 10:00:04,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-09-01 10:00:04,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-09-01 10:00:04,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-09-01 10:00:04,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-09-01 10:00:04,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-09-01 10:00:04,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-09-01 10:00:04,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:00:04,370 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-09-01 10:00:04,378 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 10:00:04,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 10:00:04,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 10:00:04 BasicIcfg [2023-09-01 10:00:04,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 10:00:04,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 10:00:04,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 10:00:04,436 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 10:00:04,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:59:52" (3/4) ... [2023-09-01 10:00:04,438 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 10:00:04,504 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 10:00:04,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 10:00:04,505 INFO L158 Benchmark]: Toolchain (without parser) took 13240.61ms. Allocated memory was 79.7MB in the beginning and 151.0MB in the end (delta: 71.3MB). Free memory was 53.5MB in the beginning and 50.9MB in the end (delta: 2.6MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,505 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:00:04,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 818.79ms. Allocated memory is still 79.7MB. Free memory was 53.3MB in the beginning and 41.5MB in the end (delta: 11.8MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.49ms. Allocated memory is still 79.7MB. Free memory was 41.5MB in the beginning and 38.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,506 INFO L158 Benchmark]: Boogie Preprocessor took 40.75ms. Allocated memory is still 79.7MB. Free memory was 38.0MB in the beginning and 35.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,506 INFO L158 Benchmark]: RCFGBuilder took 712.55ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 35.3MB in the beginning and 66.7MB in the end (delta: -31.5MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,507 INFO L158 Benchmark]: TraceAbstraction took 11525.00ms. Allocated memory was 96.5MB in the beginning and 151.0MB in the end (delta: 54.5MB). Free memory was 66.2MB in the beginning and 58.2MB in the end (delta: 8.0MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,507 INFO L158 Benchmark]: Witness Printer took 68.82ms. Allocated memory is still 151.0MB. Free memory was 58.2MB in the beginning and 50.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-09-01 10:00:04,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 818.79ms. Allocated memory is still 79.7MB. Free memory was 53.3MB in the beginning and 41.5MB in the end (delta: 11.8MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.49ms. Allocated memory is still 79.7MB. Free memory was 41.5MB in the beginning and 38.0MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.75ms. Allocated memory is still 79.7MB. Free memory was 38.0MB in the beginning and 35.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 712.55ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 35.3MB in the beginning and 66.7MB in the end (delta: -31.5MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11525.00ms. Allocated memory was 96.5MB in the beginning and 151.0MB in the end (delta: 54.5MB). Free memory was 66.2MB in the beginning and 58.2MB in the end (delta: 8.0MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * Witness Printer took 68.82ms. Allocated memory is still 151.0MB. Free memory was 58.2MB in the beginning and 50.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 149 PlacesBefore, 40 PlacesAfterwards, 147 TransitionsBefore, 36 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 144 TotalNumberOfCompositions, 6218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2661, independent: 2367, independent conditional: 0, independent unconditional: 2367, dependent: 294, dependent conditional: 0, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1334, independent: 1278, independent conditional: 0, independent unconditional: 1278, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2661, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 1334, unknown conditional: 0, unknown unconditional: 1334] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [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)=-5, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [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}] [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; [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [\result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-4, res=0, t1={3:0}, t2={4:0}] [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1722] 0 \read(t1) VAL [\read(t1)=-5, \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_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-5, \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}, pthread_mutex_lock (&data->lock)=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, pthread_mutex_lock (&data->lock)=0, status={5:0}, 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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 169 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: 11.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 654 IncrementalHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 71 mSDtfsCounter, 654 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=6, InterpolantAutomatonStates: 20, 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, 1.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2023-09-01 10:00:04,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE