./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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_4-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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:59:53,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:59:53,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:59:53,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:59:53,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:59:53,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:59:53,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:59:53,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:59:53,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:59:53,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:59:53,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:59:53,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:59:53,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:59:53,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:59:53,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:59:53,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:59:53,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:59:53,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:59:53,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:59:53,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:59:53,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:59:53,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:59:53,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:59:53,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:59:53,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:59:53,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:59:53,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:59:53,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:59:53,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:59:53,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:59:53,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:59:53,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:59:53,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:59:53,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:59:53,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:59:53,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:59:53,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:59:53,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:59:53,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:59:53,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:59:53,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:59:53,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:59:53,561 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:59:53,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:59:53,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:59:53,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:59:53,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:59:53,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:59:53,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:59:53,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:59:53,565 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:59:53,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:59:53,566 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:59:53,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:59:53,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:59:53,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:59:53,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:59:53,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:59:53,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:59:53,567 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:59:53,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:59:53,568 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:59:53,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:59:53,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:59:53,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:59:53,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:59:53,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:53,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:59:53,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:59:53,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:59:53,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:59:53,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:59:53,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:59:53,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:59:53,570 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:59:53,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:59:53,571 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:59:53,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:59:53,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:59:53,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:59:53,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:59:53,872 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:59:53,872 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:59:53,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-30 16:59:55,088 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:59:55,415 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:59:55,416 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-30 16:59:55,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a674660/49a1e2d1897d4601b344aa808e8927b6/FLAG81279bfd8 [2023-08-30 16:59:55,455 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a674660/49a1e2d1897d4601b344aa808e8927b6 [2023-08-30 16:59:55,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:59:55,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:59:55,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:55,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:59:55,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:59:55,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:55" (1/1) ... [2023-08-30 16:59:55,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9715d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:55, skipping insertion in model container [2023-08-30 16:59:55,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:59:55" (1/1) ... [2023-08-30 16:59:55,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:59:55,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:59:55,651 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:59:56,048 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_4-container_of.i[75002,75015] [2023-08-30 16:59:56,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:56,116 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:59:56,138 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:59:56,188 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_4-container_of.i[75002,75015] [2023-08-30 16:59:56,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:59:56,332 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:56,333 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:56,333 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:59:56,338 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:59:56,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56 WrapperNode [2023-08-30 16:59:56,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:59:56,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:56,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:59:56,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:59:56,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,421 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-08-30 16:59:56,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:59:56,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:59:56,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:59:56,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:59:56,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:59:56,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:59:56,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:59:56,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:59:56,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (1/1) ... [2023-08-30 16:59:56,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:59:56,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:59:56,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:59:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:59:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:59:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:59:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:59:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 16:59:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:59:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 16:59:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:59:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:59:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 16:59:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 16:59:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:59:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:59:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:59:56,584 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:59:56,903 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:59:56,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:59:57,207 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:59:57,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:59:57,257 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:59:57,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:57 BoogieIcfgContainer [2023-08-30 16:59:57,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:59:57,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:59:57,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:59:57,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:59:57,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:59:55" (1/3) ... [2023-08-30 16:59:57,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162e35f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:57, skipping insertion in model container [2023-08-30 16:59:57,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:59:56" (2/3) ... [2023-08-30 16:59:57,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162e35f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:59:57, skipping insertion in model container [2023-08-30 16:59:57,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:57" (3/3) ... [2023-08-30 16:59:57,269 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-08-30 16:59:57,276 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:59:57,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:59:57,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 16:59:57,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:59:57,355 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 16:59:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 334 flow [2023-08-30 16:59:57,453 INFO L130 PetriNetUnfolder]: 8/203 cut-off events. [2023-08-30 16:59:57,454 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:59:57,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 8/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 392 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-30 16:59:57,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 334 flow [2023-08-30 16:59:57,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 306 flow [2023-08-30 16:59:57,466 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:59:57,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 306 flow [2023-08-30 16:59:57,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 306 flow [2023-08-30 16:59:57,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 306 flow [2023-08-30 16:59:57,512 INFO L130 PetriNetUnfolder]: 5/184 cut-off events. [2023-08-30 16:59:57,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:59:57,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 5/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 343 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-08-30 16:59:57,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 2704 [2023-08-30 17:00:04,889 INFO L134 LiptonReduction]: Checked pairs total: 7350 [2023-08-30 17:00:04,889 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-30 17:00:04,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:00:04,906 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;@43dad285, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:00:04,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 17:00:04,911 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 17:00:04,911 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:00:04,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:04,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 17:00:04,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:04,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash 17980668, now seen corresponding path program 1 times [2023-08-30 17:00:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:04,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761588599] [2023-08-30 17:00:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:05,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:05,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761588599] [2023-08-30 17:00:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761588599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:05,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615236171] [2023-08-30 17:00:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:05,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:05,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 301 [2023-08-30 17:00:05,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 126.0) 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) [2023-08-30 17:00:05,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:05,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 301 [2023-08-30 17:00:05,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:05,973 INFO L130 PetriNetUnfolder]: 822/1436 cut-off events. [2023-08-30 17:00:05,974 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 17:00:05,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1436 events. 822/1436 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7464 event pairs, 577 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 2748. Up to 1133 conditions per place. [2023-08-30 17:00:05,986 INFO L137 encePairwiseOnDemand]: 292/301 looper letters, 37 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-30 17:00:05,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 194 flow [2023-08-30 17:00:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-30 17:00:06,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673311184939092 [2023-08-30 17:00:06,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-30 17:00:06,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-30 17:00:06,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:06,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-30 17:00:06,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,027 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 422 transitions. [2023-08-30 17:00:06,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 194 flow [2023-08-30 17:00:06,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:06,035 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 124 flow [2023-08-30 17:00:06,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 17:00:06,041 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 17:00:06,042 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 124 flow [2023-08-30 17:00:06,043 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) [2023-08-30 17:00:06,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:06,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 17:00:06,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:00:06,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:06,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 18006410, now seen corresponding path program 1 times [2023-08-30 17:00:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775932653] [2023-08-30 17:00:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775932653] [2023-08-30 17:00:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775932653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:06,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083162165] [2023-08-30 17:00:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:06,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:06,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:06,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 301 [2023-08-30 17:00:06,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:06,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 301 [2023-08-30 17:00:06,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:06,363 INFO L130 PetriNetUnfolder]: 634/1197 cut-off events. [2023-08-30 17:00:06,363 INFO L131 PetriNetUnfolder]: For 386/390 co-relation queries the response was YES. [2023-08-30 17:00:06,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 1197 events. 634/1197 cut-off events. For 386/390 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6756 event pairs, 545 based on Foata normal form. 1/1103 useless extension candidates. Maximal degree in co-relation 1292. Up to 1024 conditions per place. [2023-08-30 17:00:06,371 INFO L137 encePairwiseOnDemand]: 299/301 looper letters, 34 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 17:00:06,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 206 flow [2023-08-30 17:00:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-30 17:00:06,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49169435215946844 [2023-08-30 17:00:06,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-30 17:00:06,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-30 17:00:06,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:06,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-30 17:00:06,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,379 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 124 flow. Second operand 3 states and 444 transitions. [2023-08-30 17:00:06,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 206 flow [2023-08-30 17:00:06,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:06,386 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 115 flow [2023-08-30 17:00:06,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-30 17:00:06,387 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 17:00:06,387 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 115 flow [2023-08-30 17:00:06,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:06,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 17:00:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:00:06,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:06,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash 557401203, now seen corresponding path program 1 times [2023-08-30 17:00:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489298568] [2023-08-30 17:00:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:06,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:06,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:06,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489298568] [2023-08-30 17:00:06,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489298568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:06,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547515832] [2023-08-30 17:00:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:06,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:06,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 301 [2023-08-30 17:00:06,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 115 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) [2023-08-30 17:00:06,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:06,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 301 [2023-08-30 17:00:06,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:06,946 INFO L130 PetriNetUnfolder]: 1049/1809 cut-off events. [2023-08-30 17:00:06,947 INFO L131 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2023-08-30 17:00:06,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 1809 events. 1049/1809 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9511 event pairs, 717 based on Foata normal form. 38/1710 useless extension candidates. Maximal degree in co-relation 4265. Up to 1460 conditions per place. [2023-08-30 17:00:06,956 INFO L137 encePairwiseOnDemand]: 294/301 looper letters, 43 selfloop transitions, 9 changer transitions 2/56 dead transitions. [2023-08-30 17:00:06,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 275 flow [2023-08-30 17:00:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-30 17:00:06,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46622369878183834 [2023-08-30 17:00:06,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-30 17:00:06,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-30 17:00:06,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:06,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-30 17:00:06,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:06,964 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 115 flow. Second operand 3 states and 421 transitions. [2023-08-30 17:00:06,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 275 flow [2023-08-30 17:00:06,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:00:06,966 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 183 flow [2023-08-30 17:00:06,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-08-30 17:00:06,968 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 17:00:06,970 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 183 flow [2023-08-30 17:00:06,971 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) [2023-08-30 17:00:06,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:06,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:06,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:00:06,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:06,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:06,972 INFO L85 PathProgramCache]: Analyzing trace with hash 682194293, now seen corresponding path program 1 times [2023-08-30 17:00:06,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:06,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457558040] [2023-08-30 17:00:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:06,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:07,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457558040] [2023-08-30 17:00:07,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457558040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:07,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:07,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595934347] [2023-08-30 17:00:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:07,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:07,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:07,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-30 17:00:07,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:07,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:07,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-30 17:00:07,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:07,485 INFO L130 PetriNetUnfolder]: 1168/2049 cut-off events. [2023-08-30 17:00:07,485 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-08-30 17:00:07,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 2049 events. 1168/2049 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11759 event pairs, 627 based on Foata normal form. 0/1884 useless extension candidates. Maximal degree in co-relation 3355. Up to 1646 conditions per place. [2023-08-30 17:00:07,496 INFO L137 encePairwiseOnDemand]: 293/301 looper letters, 51 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-08-30 17:00:07,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 346 flow [2023-08-30 17:00:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 17:00:07,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695459579180509 [2023-08-30 17:00:07,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 17:00:07,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 17:00:07,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:07,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 17:00:07,501 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) [2023-08-30 17:00:07,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:07,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:07,504 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 183 flow. Second operand 3 states and 424 transitions. [2023-08-30 17:00:07,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 346 flow [2023-08-30 17:00:07,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 335 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:07,512 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 242 flow [2023-08-30 17:00:07,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2023-08-30 17:00:07,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 17:00:07,514 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 242 flow [2023-08-30 17:00:07,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:07,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:07,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:00:07,515 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:07,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash -326813030, now seen corresponding path program 1 times [2023-08-30 17:00:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:07,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949887452] [2023-08-30 17:00:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949887452] [2023-08-30 17:00:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949887452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:07,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005875089] [2023-08-30 17:00:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:07,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:07,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-30 17:00:07,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:07,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:07,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-30 17:00:07,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:08,026 INFO L130 PetriNetUnfolder]: 1459/2535 cut-off events. [2023-08-30 17:00:08,027 INFO L131 PetriNetUnfolder]: For 2737/2737 co-relation queries the response was YES. [2023-08-30 17:00:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 2535 events. 1459/2535 cut-off events. For 2737/2737 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14617 event pairs, 767 based on Foata normal form. 0/2406 useless extension candidates. Maximal degree in co-relation 3419. Up to 1974 conditions per place. [2023-08-30 17:00:08,043 INFO L137 encePairwiseOnDemand]: 293/301 looper letters, 57 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2023-08-30 17:00:08,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 483 flow [2023-08-30 17:00:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-30 17:00:08,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706533776301218 [2023-08-30 17:00:08,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-30 17:00:08,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-30 17:00:08,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:08,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-30 17:00:08,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,049 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 242 flow. Second operand 3 states and 425 transitions. [2023-08-30 17:00:08,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 483 flow [2023-08-30 17:00:08,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 427 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:08,056 INFO L231 Difference]: Finished difference. Result has 46 places, 62 transitions, 336 flow [2023-08-30 17:00:08,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=46, PETRI_TRANSITIONS=62} [2023-08-30 17:00:08,058 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 17:00:08,058 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions, 336 flow [2023-08-30 17:00:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:08,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:08,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:00:08,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:08,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1671702265, now seen corresponding path program 1 times [2023-08-30 17:00:08,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:08,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542714624] [2023-08-30 17:00:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:08,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:08,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542714624] [2023-08-30 17:00:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542714624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:08,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:08,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516878844] [2023-08-30 17:00:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:08,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:08,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:08,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 301 [2023-08-30 17:00:08,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 62 transitions, 336 flow. Second operand has 3 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) [2023-08-30 17:00:08,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:08,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 301 [2023-08-30 17:00:08,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:08,341 INFO L130 PetriNetUnfolder]: 786/1444 cut-off events. [2023-08-30 17:00:08,341 INFO L131 PetriNetUnfolder]: For 2148/2210 co-relation queries the response was YES. [2023-08-30 17:00:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 1444 events. 786/1444 cut-off events. For 2148/2210 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8182 event pairs, 146 based on Foata normal form. 58/1414 useless extension candidates. Maximal degree in co-relation 901. Up to 1068 conditions per place. [2023-08-30 17:00:08,350 INFO L137 encePairwiseOnDemand]: 299/301 looper letters, 40 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 17:00:08,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 354 flow [2023-08-30 17:00:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-30 17:00:08,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48726467331118495 [2023-08-30 17:00:08,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-30 17:00:08,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-30 17:00:08,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:08,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-30 17:00:08,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:00:08,357 INFO L175 Difference]: Start difference. First operand has 46 places, 62 transitions, 336 flow. Second operand 3 states and 440 transitions. [2023-08-30 17:00:08,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 354 flow [2023-08-30 17:00:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 290 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:08,365 INFO L231 Difference]: Finished difference. Result has 37 places, 44 transitions, 186 flow [2023-08-30 17:00:08,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=37, PETRI_TRANSITIONS=44} [2023-08-30 17:00:08,366 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-30 17:00:08,366 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 44 transitions, 186 flow [2023-08-30 17:00:08,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 17:00:08,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:08,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:08,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:00:08,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-30 17:00:08,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1672564077, now seen corresponding path program 1 times [2023-08-30 17:00:08,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:08,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094642522] [2023-08-30 17:00:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:08,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:00:08,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 17:00:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 17:00:08,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 17:00:08,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 17:00:08,467 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-30 17:00:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-30 17:00:08,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-30 17:00:08,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-30 17:00:08,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-30 17:00:08,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-30 17:00:08,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 17:00:08,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 17:00:08,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:00:08,470 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:08,475 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:00:08,475 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:00:08,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:00:08 BasicIcfg [2023-08-30 17:00:08,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:00:08,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:00:08,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:00:08,504 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:00:08,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:59:57" (3/4) ... [2023-08-30 17:00:08,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 17:00:08,542 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:00:08,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:00:08,543 INFO L158 Benchmark]: Toolchain (without parser) took 13084.49ms. Allocated memory was 90.2MB in the beginning and 180.4MB in the end (delta: 90.2MB). Free memory was 65.1MB in the beginning and 98.4MB in the end (delta: -33.3MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,543 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:00:08,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 878.46ms. Allocated memory is still 90.2MB. Free memory was 64.8MB in the beginning and 57.0MB in the end (delta: 7.8MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.50ms. Allocated memory is still 90.2MB. Free memory was 57.0MB in the beginning and 53.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,544 INFO L158 Benchmark]: Boogie Preprocessor took 79.58ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 51.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,544 INFO L158 Benchmark]: RCFGBuilder took 755.55ms. Allocated memory is still 90.2MB. Free memory was 50.7MB in the beginning and 48.8MB in the end (delta: 1.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,545 INFO L158 Benchmark]: TraceAbstraction took 11242.18ms. Allocated memory was 90.2MB in the beginning and 180.4MB in the end (delta: 90.2MB). Free memory was 47.9MB in the beginning and 102.6MB in the end (delta: -54.7MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,545 INFO L158 Benchmark]: Witness Printer took 39.23ms. Allocated memory is still 180.4MB. Free memory was 102.6MB in the beginning and 98.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 17:00:08,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 878.46ms. Allocated memory is still 90.2MB. Free memory was 64.8MB in the beginning and 57.0MB in the end (delta: 7.8MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.50ms. Allocated memory is still 90.2MB. Free memory was 57.0MB in the beginning and 53.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.58ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 51.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 755.55ms. Allocated memory is still 90.2MB. Free memory was 50.7MB in the beginning and 48.8MB in the end (delta: 1.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11242.18ms. Allocated memory was 90.2MB in the beginning and 180.4MB in the end (delta: 90.2MB). Free memory was 47.9MB in the beginning and 102.6MB in the end (delta: -54.7MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. * Witness Printer took 39.23ms. Allocated memory is still 180.4MB. Free memory was 102.6MB in the beginning and 98.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 149 PlacesBefore, 40 PlacesAfterwards, 147 TransitionsBefore, 36 TransitionsAfterwards, 2704 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 18 ConcurrentYvCompositions, 2 ChoiceCompositions, 142 TotalNumberOfCompositions, 7350 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2806, independent: 2511, independent conditional: 0, independent unconditional: 2511, dependent: 295, dependent conditional: 0, dependent unconditional: 295, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1400, independent: 1345, independent conditional: 0, independent unconditional: 1345, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2806, independent: 1166, independent conditional: 0, independent unconditional: 1166, dependent: 240, dependent conditional: 0, dependent unconditional: 240, unknown: 1400, unknown conditional: 0, unknown unconditional: 1400] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, 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={5:24}, d={5:24}, data={5:0}, data={5:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=0, 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) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, d={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=1, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [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; [L1723] 0 data->shared.a = 3 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, pthread_mutex_lock (&data->lock)=0, status={7:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, data={5:0}, data={5:0}, dev={5:24}, status={7:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={5:24}, arg={5:24}, arg={5:24}, data={5:0}, dev={5:24}, expression=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: 11.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 547 IncrementalHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 547 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 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! [2023-08-30 17:00:08,568 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