./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:23:00,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:23:00,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:23:00,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:23:00,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:23:00,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:23:00,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:23:00,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:23:00,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:23:00,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:23:00,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:23:00,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:23:00,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:23:00,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:23:00,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:23:00,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:23:00,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:23:00,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:23:00,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:23:00,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:23:00,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:23:00,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:23:00,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:23:00,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:23:00,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:23:00,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:23:00,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:23:00,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:23:00,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:23:00,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:23:00,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:23:00,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:23:00,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:23:00,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:23:00,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:23:00,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:23:00,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:23:00,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:23:00,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:23:00,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:23:00,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:23:00,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:23:00,580 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:23:00,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:23:00,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:23:00,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:23:00,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:23:00,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:23:00,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:23:00,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:23:00,583 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:23:00,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:23:00,584 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:23:00,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:23:00,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:23:00,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:23:00,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:23:00,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:23:00,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:23:00,586 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:23:00,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:23:00,586 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:23:00,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:23:00,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:23:00,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:23:00,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:23:00,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:23:00,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:23:00,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:23:00,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:23:00,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:23:00,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:23:00,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:23:00,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:23:00,589 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:23:00,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:23:00,589 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:23:00,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:23:00,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:23:00,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:23:00,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:23:00,908 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:23:00,908 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:23:00,909 INFO L432 ainManager$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 23:23:02,085 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:23:02,423 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:23:02,425 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-30 23:23:02,456 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839d09227/b9ad45ddf9e74732bbbd97fbf1272db1/FLAGe645e4dd5 [2023-08-30 23:23:02,467 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839d09227/b9ad45ddf9e74732bbbd97fbf1272db1 [2023-08-30 23:23:02,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:23:02,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:23:02,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:23:02,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:23:02,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:23:02,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:23:02" (1/1) ... [2023-08-30 23:23:02,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ad26e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:02, skipping insertion in model container [2023-08-30 23:23:02,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:23:02" (1/1) ... [2023-08-30 23:23:02,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:23:02,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:23:02,668 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 23:23:03,077 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 23:23:03,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:23:03,153 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:23:03,164 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 23:23:03,204 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 23:23:03,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:23:03,369 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:23:03,370 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:23:03,370 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:23:03,376 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:23:03,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03 WrapperNode [2023-08-30 23:23:03,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:23:03,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:23:03,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:23:03,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:23:03,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,461 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2023-08-30 23:23:03,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:23:03,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:23:03,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:23:03,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:23:03,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:23:03,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:23:03,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:23:03,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:23:03,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (1/1) ... [2023-08-30 23:23:03,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:23:03,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:23:03,571 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 23:23:03,597 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 23:23:03,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:23:03,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:23:03,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:23:03,611 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 23:23:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 23:23:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:23:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:23:03,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:23:03,613 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 23:23:03,906 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:23:03,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:23:04,218 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:23:04,286 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:23:04,286 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:23:04,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:04 BoogieIcfgContainer [2023-08-30 23:23:04,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:23:04,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:23:04,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:23:04,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:23:04,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:23:02" (1/3) ... [2023-08-30 23:23:04,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b55124e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:23:04, skipping insertion in model container [2023-08-30 23:23:04,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:23:03" (2/3) ... [2023-08-30 23:23:04,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b55124e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:23:04, skipping insertion in model container [2023-08-30 23:23:04,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:04" (3/3) ... [2023-08-30 23:23:04,298 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-08-30 23:23:04,305 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:23:04,314 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:23:04,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 23:23:04,315 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:23:04,384 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:23:04,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 159 transitions, 334 flow [2023-08-30 23:23:04,529 INFO L130 PetriNetUnfolder]: 8/203 cut-off events. [2023-08-30 23:23:04,529 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:23:04,535 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 23:23:04,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 159 transitions, 334 flow [2023-08-30 23:23:04,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 306 flow [2023-08-30 23:23:04,548 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:23:04,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 306 flow [2023-08-30 23:23:04,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 306 flow [2023-08-30 23:23:04,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 306 flow [2023-08-30 23:23:04,623 INFO L130 PetriNetUnfolder]: 5/184 cut-off events. [2023-08-30 23:23:04,624 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:23:04,625 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 23:23:04,628 INFO L119 LiptonReduction]: Number of co-enabled transitions 2704 [2023-08-30 23:23:12,349 INFO L134 LiptonReduction]: Checked pairs total: 7350 [2023-08-30 23:23:12,349 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-30 23:23:12,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:23:12,371 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;@3cb04ee7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:23:12,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 23:23:12,378 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 23:23:12,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:23:12,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:12,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 23:23:12,398 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 23:23:12,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash 17980668, now seen corresponding path program 1 times [2023-08-30 23:23:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609946544] [2023-08-30 23:23:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:12,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:13,130 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 23:23:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609946544] [2023-08-30 23:23:13,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609946544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:13,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:13,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930997754] [2023-08-30 23:23:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:13,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:13,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:13,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 301 [2023-08-30 23:23:13,260 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 23:23:13,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:13,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 301 [2023-08-30 23:23:13,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:13,565 INFO L130 PetriNetUnfolder]: 822/1436 cut-off events. [2023-08-30 23:23:13,565 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 23:23:13,570 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 23:23:13,579 INFO L137 encePairwiseOnDemand]: 292/301 looper letters, 37 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-30 23:23:13,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 194 flow [2023-08-30 23:23:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-30 23:23:13,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673311184939092 [2023-08-30 23:23:13,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-30 23:23:13,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-30 23:23:13,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:13,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-30 23:23:13,614 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 23:23:13,621 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 23:23:13,622 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 23:23:13,624 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 422 transitions. [2023-08-30 23:23:13,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 194 flow [2023-08-30 23:23:13,631 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 23:23:13,633 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 124 flow [2023-08-30 23:23:13,634 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 23:23:13,639 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 23:23:13,640 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 124 flow [2023-08-30 23:23:13,641 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 23:23:13,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:13,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 23:23:13,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:23:13,645 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 23:23:13,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash 18006410, now seen corresponding path program 1 times [2023-08-30 23:23:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:13,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253494514] [2023-08-30 23:23:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:13,732 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 23:23:13,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253494514] [2023-08-30 23:23:13,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253494514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:13,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:13,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:13,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440558370] [2023-08-30 23:23:13,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:13,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:13,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:13,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 301 [2023-08-30 23:23:13,744 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 23:23:13,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:13,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 301 [2023-08-30 23:23:13,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:13,946 INFO L130 PetriNetUnfolder]: 634/1197 cut-off events. [2023-08-30 23:23:13,946 INFO L131 PetriNetUnfolder]: For 386/390 co-relation queries the response was YES. [2023-08-30 23:23:13,948 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 23:23:13,954 INFO L137 encePairwiseOnDemand]: 299/301 looper letters, 34 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 23:23:13,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 206 flow [2023-08-30 23:23:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-30 23:23:13,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49169435215946844 [2023-08-30 23:23:13,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-30 23:23:13,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-30 23:23:13,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:13,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-30 23:23:13,959 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 23:23:13,961 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 23:23:13,962 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 23:23:13,962 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 124 flow. Second operand 3 states and 444 transitions. [2023-08-30 23:23:13,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 206 flow [2023-08-30 23:23:13,965 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 23:23:13,966 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 115 flow [2023-08-30 23:23:13,966 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 23:23:13,967 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 23:23:13,967 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 115 flow [2023-08-30 23:23:13,968 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 23:23:13,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:13,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 23:23:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:23:13,969 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 23:23:13,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash 557401203, now seen corresponding path program 1 times [2023-08-30 23:23:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:13,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124166792] [2023-08-30 23:23:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:14,120 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 23:23:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:14,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124166792] [2023-08-30 23:23:14,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124166792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:14,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:14,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351356029] [2023-08-30 23:23:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:14,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:14,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:14,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 301 [2023-08-30 23:23:14,183 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 23:23:14,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:14,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 301 [2023-08-30 23:23:14,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:14,462 INFO L130 PetriNetUnfolder]: 1049/1809 cut-off events. [2023-08-30 23:23:14,463 INFO L131 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2023-08-30 23:23:14,465 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 23:23:14,472 INFO L137 encePairwiseOnDemand]: 294/301 looper letters, 43 selfloop transitions, 9 changer transitions 2/56 dead transitions. [2023-08-30 23:23:14,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 275 flow [2023-08-30 23:23:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-30 23:23:14,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46622369878183834 [2023-08-30 23:23:14,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-30 23:23:14,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-30 23:23:14,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:14,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-30 23:23:14,477 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 23:23:14,478 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 23:23:14,479 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 23:23:14,479 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 115 flow. Second operand 3 states and 421 transitions. [2023-08-30 23:23:14,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 275 flow [2023-08-30 23:23:14,480 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 23:23:14,481 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 183 flow [2023-08-30 23:23:14,482 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 23:23:14,483 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 23:23:14,485 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 183 flow [2023-08-30 23:23:14,486 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 23:23:14,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:14,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:14,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:23:14,487 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 23:23:14,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash 682194293, now seen corresponding path program 1 times [2023-08-30 23:23:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310494679] [2023-08-30 23:23:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:14,708 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 23:23:14,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:14,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310494679] [2023-08-30 23:23:14,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310494679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:14,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:14,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310714333] [2023-08-30 23:23:14,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:14,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:14,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:14,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:14,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:14,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-30 23:23:14,751 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 23:23:14,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:14,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-30 23:23:14,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:15,008 INFO L130 PetriNetUnfolder]: 1168/2049 cut-off events. [2023-08-30 23:23:15,008 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-08-30 23:23:15,011 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 23:23:15,021 INFO L137 encePairwiseOnDemand]: 293/301 looper letters, 51 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-08-30 23:23:15,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 346 flow [2023-08-30 23:23:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-30 23:23:15,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695459579180509 [2023-08-30 23:23:15,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-30 23:23:15,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-30 23:23:15,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:15,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-30 23:23:15,026 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 23:23:15,028 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 23:23:15,029 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 23:23:15,029 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 183 flow. Second operand 3 states and 424 transitions. [2023-08-30 23:23:15,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 346 flow [2023-08-30 23:23:15,033 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 23:23:15,034 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 242 flow [2023-08-30 23:23:15,035 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 23:23:15,035 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 23:23:15,036 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 242 flow [2023-08-30 23:23:15,036 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 23:23:15,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:15,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:15,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:23:15,037 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 23:23:15,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:15,037 INFO L85 PathProgramCache]: Analyzing trace with hash -326813030, now seen corresponding path program 1 times [2023-08-30 23:23:15,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:15,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353676932] [2023-08-30 23:23:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:15,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:23:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:15,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353676932] [2023-08-30 23:23:15,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353676932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:15,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:15,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:23:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385439973] [2023-08-30 23:23:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:15,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:15,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-30 23:23:15,222 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 23:23:15,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:15,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-30 23:23:15,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:15,535 INFO L130 PetriNetUnfolder]: 1459/2535 cut-off events. [2023-08-30 23:23:15,535 INFO L131 PetriNetUnfolder]: For 2737/2737 co-relation queries the response was YES. [2023-08-30 23:23:15,539 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 23:23:15,550 INFO L137 encePairwiseOnDemand]: 293/301 looper letters, 57 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2023-08-30 23:23:15,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 483 flow [2023-08-30 23:23:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-30 23:23:15,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706533776301218 [2023-08-30 23:23:15,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-30 23:23:15,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-30 23:23:15,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:15,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-30 23:23:15,554 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 23:23:15,556 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 23:23:15,557 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 23:23:15,557 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 242 flow. Second operand 3 states and 425 transitions. [2023-08-30 23:23:15,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 483 flow [2023-08-30 23:23:15,562 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 23:23:15,563 INFO L231 Difference]: Finished difference. Result has 46 places, 62 transitions, 336 flow [2023-08-30 23:23:15,563 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 23:23:15,563 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 23:23:15,563 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 62 transitions, 336 flow [2023-08-30 23:23:15,564 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 23:23:15,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:15,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:15,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:23:15,564 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 23:23:15,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1671702265, now seen corresponding path program 1 times [2023-08-30 23:23:15,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:15,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411323371] [2023-08-30 23:23:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:15,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:23:15,645 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 23:23:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:23:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411323371] [2023-08-30 23:23:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411323371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:23:15,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:23:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:23:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953333481] [2023-08-30 23:23:15,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:23:15,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:23:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:23:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:23:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:23:15,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 301 [2023-08-30 23:23:15,659 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 23:23:15,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:23:15,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 301 [2023-08-30 23:23:15,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:23:15,844 INFO L130 PetriNetUnfolder]: 786/1444 cut-off events. [2023-08-30 23:23:15,844 INFO L131 PetriNetUnfolder]: For 2148/2210 co-relation queries the response was YES. [2023-08-30 23:23:15,847 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 23:23:15,854 INFO L137 encePairwiseOnDemand]: 299/301 looper letters, 40 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 23:23:15,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 354 flow [2023-08-30 23:23:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:23:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:23:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-30 23:23:15,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48726467331118495 [2023-08-30 23:23:15,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-30 23:23:15,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-30 23:23:15,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:23:15,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-30 23:23:15,858 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 23:23:15,860 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 23:23:15,861 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 23:23:15,861 INFO L175 Difference]: Start difference. First operand has 46 places, 62 transitions, 336 flow. Second operand 3 states and 440 transitions. [2023-08-30 23:23:15,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 354 flow [2023-08-30 23:23:15,869 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 23:23:15,871 INFO L231 Difference]: Finished difference. Result has 37 places, 44 transitions, 186 flow [2023-08-30 23:23:15,871 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 23:23:15,874 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-30 23:23:15,874 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 44 transitions, 186 flow [2023-08-30 23:23:15,875 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 23:23:15,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:23:15,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:23:15,876 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 23:23:15,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:23:15,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1672564077, now seen corresponding path program 1 times [2023-08-30 23:23:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:23:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382322582] [2023-08-30 23:23:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:23:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:23:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:23:15,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:23:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:23:16,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:23:16,004 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:23:16,005 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-30 23:23:16,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-30 23:23:16,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-30 23:23:16,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-30 23:23:16,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-30 23:23:16,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-30 23:23:16,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-30 23:23:16,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-30 23:23:16,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:23:16,008 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:23:16,012 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:23:16,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:23:16,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:23:16 BasicIcfg [2023-08-30 23:23:16,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:23:16,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:23:16,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:23:16,042 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:23:16,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:23:04" (3/4) ... [2023-08-30 23:23:16,044 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:23:16,104 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:23:16,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:23:16,105 INFO L158 Benchmark]: Toolchain (without parser) took 13634.89ms. Allocated memory was 73.4MB in the beginning and 199.2MB in the end (delta: 125.8MB). Free memory was 44.3MB in the beginning and 82.9MB in the end (delta: -38.7MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,105 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 51.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:23:16,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 905.14ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 45.7MB in the end (delta: -1.6MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.57ms. Allocated memory is still 73.4MB. Free memory was 45.7MB in the beginning and 42.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,106 INFO L158 Benchmark]: Boogie Preprocessor took 66.87ms. Allocated memory is still 73.4MB. Free memory was 42.3MB in the beginning and 39.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,107 INFO L158 Benchmark]: RCFGBuilder took 759.02ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 39.4MB in the beginning and 55.6MB in the end (delta: -16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,107 INFO L158 Benchmark]: TraceAbstraction took 11749.58ms. Allocated memory was 100.7MB in the beginning and 199.2MB in the end (delta: 98.6MB). Free memory was 55.0MB in the beginning and 87.1MB in the end (delta: -32.1MB). Peak memory consumption was 66.5MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,107 INFO L158 Benchmark]: Witness Printer took 63.33ms. Allocated memory is still 199.2MB. Free memory was 87.1MB in the beginning and 82.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:23:16,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 51.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 905.14ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 45.7MB in the end (delta: -1.6MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.57ms. Allocated memory is still 73.4MB. Free memory was 45.7MB in the beginning and 42.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.87ms. Allocated memory is still 73.4MB. Free memory was 42.3MB in the beginning and 39.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 759.02ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 39.4MB in the beginning and 55.6MB in the end (delta: -16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11749.58ms. Allocated memory was 100.7MB in the beginning and 199.2MB in the end (delta: 98.6MB). Free memory was 55.0MB in the beginning and 87.1MB in the end (delta: -32.1MB). Peak memory consumption was 66.5MB. Max. memory is 16.1GB. * Witness Printer took 63.33ms. Allocated memory is still 199.2MB. Free memory was 87.1MB in the beginning and 82.9MB 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: 7.8s, 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: 11.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s 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, 0.2s SatisfiabilityAnalysisTime, 1.0s 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 23:23:16,146 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