./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe001_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe001_tso.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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:08:56,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:08:56,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:08:56,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:08:56,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:08:56,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:08:56,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:08:56,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:08:56,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:08:56,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:08:56,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:08:56,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:08:56,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:08:56,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:08:56,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:08:56,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:08:56,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:08:56,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:08:56,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:08:56,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:08:56,441 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:08:56,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:08:56,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:08:56,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:08:56,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:08:56,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:08:56,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:08:56,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:08:56,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:08:56,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:08:56,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:08:56,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:08:56,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:08:56,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:08:56,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:08:56,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:08:56,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:08:56,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:08:56,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:08:56,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:08:56,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:08:56,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:08:56,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:08:56,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:08:56,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:08:56,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:08:56,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:08:56,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:08:56,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:08:56,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:08:56,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:08:56,482 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:08:56,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:08:56,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:08:56,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:08:56,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:08:56,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:08:56,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:08:56,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:08:56,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:08:56,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:08:56,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:08:56,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:08:56,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:08:56,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:08:56,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:08:56,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:08:56,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:56,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:08:56,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:08:56,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:08:56,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:08:56,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:08:56,487 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:08:56,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:08:56,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:08:56,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d [2022-07-12 10:08:56,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:08:56,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:08:56,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:08:56,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:08:56,710 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:08:56,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe001_tso.i [2022-07-12 10:08:56,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b663b0b4/45138780f86c48fb825f43348d11af40/FLAG733162aaa [2022-07-12 10:08:57,187 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:08:57,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i [2022-07-12 10:08:57,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b663b0b4/45138780f86c48fb825f43348d11af40/FLAG733162aaa [2022-07-12 10:08:57,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b663b0b4/45138780f86c48fb825f43348d11af40 [2022-07-12 10:08:57,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:08:57,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:08:57,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:57,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:08:57,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:08:57,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd11a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57, skipping insertion in model container [2022-07-12 10:08:57,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:08:57,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:08:57,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2022-07-12 10:08:57,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:57,583 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:08:57,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2022-07-12 10:08:57,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:08:57,642 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:08:57,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57 WrapperNode [2022-07-12 10:08:57,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:08:57,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:57,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:08:57,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:08:57,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,690 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-07-12 10:08:57,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:08:57,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:08:57,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:08:57,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:08:57,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:08:57,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:08:57,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:08:57,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:08:57,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (1/1) ... [2022-07-12 10:08:57,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:08:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:08:57,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:08:57,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:08:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:08:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:08:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:08:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:08:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:08:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:08:57,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:08:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:08:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:08:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:08:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:08:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:08:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:08:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:08:57,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:08:57,795 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:08:57,913 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:08:57,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:08:58,047 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:08:58,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:08:58,051 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:08:58,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:58 BoogieIcfgContainer [2022-07-12 10:08:58,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:08:58,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:08:58,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:08:58,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:08:58,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:08:57" (1/3) ... [2022-07-12 10:08:58,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce9f75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:58, skipping insertion in model container [2022-07-12 10:08:58,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:08:57" (2/3) ... [2022-07-12 10:08:58,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce9f75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:08:58, skipping insertion in model container [2022-07-12 10:08:58,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:58" (3/3) ... [2022-07-12 10:08:58,059 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2022-07-12 10:08:58,062 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:08:58,068 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:08:58,068 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:08:58,068 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:08:58,115 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:08:58,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-07-12 10:08:58,160 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-07-12 10:08:58,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:58,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-12 10:08:58,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-07-12 10:08:58,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-07-12 10:08:58,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:08:58,185 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ceac0df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@766f9fc9 [2022-07-12 10:08:58,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:08:58,216 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-07-12 10:08:58,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:08:58,217 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:58,218 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:58,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:08:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1258848663, now seen corresponding path program 1 times [2022-07-12 10:08:58,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:58,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411113671] [2022-07-12 10:08:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:58,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:58,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:58,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411113671] [2022-07-12 10:08:58,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411113671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:58,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:58,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:58,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973075290] [2022-07-12 10:08:58,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:58,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:58,673 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:08:58,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:58,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:58,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:08:58,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:58,975 INFO L129 PetriNetUnfolder]: 557/1266 cut-off events. [2022-07-12 10:08:58,975 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-12 10:08:58,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 1266 events. 557/1266 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7845 event pairs, 31 based on Foata normal form. 42/1263 useless extension candidates. Maximal degree in co-relation 2165. Up to 261 conditions per place. [2022-07-12 10:08:58,983 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 29 selfloop transitions, 7 changer transitions 56/146 dead transitions. [2022-07-12 10:08:58,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 497 flow [2022-07-12 10:08:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 982 transitions. [2022-07-12 10:08:58,994 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8300929839391378 [2022-07-12 10:08:58,995 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 982 transitions. [2022-07-12 10:08:58,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 982 transitions. [2022-07-12 10:08:58,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:58,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 982 transitions. [2022-07-12 10:08:59,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.53846153846153) internal successors, (982), 13 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,007 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,009 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 982 transitions. [2022-07-12 10:08:59,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 497 flow [2022-07-12 10:08:59,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:08:59,014 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 252 flow [2022-07-12 10:08:59,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-07-12 10:08:59,017 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-07-12 10:08:59,017 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 252 flow [2022-07-12 10:08:59,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:59,018 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:59,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:08:59,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:08:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1049210424, now seen corresponding path program 1 times [2022-07-12 10:08:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:59,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164906885] [2022-07-12 10:08:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:59,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:59,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164906885] [2022-07-12 10:08:59,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164906885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:59,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:59,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041837518] [2022-07-12 10:08:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:59,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:59,153 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:08:59,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:59,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:08:59,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:59,409 INFO L129 PetriNetUnfolder]: 338/848 cut-off events. [2022-07-12 10:08:59,409 INFO L130 PetriNetUnfolder]: For 2160/2845 co-relation queries the response was YES. [2022-07-12 10:08:59,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 848 events. 338/848 cut-off events. For 2160/2845 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4736 event pairs, 16 based on Foata normal form. 27/846 useless extension candidates. Maximal degree in co-relation 2928. Up to 239 conditions per place. [2022-07-12 10:08:59,415 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 27 selfloop transitions, 12 changer transitions 58/151 dead transitions. [2022-07-12 10:08:59,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1006 flow [2022-07-12 10:08:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2022-07-12 10:08:59,418 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8157227387996618 [2022-07-12 10:08:59,418 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2022-07-12 10:08:59,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2022-07-12 10:08:59,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:59,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2022-07-12 10:08:59,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,423 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,423 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 252 flow. Second operand 13 states and 965 transitions. [2022-07-12 10:08:59,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1006 flow [2022-07-12 10:08:59,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 151 transitions, 978 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-07-12 10:08:59,434 INFO L242 Difference]: Finished difference. Result has 115 places, 85 transitions, 397 flow [2022-07-12 10:08:59,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=397, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2022-07-12 10:08:59,435 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-07-12 10:08:59,436 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 397 flow [2022-07-12 10:08:59,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,436 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:59,436 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:59,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:08:59,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:08:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 714493961, now seen corresponding path program 1 times [2022-07-12 10:08:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:59,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060707144] [2022-07-12 10:08:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:59,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060707144] [2022-07-12 10:08:59,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060707144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:59,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:59,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:08:59,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304885292] [2022-07-12 10:08:59,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:59,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:08:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:08:59,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:08:59,567 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:08:59,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 397 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:59,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:08:59,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:08:59,756 INFO L129 PetriNetUnfolder]: 227/709 cut-off events. [2022-07-12 10:08:59,756 INFO L130 PetriNetUnfolder]: For 3350/3621 co-relation queries the response was YES. [2022-07-12 10:08:59,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 709 events. 227/709 cut-off events. For 3350/3621 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3969 event pairs, 3 based on Foata normal form. 21/711 useless extension candidates. Maximal degree in co-relation 2808. Up to 161 conditions per place. [2022-07-12 10:08:59,762 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 31 selfloop transitions, 22 changer transitions 43/150 dead transitions. [2022-07-12 10:08:59,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 150 transitions, 1250 flow [2022-07-12 10:08:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:08:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:08:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2022-07-12 10:08:59,764 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8174133558748944 [2022-07-12 10:08:59,764 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2022-07-12 10:08:59,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2022-07-12 10:08:59,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:08:59,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2022-07-12 10:08:59,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,768 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,768 INFO L186 Difference]: Start difference. First operand has 115 places, 85 transitions, 397 flow. Second operand 13 states and 967 transitions. [2022-07-12 10:08:59,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 150 transitions, 1250 flow [2022-07-12 10:08:59,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 150 transitions, 1172 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-12 10:08:59,777 INFO L242 Difference]: Finished difference. Result has 126 places, 97 transitions, 644 flow [2022-07-12 10:08:59,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=644, PETRI_PLACES=126, PETRI_TRANSITIONS=97} [2022-07-12 10:08:59,778 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2022-07-12 10:08:59,778 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 97 transitions, 644 flow [2022-07-12 10:08:59,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:08:59,779 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:08:59,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:08:59,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:08:59,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:08:59,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1363473321, now seen corresponding path program 1 times [2022-07-12 10:08:59,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:08:59,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714687987] [2022-07-12 10:08:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:08:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:08:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:08:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:08:59,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:08:59,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714687987] [2022-07-12 10:08:59,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714687987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:08:59,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:08:59,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:08:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809395154] [2022-07-12 10:08:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:08:59,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:08:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:08:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:08:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:08:59,885 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:08:59,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 97 transitions, 644 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:08:59,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:08:59,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:08:59,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:00,038 INFO L129 PetriNetUnfolder]: 157/550 cut-off events. [2022-07-12 10:09:00,038 INFO L130 PetriNetUnfolder]: For 3787/4434 co-relation queries the response was YES. [2022-07-12 10:09:00,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 550 events. 157/550 cut-off events. For 3787/4434 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2896 event pairs, 10 based on Foata normal form. 17/546 useless extension candidates. Maximal degree in co-relation 2503. Up to 137 conditions per place. [2022-07-12 10:09:00,042 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 31 selfloop transitions, 18 changer transitions 67/170 dead transitions. [2022-07-12 10:09:00,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 170 transitions, 1821 flow [2022-07-12 10:09:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:09:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:09:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 821 transitions. [2022-07-12 10:09:00,045 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8201798201798202 [2022-07-12 10:09:00,045 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 821 transitions. [2022-07-12 10:09:00,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 821 transitions. [2022-07-12 10:09:00,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:00,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 821 transitions. [2022-07-12 10:09:00,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.63636363636364) internal successors, (821), 11 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,048 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,048 INFO L186 Difference]: Start difference. First operand has 126 places, 97 transitions, 644 flow. Second operand 11 states and 821 transitions. [2022-07-12 10:09:00,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 170 transitions, 1821 flow [2022-07-12 10:09:00,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 170 transitions, 1707 flow, removed 57 selfloop flow, removed 12 redundant places. [2022-07-12 10:09:00,057 INFO L242 Difference]: Finished difference. Result has 123 places, 92 transitions, 630 flow [2022-07-12 10:09:00,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2022-07-12 10:09:00,058 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 40 predicate places. [2022-07-12 10:09:00,058 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 630 flow [2022-07-12 10:09:00,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:00,059 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:00,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:09:00,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:00,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1878774896, now seen corresponding path program 1 times [2022-07-12 10:09:00,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:00,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785930169] [2022-07-12 10:09:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:00,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:00,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:00,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785930169] [2022-07-12 10:09:00,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785930169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:00,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:00,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:00,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659430895] [2022-07-12 10:09:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:00,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:00,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-12 10:09:00,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:00,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-12 10:09:00,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:00,273 INFO L129 PetriNetUnfolder]: 57/353 cut-off events. [2022-07-12 10:09:00,274 INFO L130 PetriNetUnfolder]: For 2313/2592 co-relation queries the response was YES. [2022-07-12 10:09:00,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 353 events. 57/353 cut-off events. For 2313/2592 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1845 event pairs, 0 based on Foata normal form. 11/357 useless extension candidates. Maximal degree in co-relation 1403. Up to 65 conditions per place. [2022-07-12 10:09:00,276 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 33 selfloop transitions, 17 changer transitions 23/127 dead transitions. [2022-07-12 10:09:00,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 127 transitions, 1179 flow [2022-07-12 10:09:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:09:00,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:09:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 943 transitions. [2022-07-12 10:09:00,278 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7971259509721048 [2022-07-12 10:09:00,279 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 943 transitions. [2022-07-12 10:09:00,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 943 transitions. [2022-07-12 10:09:00,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:00,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 943 transitions. [2022-07-12 10:09:00,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,289 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,289 INFO L186 Difference]: Start difference. First operand has 123 places, 92 transitions, 630 flow. Second operand 13 states and 943 transitions. [2022-07-12 10:09:00,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 127 transitions, 1179 flow [2022-07-12 10:09:00,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 127 transitions, 1088 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-07-12 10:09:00,295 INFO L242 Difference]: Finished difference. Result has 135 places, 93 transitions, 699 flow [2022-07-12 10:09:00,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=699, PETRI_PLACES=135, PETRI_TRANSITIONS=93} [2022-07-12 10:09:00,296 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 52 predicate places. [2022-07-12 10:09:00,296 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 93 transitions, 699 flow [2022-07-12 10:09:00,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,297 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:00,297 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:00,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:09:00,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1439644304, now seen corresponding path program 1 times [2022-07-12 10:09:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:00,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274543594] [2022-07-12 10:09:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:00,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:00,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274543594] [2022-07-12 10:09:00,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274543594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:00,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:00,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:00,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833815568] [2022-07-12 10:09:00,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:00,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:00,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:00,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:00,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:00,357 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-07-12 10:09:00,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 93 transitions, 699 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:00,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-07-12 10:09:00,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:00,449 INFO L129 PetriNetUnfolder]: 26/236 cut-off events. [2022-07-12 10:09:00,449 INFO L130 PetriNetUnfolder]: For 1989/2209 co-relation queries the response was YES. [2022-07-12 10:09:00,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 236 events. 26/236 cut-off events. For 1989/2209 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1063 event pairs, 3 based on Foata normal form. 23/252 useless extension candidates. Maximal degree in co-relation 993. Up to 41 conditions per place. [2022-07-12 10:09:00,451 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 16 selfloop transitions, 5 changer transitions 28/110 dead transitions. [2022-07-12 10:09:00,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 110 transitions, 1072 flow [2022-07-12 10:09:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:09:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:09:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2022-07-12 10:09:00,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2022-07-12 10:09:00,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 533 transitions. [2022-07-12 10:09:00,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 533 transitions. [2022-07-12 10:09:00,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:00,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 533 transitions. [2022-07-12 10:09:00,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,455 INFO L186 Difference]: Start difference. First operand has 135 places, 93 transitions, 699 flow. Second operand 7 states and 533 transitions. [2022-07-12 10:09:00,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 110 transitions, 1072 flow [2022-07-12 10:09:00,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 110 transitions, 988 flow, removed 42 selfloop flow, removed 7 redundant places. [2022-07-12 10:09:00,461 INFO L242 Difference]: Finished difference. Result has 129 places, 81 transitions, 434 flow [2022-07-12 10:09:00,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=129, PETRI_TRANSITIONS=81} [2022-07-12 10:09:00,462 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 46 predicate places. [2022-07-12 10:09:00,462 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 81 transitions, 434 flow [2022-07-12 10:09:00,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:00,463 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:00,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:09:00,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1556929320, now seen corresponding path program 1 times [2022-07-12 10:09:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:00,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895271317] [2022-07-12 10:09:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:00,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:00,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:00,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895271317] [2022-07-12 10:09:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895271317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:00,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:00,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950533545] [2022-07-12 10:09:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:00,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:00,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:00,524 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2022-07-12 10:09:00,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 81 transitions, 434 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:00,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2022-07-12 10:09:00,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:00,590 INFO L129 PetriNetUnfolder]: 5/125 cut-off events. [2022-07-12 10:09:00,590 INFO L130 PetriNetUnfolder]: For 538/623 co-relation queries the response was YES. [2022-07-12 10:09:00,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 125 events. 5/125 cut-off events. For 538/623 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 315 event pairs, 0 based on Foata normal form. 9/132 useless extension candidates. Maximal degree in co-relation 392. Up to 14 conditions per place. [2022-07-12 10:09:00,591 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 2 changer transitions 15/88 dead transitions. [2022-07-12 10:09:00,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 88 transitions, 548 flow [2022-07-12 10:09:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:09:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:09:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 601 transitions. [2022-07-12 10:09:00,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8255494505494505 [2022-07-12 10:09:00,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 601 transitions. [2022-07-12 10:09:00,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 601 transitions. [2022-07-12 10:09:00,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:00,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 601 transitions. [2022-07-12 10:09:00,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.125) internal successors, (601), 8 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,596 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,596 INFO L186 Difference]: Start difference. First operand has 129 places, 81 transitions, 434 flow. Second operand 8 states and 601 transitions. [2022-07-12 10:09:00,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 88 transitions, 548 flow [2022-07-12 10:09:00,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 88 transitions, 427 flow, removed 41 selfloop flow, removed 21 redundant places. [2022-07-12 10:09:00,599 INFO L242 Difference]: Finished difference. Result has 116 places, 72 transitions, 247 flow [2022-07-12 10:09:00,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=116, PETRI_TRANSITIONS=72} [2022-07-12 10:09:00,600 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2022-07-12 10:09:00,600 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 72 transitions, 247 flow [2022-07-12 10:09:00,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,600 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:00,601 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:00,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:09:00,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:00,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:00,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1425138734, now seen corresponding path program 2 times [2022-07-12 10:09:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:00,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020137311] [2022-07-12 10:09:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:00,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020137311] [2022-07-12 10:09:00,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020137311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:00,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:00,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:00,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316990477] [2022-07-12 10:09:00,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:00,653 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-12 10:09:00,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 72 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:00,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-12 10:09:00,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:00,735 INFO L129 PetriNetUnfolder]: 94/317 cut-off events. [2022-07-12 10:09:00,736 INFO L130 PetriNetUnfolder]: For 133/135 co-relation queries the response was YES. [2022-07-12 10:09:00,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 317 events. 94/317 cut-off events. For 133/135 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1490 event pairs, 14 based on Foata normal form. 8/319 useless extension candidates. Maximal degree in co-relation 590. Up to 86 conditions per place. [2022-07-12 10:09:00,737 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 13 selfloop transitions, 5 changer transitions 21/98 dead transitions. [2022-07-12 10:09:00,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 98 transitions, 379 flow [2022-07-12 10:09:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-07-12 10:09:00,739 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-07-12 10:09:00,739 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-07-12 10:09:00,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-07-12 10:09:00,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:00,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-07-12 10:09:00,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,742 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,742 INFO L186 Difference]: Start difference. First operand has 116 places, 72 transitions, 247 flow. Second operand 9 states and 707 transitions. [2022-07-12 10:09:00,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 98 transitions, 379 flow [2022-07-12 10:09:00,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 308 flow, removed 11 selfloop flow, removed 18 redundant places. [2022-07-12 10:09:00,744 INFO L242 Difference]: Finished difference. Result has 106 places, 74 transitions, 226 flow [2022-07-12 10:09:00,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2022-07-12 10:09:00,744 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2022-07-12 10:09:00,745 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 226 flow [2022-07-12 10:09:00,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:00,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:00,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:09:00,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:00,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1658672851, now seen corresponding path program 1 times [2022-07-12 10:09:00,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:00,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280865378] [2022-07-12 10:09:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:00,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:00,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280865378] [2022-07-12 10:09:00,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280865378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:00,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:00,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:00,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945248337] [2022-07-12 10:09:00,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:00,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:00,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:00,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:00,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:00,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-12 10:09:00,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:00,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-12 10:09:00,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:00,900 INFO L129 PetriNetUnfolder]: 43/199 cut-off events. [2022-07-12 10:09:00,900 INFO L130 PetriNetUnfolder]: For 259/276 co-relation queries the response was YES. [2022-07-12 10:09:00,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 199 events. 43/199 cut-off events. For 259/276 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 686 event pairs, 0 based on Foata normal form. 7/205 useless extension candidates. Maximal degree in co-relation 548. Up to 65 conditions per place. [2022-07-12 10:09:00,902 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 9 selfloop transitions, 7 changer transitions 25/100 dead transitions. [2022-07-12 10:09:00,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 489 flow [2022-07-12 10:09:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2022-07-12 10:09:00,904 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8604395604395605 [2022-07-12 10:09:00,904 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2022-07-12 10:09:00,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2022-07-12 10:09:00,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:00,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2022-07-12 10:09:00,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,908 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,908 INFO L186 Difference]: Start difference. First operand has 106 places, 74 transitions, 226 flow. Second operand 10 states and 783 transitions. [2022-07-12 10:09:00,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 489 flow [2022-07-12 10:09:00,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 463 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-12 10:09:00,910 INFO L242 Difference]: Finished difference. Result has 111 places, 74 transitions, 249 flow [2022-07-12 10:09:00,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=111, PETRI_TRANSITIONS=74} [2022-07-12 10:09:00,911 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 28 predicate places. [2022-07-12 10:09:00,911 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 74 transitions, 249 flow [2022-07-12 10:09:00,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,911 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:00,912 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:09:00,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1174102528, now seen corresponding path program 1 times [2022-07-12 10:09:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:00,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300671679] [2022-07-12 10:09:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:00,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300671679] [2022-07-12 10:09:00,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300671679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:00,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:00,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256298325] [2022-07-12 10:09:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:00,984 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-12 10:09:00,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 74 transitions, 249 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:00,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:00,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-12 10:09:00,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:01,068 INFO L129 PetriNetUnfolder]: 5/92 cut-off events. [2022-07-12 10:09:01,068 INFO L130 PetriNetUnfolder]: For 185/193 co-relation queries the response was YES. [2022-07-12 10:09:01,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 92 events. 5/92 cut-off events. For 185/193 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 5/97 useless extension candidates. Maximal degree in co-relation 218. Up to 14 conditions per place. [2022-07-12 10:09:01,069 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2022-07-12 10:09:01,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 77 transitions, 355 flow [2022-07-12 10:09:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:09:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:09:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2022-07-12 10:09:01,071 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8401598401598401 [2022-07-12 10:09:01,071 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2022-07-12 10:09:01,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2022-07-12 10:09:01,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:01,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2022-07-12 10:09:01,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:01,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:01,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:01,074 INFO L186 Difference]: Start difference. First operand has 111 places, 74 transitions, 249 flow. Second operand 11 states and 841 transitions. [2022-07-12 10:09:01,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 77 transitions, 355 flow [2022-07-12 10:09:01,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 77 transitions, 290 flow, removed 23 selfloop flow, removed 11 redundant places. [2022-07-12 10:09:01,076 INFO L242 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2022-07-12 10:09:01,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2022-07-12 10:09:01,077 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2022-07-12 10:09:01,077 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2022-07-12 10:09:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:01,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 10:09:01,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-12 10:09:01,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:09:01,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-12 10:09:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:09:01,080 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:01,082 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:09:01,082 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:09:01,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:09:01 BasicIcfg [2022-07-12 10:09:01,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:09:01,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:09:01,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:09:01,086 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:09:01,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:08:58" (3/4) ... [2022-07-12 10:09:01,088 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:09:01,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:09:01,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:09:01,092 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-12 10:09:01,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-12 10:09:01,094 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:09:01,095 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:09:01,095 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:09:01,112 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:09:01,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:09:01,113 INFO L158 Benchmark]: Toolchain (without parser) took 3883.73ms. Allocated memory was 117.4MB in the beginning and 174.1MB in the end (delta: 56.6MB). Free memory was 82.9MB in the beginning and 63.3MB in the end (delta: 19.6MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,113 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 77.6MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:09:01,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.59ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 82.0MB in the end (delta: 900.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.96ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 79.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,113 INFO L158 Benchmark]: Boogie Preprocessor took 28.61ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 78.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,114 INFO L158 Benchmark]: RCFGBuilder took 331.80ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 65.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,114 INFO L158 Benchmark]: TraceAbstraction took 3031.11ms. Allocated memory was 117.4MB in the beginning and 174.1MB in the end (delta: 56.6MB). Free memory was 65.2MB in the beginning and 65.4MB in the end (delta: -172.4kB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,114 INFO L158 Benchmark]: Witness Printer took 26.68ms. Allocated memory is still 174.1MB. Free memory was 65.4MB in the beginning and 63.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:01,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 77.6MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.59ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 82.0MB in the end (delta: 900.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.96ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 79.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.61ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 78.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 331.80ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 65.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3031.11ms. Allocated memory was 117.4MB in the beginning and 174.1MB in the end (delta: 56.6MB). Free memory was 65.2MB in the beginning and 65.4MB in the end (delta: -172.4kB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Witness Printer took 26.68ms. Allocated memory is still 174.1MB. Free memory was 65.4MB in the beginning and 63.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 399 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 399 mSDsluCounter, 708 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 673 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 605 IncrementalHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 173 mSDtfsCounter, 605 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=699occurred in iteration=5, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 601 NumberOfCodeBlocks, 601 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 2447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:09:01,139 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 Result: TRUE