./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:57:47,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:57:47,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:57:47,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:57:47,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:57:47,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:57:47,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:57:47,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:57:47,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:57:47,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:57:47,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:57:47,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:57:47,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:57:47,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:57:47,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:57:47,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:57:47,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:57:47,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:57:47,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:57:47,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:57:47,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:57:47,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:57:47,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:57:47,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:57:47,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:57:47,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:57:47,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:57:47,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:57:47,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:57:47,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:57:47,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:57:47,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:57:47,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:57:47,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:57:47,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:57:47,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:57:47,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:57:47,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:57:47,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:57:47,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:57:47,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:57:47,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:57:47,418 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:57:47,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:57:47,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:57:47,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:57:47,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:57:47,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:57:47,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:57:47,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:57:47,422 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:57:47,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:57:47,423 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:57:47,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:57:47,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:57:47,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:57:47,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:57:47,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:57:47,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:57:47,424 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:57:47,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:57:47,424 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:57:47,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:57:47,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:57:47,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:57:47,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:57:47,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:57:47,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:57:47,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:57:47,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:57:47,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:57:47,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:57:47,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:57:47,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:57:47,427 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:57:47,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:57:47,427 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:57:47,427 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:57:47,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:57:47,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:57:47,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:57:47,785 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:57:47,785 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:57:47,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-09-01 09:57:49,009 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:57:49,231 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:57:49,232 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2023-09-01 09:57:49,258 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7428f26b/1bc94e61310845ac8455e960c231d726/FLAG5e52ae4f0 [2023-09-01 09:57:49,270 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7428f26b/1bc94e61310845ac8455e960c231d726 [2023-09-01 09:57:49,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:57:49,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:57:49,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:57:49,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:57:49,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:57:49,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4556cf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49, skipping insertion in model container [2023-09-01 09:57:49,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:57:49,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:57:49,456 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2023-09-01 09:57:49,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:57:49,592 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:57:49,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2023-09-01 09:57:49,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:57:49,675 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:57:49,675 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:57:49,681 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:57:49,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49 WrapperNode [2023-09-01 09:57:49,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:57:49,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:57:49,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:57:49,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:57:49,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,722 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-09-01 09:57:49,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:57:49,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:57:49,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:57:49,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:57:49,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:57:49,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:57:49,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:57:49,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:57:49,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (1/1) ... [2023-09-01 09:57:49,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:57:49,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:57:49,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:57:49,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:57:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:57:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:57:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:57:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:57:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:57:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:57:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:57:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:57:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:57:49,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:57:49,847 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:57:49,996 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:57:49,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:57:50,219 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:57:50,226 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:57:50,226 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:57:50,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:57:50 BoogieIcfgContainer [2023-09-01 09:57:50,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:57:50,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:57:50,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:57:50,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:57:50,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:57:49" (1/3) ... [2023-09-01 09:57:50,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f634dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:57:50, skipping insertion in model container [2023-09-01 09:57:50,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:57:49" (2/3) ... [2023-09-01 09:57:50,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f634dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:57:50, skipping insertion in model container [2023-09-01 09:57:50,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:57:50" (3/3) ... [2023-09-01 09:57:50,236 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-09-01 09:57:50,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:57:50,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:57:50,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:57:50,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:57:50,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:57:50,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:57:50,460 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-09-01 09:57:50,461 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:57:50,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:57:50,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:57:50,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-09-01 09:57:50,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:57:50,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:57:50,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:57:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-09-01 09:57:50,509 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-09-01 09:57:50,509 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:57:50,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:57:50,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:57:52,483 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-09-01 09:57:52,493 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-09-01 09:57:52,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:57:52,517 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@309d01c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:57:52,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:57:52,523 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 09:57:52,524 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:57:52,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:52,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:52,526 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)] === [2023-09-01 09:57:52,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1968690569, now seen corresponding path program 1 times [2023-09-01 09:57:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:52,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058724629] [2023-09-01 09:57:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:52,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058724629] [2023-09-01 09:57:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058724629] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:53,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:57:53,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852328065] [2023-09-01 09:57:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:57:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:57:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:57:53,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-09-01 09:57:53,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:53,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-09-01 09:57:53,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:53,325 INFO L130 PetriNetUnfolder]: 381/644 cut-off events. [2023-09-01 09:57:53,326 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 09:57:53,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 644 events. 381/644 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2950 event pairs, 117 based on Foata normal form. 26/670 useless extension candidates. Maximal degree in co-relation 1308. Up to 439 conditions per place. [2023-09-01 09:57:53,336 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 22 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-09-01 09:57:53,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 122 flow [2023-09-01 09:57:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:57:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:57:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-09-01 09:57:53,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2023-09-01 09:57:53,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-09-01 09:57:53,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-09-01 09:57:53,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:53,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-09-01 09:57:53,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,381 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 244 transitions. [2023-09-01 09:57:53,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 122 flow [2023-09-01 09:57:53,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:57:53,387 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 78 flow [2023-09-01 09:57:53,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-09-01 09:57:53,421 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-09-01 09:57:53,421 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 78 flow [2023-09-01 09:57:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:53,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:53,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:57:53,426 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)] === [2023-09-01 09:57:53,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash 899864850, now seen corresponding path program 1 times [2023-09-01 09:57:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:53,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282872440] [2023-09-01 09:57:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282872440] [2023-09-01 09:57:53,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282872440] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:53,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:53,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145409403] [2023-09-01 09:57:53,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:53,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:53,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:53,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-09-01 09:57:53,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:53,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-09-01 09:57:53,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:53,811 INFO L130 PetriNetUnfolder]: 359/600 cut-off events. [2023-09-01 09:57:53,811 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2023-09-01 09:57:53,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 600 events. 359/600 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2647 event pairs, 99 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 1566. Up to 339 conditions per place. [2023-09-01 09:57:53,815 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-09-01 09:57:53,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 166 flow [2023-09-01 09:57:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:57:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:57:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-09-01 09:57:53,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620567375886525 [2023-09-01 09:57:53,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-09-01 09:57:53,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-09-01 09:57:53,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:53,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-09-01 09:57:53,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,821 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 78 flow. Second operand 4 states and 317 transitions. [2023-09-01 09:57:53,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 166 flow [2023-09-01 09:57:53,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:57:53,823 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 106 flow [2023-09-01 09:57:53,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-09-01 09:57:53,824 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-09-01 09:57:53,824 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 106 flow [2023-09-01 09:57:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:53,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:57:53,825 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)] === [2023-09-01 09:57:53,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 899864199, now seen corresponding path program 1 times [2023-09-01 09:57:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869454748] [2023-09-01 09:57:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:53,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869454748] [2023-09-01 09:57:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869454748] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:53,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117140368] [2023-09-01 09:57:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:53,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-09-01 09:57:53,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:53,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:53,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-09-01 09:57:53,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:54,081 INFO L130 PetriNetUnfolder]: 336/575 cut-off events. [2023-09-01 09:57:54,081 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2023-09-01 09:57:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 575 events. 336/575 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2623 event pairs, 73 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 1600. Up to 360 conditions per place. [2023-09-01 09:57:54,085 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2023-09-01 09:57:54,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 248 flow [2023-09-01 09:57:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:57:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:57:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-09-01 09:57:54,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762411347517731 [2023-09-01 09:57:54,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-09-01 09:57:54,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-09-01 09:57:54,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:54,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-09-01 09:57:54,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,091 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 106 flow. Second operand 4 states and 325 transitions. [2023-09-01 09:57:54,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 248 flow [2023-09-01 09:57:54,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:57:54,095 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 169 flow [2023-09-01 09:57:54,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-09-01 09:57:54,095 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-09-01 09:57:54,096 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 169 flow [2023-09-01 09:57:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:54,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:54,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:57:54,097 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)] === [2023-09-01 09:57:54,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2126005278, now seen corresponding path program 1 times [2023-09-01 09:57:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984476760] [2023-09-01 09:57:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984476760] [2023-09-01 09:57:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984476760] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:54,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317574460] [2023-09-01 09:57:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:54,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:57:54,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:54,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:57:54,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:54,389 INFO L130 PetriNetUnfolder]: 525/848 cut-off events. [2023-09-01 09:57:54,389 INFO L131 PetriNetUnfolder]: For 1248/1248 co-relation queries the response was YES. [2023-09-01 09:57:54,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2636 conditions, 848 events. 525/848 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3599 event pairs, 67 based on Foata normal form. 14/862 useless extension candidates. Maximal degree in co-relation 2618. Up to 329 conditions per place. [2023-09-01 09:57:54,396 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 42 selfloop transitions, 19 changer transitions 0/61 dead transitions. [2023-09-01 09:57:54,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 452 flow [2023-09-01 09:57:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-09-01 09:57:54,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-09-01 09:57:54,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-09-01 09:57:54,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-09-01 09:57:54,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:54,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-09-01 09:57:54,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,402 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 169 flow. Second operand 5 states and 400 transitions. [2023-09-01 09:57:54,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 452 flow [2023-09-01 09:57:54,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 450 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 09:57:54,407 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 359 flow [2023-09-01 09:57:54,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-09-01 09:57:54,408 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-09-01 09:57:54,408 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 359 flow [2023-09-01 09:57:54,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:54,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:54,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:57:54,409 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)] === [2023-09-01 09:57:54,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2125985748, now seen corresponding path program 2 times [2023-09-01 09:57:54,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:54,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941780829] [2023-09-01 09:57:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:54,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:54,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941780829] [2023-09-01 09:57:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941780829] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574367579] [2023-09-01 09:57:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:57:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:57:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:57:54,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:57:54,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:54,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:57:54,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:54,714 INFO L130 PetriNetUnfolder]: 577/950 cut-off events. [2023-09-01 09:57:54,714 INFO L131 PetriNetUnfolder]: For 3196/3196 co-relation queries the response was YES. [2023-09-01 09:57:54,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 950 events. 577/950 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4209 event pairs, 141 based on Foata normal form. 40/990 useless extension candidates. Maximal degree in co-relation 3498. Up to 372 conditions per place. [2023-09-01 09:57:54,720 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 7 changer transitions 22/59 dead transitions. [2023-09-01 09:57:54,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 570 flow [2023-09-01 09:57:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-09-01 09:57:54,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2023-09-01 09:57:54,723 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-09-01 09:57:54,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-09-01 09:57:54,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:54,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-09-01 09:57:54,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,726 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 359 flow. Second operand 5 states and 390 transitions. [2023-09-01 09:57:54,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 570 flow [2023-09-01 09:57:54,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:57:54,736 INFO L231 Difference]: Finished difference. Result has 50 places, 24 transitions, 208 flow [2023-09-01 09:57:54,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=24} [2023-09-01 09:57:54,737 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-09-01 09:57:54,737 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 24 transitions, 208 flow [2023-09-01 09:57:54,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:54,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:54,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:57:54,738 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)] === [2023-09-01 09:57:54,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1996464414, now seen corresponding path program 1 times [2023-09-01 09:57:54,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:54,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491110476] [2023-09-01 09:57:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491110476] [2023-09-01 09:57:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491110476] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:54,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:54,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:57:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973938489] [2023-09-01 09:57:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:54,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:57:54,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 24 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:54,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:57:54,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:54,949 INFO L130 PetriNetUnfolder]: 173/350 cut-off events. [2023-09-01 09:57:54,949 INFO L131 PetriNetUnfolder]: For 1909/1978 co-relation queries the response was YES. [2023-09-01 09:57:54,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 350 events. 173/350 cut-off events. For 1909/1978 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1634 event pairs, 45 based on Foata normal form. 27/364 useless extension candidates. Maximal degree in co-relation 1279. Up to 211 conditions per place. [2023-09-01 09:57:54,952 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 7 changer transitions 6/51 dead transitions. [2023-09-01 09:57:54,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 469 flow [2023-09-01 09:57:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-09-01 09:57:54,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801418439716312 [2023-09-01 09:57:54,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-09-01 09:57:54,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-09-01 09:57:54,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:54,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-09-01 09:57:54,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,957 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,957 INFO L175 Difference]: Start difference. First operand has 50 places, 24 transitions, 208 flow. Second operand 5 states and 409 transitions. [2023-09-01 09:57:54,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 469 flow [2023-09-01 09:57:54,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 323 flow, removed 17 selfloop flow, removed 14 redundant places. [2023-09-01 09:57:54,961 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 175 flow [2023-09-01 09:57:54,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-09-01 09:57:54,962 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-09-01 09:57:54,962 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 175 flow [2023-09-01 09:57:54,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:54,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:54,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:54,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:57:54,962 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)] === [2023-09-01 09:57:54,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1812874730, now seen corresponding path program 1 times [2023-09-01 09:57:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850696089] [2023-09-01 09:57:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850696089] [2023-09-01 09:57:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850696089] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999985322] [2023-09-01 09:57:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:55,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:57:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:57:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:57:55,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:57:55,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:55,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:57:55,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:55,216 INFO L130 PetriNetUnfolder]: 145/315 cut-off events. [2023-09-01 09:57:55,216 INFO L131 PetriNetUnfolder]: For 671/766 co-relation queries the response was YES. [2023-09-01 09:57:55,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 315 events. 145/315 cut-off events. For 671/766 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1497 event pairs, 18 based on Foata normal form. 62/368 useless extension candidates. Maximal degree in co-relation 1177. Up to 160 conditions per place. [2023-09-01 09:57:55,218 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 33 selfloop transitions, 13 changer transitions 11/65 dead transitions. [2023-09-01 09:57:55,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 489 flow [2023-09-01 09:57:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:57:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:57:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 569 transitions. [2023-09-01 09:57:55,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764944275582573 [2023-09-01 09:57:55,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 569 transitions. [2023-09-01 09:57:55,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 569 transitions. [2023-09-01 09:57:55,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:55,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 569 transitions. [2023-09-01 09:57:55,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.28571428571429) internal successors, (569), 7 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,225 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,225 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 175 flow. Second operand 7 states and 569 transitions. [2023-09-01 09:57:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 489 flow [2023-09-01 09:57:55,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:57:55,228 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 259 flow [2023-09-01 09:57:55,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-09-01 09:57:55,229 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-09-01 09:57:55,230 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 259 flow [2023-09-01 09:57:55,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:55,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:55,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:57:55,231 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)] === [2023-09-01 09:57:55,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 728392813, now seen corresponding path program 1 times [2023-09-01 09:57:55,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841326478] [2023-09-01 09:57:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:55,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841326478] [2023-09-01 09:57:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841326478] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:55,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:55,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:57:55,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194869803] [2023-09-01 09:57:55,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:55,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:57:55,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:55,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:57:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:57:55,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:57:55,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:55,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:57:55,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:55,553 INFO L130 PetriNetUnfolder]: 124/283 cut-off events. [2023-09-01 09:57:55,554 INFO L131 PetriNetUnfolder]: For 1016/1133 co-relation queries the response was YES. [2023-09-01 09:57:55,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 283 events. 124/283 cut-off events. For 1016/1133 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1348 event pairs, 14 based on Foata normal form. 68/343 useless extension candidates. Maximal degree in co-relation 1239. Up to 138 conditions per place. [2023-09-01 09:57:55,556 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 17 changer transitions 11/65 dead transitions. [2023-09-01 09:57:55,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 547 flow [2023-09-01 09:57:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:57:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:57:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2023-09-01 09:57:55,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-09-01 09:57:55,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2023-09-01 09:57:55,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2023-09-01 09:57:55,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:55,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2023-09-01 09:57:55,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,564 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,564 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 259 flow. Second operand 9 states and 717 transitions. [2023-09-01 09:57:55,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 547 flow [2023-09-01 09:57:55,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 517 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-09-01 09:57:55,570 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 285 flow [2023-09-01 09:57:55,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2023-09-01 09:57:55,572 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-09-01 09:57:55,573 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 285 flow [2023-09-01 09:57:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:57:55,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:55,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:57:55,574 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)] === [2023-09-01 09:57:55,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:57:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1287629806, now seen corresponding path program 1 times [2023-09-01 09:57:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:57:55,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043067174] [2023-09-01 09:57:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:57:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:57:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:57:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:57:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:57:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043067174] [2023-09-01 09:57:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043067174] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:57:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:57:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:57:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185740794] [2023-09-01 09:57:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:57:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:57:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:57:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:57:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:57:55,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:57:55,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:57:55,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:57:55,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:57:55,826 INFO L130 PetriNetUnfolder]: 202/420 cut-off events. [2023-09-01 09:57:55,826 INFO L131 PetriNetUnfolder]: For 1487/1487 co-relation queries the response was YES. [2023-09-01 09:57:55,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 420 events. 202/420 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1949 event pairs, 25 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1889. Up to 220 conditions per place. [2023-09-01 09:57:55,829 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-09-01 09:57:55,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 657 flow [2023-09-01 09:57:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:57:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:57:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-09-01 09:57:55,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517730496453901 [2023-09-01 09:57:55,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-09-01 09:57:55,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-09-01 09:57:55,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:57:55,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-09-01 09:57:55,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,834 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 285 flow. Second operand 5 states and 389 transitions. [2023-09-01 09:57:55,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 657 flow [2023-09-01 09:57:55,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 514 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-09-01 09:57:55,840 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-09-01 09:57:55,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-09-01 09:57:55,841 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-09-01 09:57:55,841 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-09-01 09:57:55,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:57:55,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:57:55,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:57:55,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:57:55,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:57:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:57:55,845 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:57:55,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:57:55,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:57:55,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:57:55 BasicIcfg [2023-09-01 09:57:55,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:57:55,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:57:55,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:57:55,852 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:57:55,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:57:50" (3/4) ... [2023-09-01 09:57:55,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:57:55,860 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:57:55,860 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:57:55,860 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:57:55,864 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:57:55,864 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:57:55,864 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:57:55,865 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:57:55,891 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:57:55,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:57:55,892 INFO L158 Benchmark]: Toolchain (without parser) took 6618.86ms. Allocated memory was 71.3MB in the beginning and 180.4MB in the end (delta: 109.1MB). Free memory was 39.1MB in the beginning and 107.1MB in the end (delta: -68.0MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,892 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:57:55,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.79ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 38.4MB in the end (delta: 451.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.87ms. Allocated memory is still 71.3MB. Free memory was 38.1MB in the beginning and 36.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,893 INFO L158 Benchmark]: Boogie Preprocessor took 20.89ms. Allocated memory is still 71.3MB. Free memory was 36.1MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,893 INFO L158 Benchmark]: RCFGBuilder took 483.45ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 34.7MB in the beginning and 63.3MB in the end (delta: -28.6MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,894 INFO L158 Benchmark]: TraceAbstraction took 5620.80ms. Allocated memory was 94.4MB in the beginning and 180.4MB in the end (delta: 86.0MB). Free memory was 63.1MB in the beginning and 109.2MB in the end (delta: -46.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,894 INFO L158 Benchmark]: Witness Printer took 40.35ms. Allocated memory is still 180.4MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:57:55,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.79ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 38.4MB in the end (delta: 451.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.87ms. Allocated memory is still 71.3MB. Free memory was 38.1MB in the beginning and 36.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.89ms. Allocated memory is still 71.3MB. Free memory was 36.1MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 483.45ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 34.7MB in the beginning and 63.3MB in the end (delta: -28.6MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5620.80ms. Allocated memory was 94.4MB in the beginning and 180.4MB in the end (delta: 86.0MB). Free memory was 63.1MB in the beginning and 109.2MB in the end (delta: -46.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Witness Printer took 40.35ms. Allocated memory is still 180.4MB. Free memory was 109.2MB in the beginning and 107.1MB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1216, independent: 1139, independent conditional: 0, independent unconditional: 1139, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 555, independent conditional: 0, independent unconditional: 555, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1216, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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, 108 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: 5.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 551 IncrementalHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 43 mSDtfsCounter, 551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=359occurred in iteration=4, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-09-01 09:57:55,917 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