./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:18:23,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:18:23,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:18:23,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:18:23,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:18:23,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:18:23,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:18:23,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:18:23,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:18:23,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:18:23,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:18:23,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:18:23,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:18:23,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:18:23,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:18:23,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:18:23,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:18:23,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:18:23,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:18:23,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:18:23,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:18:23,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:18:23,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:18:23,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:18:23,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:18:23,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:18:23,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:18:23,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:18:23,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:18:23,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:18:23,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:18:23,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:18:23,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:18:23,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:18:23,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:18:23,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:18:23,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:18:23,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:18:23,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:18:23,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:18:23,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:18:23,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:18:23,263 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:18:23,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:18:23,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:18:23,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:18:23,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:18:23,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:18:23,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:18:23,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:18:23,267 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:18:23,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:18:23,268 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:18:23,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:18:23,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:18:23,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:18:23,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:18:23,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:18:23,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:18:23,269 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:18:23,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:18:23,269 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:18:23,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:18:23,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:18:23,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:18:23,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:18:23,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:18:23,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:18:23,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:18:23,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:18:23,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:18:23,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:18:23,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:18:23,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:18:23,272 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:18:23,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:18:23,272 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:18:23,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:18:23,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:18:23,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:18:23,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:18:23,628 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:18:23,628 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:18:23,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-08-30 23:18:24,710 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:18:24,950 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:18:24,950 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-08-30 23:18:24,965 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3a6f636/82a1cda5a0d94b2a8e137383d432e185/FLAG7fadab75c [2023-08-30 23:18:24,978 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3a6f636/82a1cda5a0d94b2a8e137383d432e185 [2023-08-30 23:18:24,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:18:24,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:18:24,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:18:24,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:18:24,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:18:24,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:18:24" (1/1) ... [2023-08-30 23:18:24,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5466f06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:24, skipping insertion in model container [2023-08-30 23:18:24,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:18:24" (1/1) ... [2023-08-30 23:18:24,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:18:25,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:18:25,147 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/safe005_tso.i[945,958] [2023-08-30 23:18:25,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:18:25,342 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:18:25,365 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/safe005_tso.i[945,958] [2023-08-30 23:18:25,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:18:25,435 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:18:25,436 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:18:25,442 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:18:25,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25 WrapperNode [2023-08-30 23:18:25,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:18:25,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:18:25,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:18:25,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:18:25,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,504 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-30 23:18:25,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:18:25,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:18:25,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:18:25,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:18:25,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:18:25,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:18:25,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:18:25,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:18:25,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (1/1) ... [2023-08-30 23:18:25,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:18:25,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:18:25,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:18:25,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:18:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:18:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:18:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:18:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:18:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:18:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:18:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:18:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:18:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:18:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:18:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:18:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:18:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:18:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:18:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:18:25,631 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:18:25,737 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:18:25,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:18:25,924 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:18:25,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:18:25,930 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:18:25,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:18:25 BoogieIcfgContainer [2023-08-30 23:18:25,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:18:25,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:18:25,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:18:25,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:18:25,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:18:24" (1/3) ... [2023-08-30 23:18:25,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f9224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:18:25, skipping insertion in model container [2023-08-30 23:18:25,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:25" (2/3) ... [2023-08-30 23:18:25,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f9224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:18:25, skipping insertion in model container [2023-08-30 23:18:25,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:18:25" (3/3) ... [2023-08-30 23:18:25,962 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-08-30 23:18:25,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:18:25,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:18:25,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:18:25,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:18:26,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:18:26,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 23:18:26,158 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-08-30 23:18:26,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:18:26,166 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. [2023-08-30 23:18:26,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-30 23:18:26,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-30 23:18:26,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:18:26,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 23:18:26,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-30 23:18:26,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-30 23:18:26,232 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-08-30 23:18:26,232 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:18:26,234 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. [2023-08-30 23:18:26,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-30 23:18:28,160 INFO L134 LiptonReduction]: Checked pairs total: 2098 [2023-08-30 23:18:28,161 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-30 23:18:28,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:18:28,179 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;@5fbfce0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:18:28,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 23:18:28,184 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-08-30 23:18:28,184 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:18:28,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:28,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:28,186 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)] === [2023-08-30 23:18:28,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1331089238, now seen corresponding path program 1 times [2023-08-30 23:18:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335335862] [2023-08-30 23:18:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:28,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:28,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:28,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335335862] [2023-08-30 23:18:28,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335335862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:28,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:28,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:18:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485555984] [2023-08-30 23:18:28,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:28,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:18:28,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:18:28,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:18:28,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2023-08-30 23:18:28,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:28,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2023-08-30 23:18:28,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:28,846 INFO L130 PetriNetUnfolder]: 143/265 cut-off events. [2023-08-30 23:18:28,846 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 23:18:28,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 265 events. 143/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1077 event pairs, 53 based on Foata normal form. 9/270 useless extension candidates. Maximal degree in co-relation 525. Up to 154 conditions per place. [2023-08-30 23:18:28,852 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-30 23:18:28,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2023-08-30 23:18:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:18:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:18:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-08-30 23:18:28,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2023-08-30 23:18:28,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-08-30 23:18:28,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-08-30 23:18:28,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:28,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-08-30 23:18:28,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,885 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 253 transitions. [2023-08-30 23:18:28,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2023-08-30 23:18:28,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:28,890 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2023-08-30 23:18:28,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-30 23:18:28,895 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-30 23:18:28,896 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2023-08-30 23:18:28,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:28,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:18:28,901 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)] === [2023-08-30 23:18:28,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1685907729, now seen corresponding path program 1 times [2023-08-30 23:18:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212385713] [2023-08-30 23:18:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:29,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212385713] [2023-08-30 23:18:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212385713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:29,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:29,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:18:29,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534508026] [2023-08-30 23:18:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:18:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:18:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:18:29,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 143 [2023-08-30 23:18:29,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:29,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 143 [2023-08-30 23:18:29,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:29,268 INFO L130 PetriNetUnfolder]: 531/862 cut-off events. [2023-08-30 23:18:29,269 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-30 23:18:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 862 events. 531/862 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3831 event pairs, 39 based on Foata normal form. 48/910 useless extension candidates. Maximal degree in co-relation 1896. Up to 421 conditions per place. [2023-08-30 23:18:29,283 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-08-30 23:18:29,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 182 flow [2023-08-30 23:18:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:18:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:18:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-08-30 23:18:29,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2023-08-30 23:18:29,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-08-30 23:18:29,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-08-30 23:18:29,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:29,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-08-30 23:18:29,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,294 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,294 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 321 transitions. [2023-08-30 23:18:29,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 182 flow [2023-08-30 23:18:29,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:18:29,296 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 101 flow [2023-08-30 23:18:29,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-30 23:18:29,297 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-30 23:18:29,298 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 101 flow [2023-08-30 23:18:29,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:29,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:29,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:18:29,299 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)] === [2023-08-30 23:18:29,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash -724801001, now seen corresponding path program 1 times [2023-08-30 23:18:29,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085948951] [2023-08-30 23:18:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:29,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085948951] [2023-08-30 23:18:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085948951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:29,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:29,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3683903] [2023-08-30 23:18:29,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:29,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:29,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 143 [2023-08-30 23:18:29,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 101 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) [2023-08-30 23:18:29,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:29,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 143 [2023-08-30 23:18:29,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:29,720 INFO L130 PetriNetUnfolder]: 702/1153 cut-off events. [2023-08-30 23:18:29,720 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2023-08-30 23:18:29,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1153 events. 702/1153 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5558 event pairs, 90 based on Foata normal form. 36/1189 useless extension candidates. Maximal degree in co-relation 3146. Up to 576 conditions per place. [2023-08-30 23:18:29,726 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 30 selfloop transitions, 9 changer transitions 10/49 dead transitions. [2023-08-30 23:18:29,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 282 flow [2023-08-30 23:18:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:18:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:18:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-08-30 23:18:29,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2023-08-30 23:18:29,728 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-08-30 23:18:29,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-08-30 23:18:29,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:29,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-08-30 23:18:29,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,732 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 101 flow. Second operand 5 states and 396 transitions. [2023-08-30 23:18:29,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 282 flow [2023-08-30 23:18:29,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:18:29,735 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 152 flow [2023-08-30 23:18:29,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=101, 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=5, PETRI_FLOW=152, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-08-30 23:18:29,736 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-30 23:18:29,736 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 152 flow [2023-08-30 23:18:29,736 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) [2023-08-30 23:18:29,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:29,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:29,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:18:29,737 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)] === [2023-08-30 23:18:29,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash -954009263, now seen corresponding path program 1 times [2023-08-30 23:18:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278412661] [2023-08-30 23:18:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278412661] [2023-08-30 23:18:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278412661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:29,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:29,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:18:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489514554] [2023-08-30 23:18:29,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:29,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:29,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:29,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:29,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 143 [2023-08-30 23:18:29,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:29,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 143 [2023-08-30 23:18:29,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:30,058 INFO L130 PetriNetUnfolder]: 624/1063 cut-off events. [2023-08-30 23:18:30,058 INFO L131 PetriNetUnfolder]: For 1823/1823 co-relation queries the response was YES. [2023-08-30 23:18:30,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1063 events. 624/1063 cut-off events. For 1823/1823 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5171 event pairs, 103 based on Foata normal form. 36/1099 useless extension candidates. Maximal degree in co-relation 3222. Up to 296 conditions per place. [2023-08-30 23:18:30,063 INFO L137 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 8 changer transitions 21/60 dead transitions. [2023-08-30 23:18:30,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 406 flow [2023-08-30 23:18:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:18:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:18:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 547 transitions. [2023-08-30 23:18:30,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464535464535465 [2023-08-30 23:18:30,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 547 transitions. [2023-08-30 23:18:30,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 547 transitions. [2023-08-30 23:18:30,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:30,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 547 transitions. [2023-08-30 23:18:30,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.14285714285714) internal successors, (547), 7 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,070 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 152 flow. Second operand 7 states and 547 transitions. [2023-08-30 23:18:30,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 406 flow [2023-08-30 23:18:30,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:30,075 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 147 flow [2023-08-30 23:18:30,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-08-30 23:18:30,076 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-30 23:18:30,076 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 147 flow [2023-08-30 23:18:30,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:30,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:18:30,077 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)] === [2023-08-30 23:18:30,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1296776372, now seen corresponding path program 1 times [2023-08-30 23:18:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737775266] [2023-08-30 23:18:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737775266] [2023-08-30 23:18:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737775266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:30,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:18:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571821135] [2023-08-30 23:18:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:18:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:18:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:18:30,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 143 [2023-08-30 23:18:30,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:30,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 143 [2023-08-30 23:18:30,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:30,276 INFO L130 PetriNetUnfolder]: 279/496 cut-off events. [2023-08-30 23:18:30,276 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-08-30 23:18:30,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 496 events. 279/496 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1936 event pairs, 115 based on Foata normal form. 10/506 useless extension candidates. Maximal degree in co-relation 1516. Up to 220 conditions per place. [2023-08-30 23:18:30,279 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 23 selfloop transitions, 6 changer transitions 4/33 dead transitions. [2023-08-30 23:18:30,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 256 flow [2023-08-30 23:18:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:18:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:18:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-08-30 23:18:30,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-08-30 23:18:30,281 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-08-30 23:18:30,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-08-30 23:18:30,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:30,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-08-30 23:18:30,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,285 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 147 flow. Second operand 4 states and 308 transitions. [2023-08-30 23:18:30,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 256 flow [2023-08-30 23:18:30,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 215 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 23:18:30,290 INFO L231 Difference]: Finished difference. Result has 41 places, 24 transitions, 148 flow [2023-08-30 23:18:30,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=24} [2023-08-30 23:18:30,292 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-30 23:18:30,293 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 148 flow [2023-08-30 23:18:30,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:30,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:30,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:18:30,295 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)] === [2023-08-30 23:18:30,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1545352258, now seen corresponding path program 1 times [2023-08-30 23:18:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:30,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560327424] [2023-08-30 23:18:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:30,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:30,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:30,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560327424] [2023-08-30 23:18:30,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560327424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:30,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:30,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391362006] [2023-08-30 23:18:30,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:30,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:18:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:18:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:18:30,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2023-08-30 23:18:30,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:30,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2023-08-30 23:18:30,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:30,539 INFO L130 PetriNetUnfolder]: 235/452 cut-off events. [2023-08-30 23:18:30,539 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2023-08-30 23:18:30,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 452 events. 235/452 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1988 event pairs, 91 based on Foata normal form. 8/454 useless extension candidates. Maximal degree in co-relation 1298. Up to 207 conditions per place. [2023-08-30 23:18:30,542 INFO L137 encePairwiseOnDemand]: 139/143 looper letters, 24 selfloop transitions, 4 changer transitions 7/37 dead transitions. [2023-08-30 23:18:30,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 246 flow [2023-08-30 23:18:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:18:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:18:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-30 23:18:30,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-08-30 23:18:30,543 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-30 23:18:30,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-30 23:18:30,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:30,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-30 23:18:30,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,546 INFO L175 Difference]: Start difference. First operand has 41 places, 24 transitions, 148 flow. Second operand 4 states and 329 transitions. [2023-08-30 23:18:30,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 246 flow [2023-08-30 23:18:30,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 233 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:30,548 INFO L231 Difference]: Finished difference. Result has 42 places, 21 transitions, 114 flow [2023-08-30 23:18:30,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=21} [2023-08-30 23:18:30,549 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-30 23:18:30,549 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 21 transitions, 114 flow [2023-08-30 23:18:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:30,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:18:30,550 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)] === [2023-08-30 23:18:30,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:30,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1546390138, now seen corresponding path program 2 times [2023-08-30 23:18:30,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181965042] [2023-08-30 23:18:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:30,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:30,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181965042] [2023-08-30 23:18:30,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181965042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:30,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:30,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228753786] [2023-08-30 23:18:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:30,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:18:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:18:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:18:30,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 143 [2023-08-30 23:18:30,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 21 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:30,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 143 [2023-08-30 23:18:30,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:30,763 INFO L130 PetriNetUnfolder]: 213/394 cut-off events. [2023-08-30 23:18:30,764 INFO L131 PetriNetUnfolder]: For 488/488 co-relation queries the response was YES. [2023-08-30 23:18:30,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 394 events. 213/394 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1511 event pairs, 64 based on Foata normal form. 16/410 useless extension candidates. Maximal degree in co-relation 1112. Up to 297 conditions per place. [2023-08-30 23:18:30,765 INFO L137 encePairwiseOnDemand]: 137/143 looper letters, 19 selfloop transitions, 4 changer transitions 16/39 dead transitions. [2023-08-30 23:18:30,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 246 flow [2023-08-30 23:18:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:18:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:18:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2023-08-30 23:18:30,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286713286713287 [2023-08-30 23:18:30,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2023-08-30 23:18:30,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2023-08-30 23:18:30,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:30,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2023-08-30 23:18:30,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,772 INFO L175 Difference]: Start difference. First operand has 42 places, 21 transitions, 114 flow. Second operand 5 states and 378 transitions. [2023-08-30 23:18:30,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 246 flow [2023-08-30 23:18:30,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 214 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 23:18:30,775 INFO L231 Difference]: Finished difference. Result has 37 places, 17 transitions, 77 flow [2023-08-30 23:18:30,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=17} [2023-08-30 23:18:30,776 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-30 23:18:30,776 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 77 flow [2023-08-30 23:18:30,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:30,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:30,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:18:30,777 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)] === [2023-08-30 23:18:30,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:30,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2020347454, now seen corresponding path program 1 times [2023-08-30 23:18:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126885076] [2023-08-30 23:18:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:30,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126885076] [2023-08-30 23:18:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126885076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:30,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:30,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:18:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722080080] [2023-08-30 23:18:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:30,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:18:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:18:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:18:30,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-30 23:18:30,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:30,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-30 23:18:30,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:30,959 INFO L130 PetriNetUnfolder]: 33/81 cut-off events. [2023-08-30 23:18:30,959 INFO L131 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2023-08-30 23:18:30,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 81 events. 33/81 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 198 event pairs, 11 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 217. Up to 62 conditions per place. [2023-08-30 23:18:30,960 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2023-08-30 23:18:30,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 145 flow [2023-08-30 23:18:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:18:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:18:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-30 23:18:30,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-08-30 23:18:30,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-30 23:18:30,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-30 23:18:30,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:30,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-30 23:18:30,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,964 INFO L175 Difference]: Start difference. First operand has 37 places, 17 transitions, 77 flow. Second operand 3 states and 247 transitions. [2023-08-30 23:18:30,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 145 flow [2023-08-30 23:18:30,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 113 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 23:18:30,966 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-08-30 23:18:30,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-30 23:18:30,966 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-30 23:18:30,967 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-08-30 23:18:30,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:30,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:30,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:18:30,967 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)] === [2023-08-30 23:18:30,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash 659536286, now seen corresponding path program 1 times [2023-08-30 23:18:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:30,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757445594] [2023-08-30 23:18:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757445594] [2023-08-30 23:18:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757445594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:31,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:31,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982059077] [2023-08-30 23:18:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:18:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:18:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:18:31,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-30 23:18:31,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:31,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-30 23:18:31,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:31,135 INFO L130 PetriNetUnfolder]: 16/53 cut-off events. [2023-08-30 23:18:31,135 INFO L131 PetriNetUnfolder]: For 21/26 co-relation queries the response was YES. [2023-08-30 23:18:31,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 53 events. 16/53 cut-off events. For 21/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 3 based on Foata normal form. 7/59 useless extension candidates. Maximal degree in co-relation 151. Up to 26 conditions per place. [2023-08-30 23:18:31,136 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 16 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-08-30 23:18:31,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 150 flow [2023-08-30 23:18:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:18:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:18:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 23:18:31,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-30 23:18:31,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 23:18:31,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 23:18:31,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:31,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 23:18:31,139 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) [2023-08-30 23:18:31,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,140 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 4 states and 325 transitions. [2023-08-30 23:18:31,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 150 flow [2023-08-30 23:18:31,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 143 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 23:18:31,142 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 84 flow [2023-08-30 23:18:31,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-30 23:18:31,143 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 23:18:31,143 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 84 flow [2023-08-30 23:18:31,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:31,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:31,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:18:31,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 23:18:31,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1416706244, now seen corresponding path program 1 times [2023-08-30 23:18:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:31,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166926952] [2023-08-30 23:18:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:31,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:31,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166926952] [2023-08-30 23:18:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166926952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:31,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:18:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904064108] [2023-08-30 23:18:31,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:31,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-30 23:18:31,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:31,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-30 23:18:31,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:31,337 INFO L130 PetriNetUnfolder]: 10/36 cut-off events. [2023-08-30 23:18:31,337 INFO L131 PetriNetUnfolder]: For 50/57 co-relation queries the response was YES. [2023-08-30 23:18:31,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 36 events. 10/36 cut-off events. For 50/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 2 based on Foata normal form. 6/41 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-08-30 23:18:31,338 INFO L137 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-30 23:18:31,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 137 flow [2023-08-30 23:18:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:18:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:18:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-08-30 23:18:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2023-08-30 23:18:31,340 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-08-30 23:18:31,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-08-30 23:18:31,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:31,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-08-30 23:18:31,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,343 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 84 flow. Second operand 5 states and 396 transitions. [2023-08-30 23:18:31,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 137 flow [2023-08-30 23:18:31,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 122 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:31,344 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-08-30 23:18:31,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-08-30 23:18:31,344 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 23:18:31,345 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-08-30 23:18:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 23:18:31,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 23:18:31,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 23:18:31,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 23:18:31,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:18:31,349 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:31,352 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:18:31,352 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:18:31,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:18:31 BasicIcfg [2023-08-30 23:18:31,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:18:31,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:18:31,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:18:31,356 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:18:31,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:18:25" (3/4) ... [2023-08-30 23:18:31,358 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:18:31,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:18:31,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:18:31,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 23:18:31,367 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 23:18:31,367 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 23:18:31,368 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:18:31,368 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:18:31,399 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:18:31,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:18:31,400 INFO L158 Benchmark]: Toolchain (without parser) took 6418.88ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 44.0MB in the beginning and 95.5MB in the end (delta: -51.5MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,400 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 67.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:18:31,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.72ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 55.2MB in the end (delta: -11.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.94ms. Allocated memory is still 81.8MB. Free memory was 55.2MB in the beginning and 53.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,401 INFO L158 Benchmark]: Boogie Preprocessor took 50.75ms. Allocated memory is still 81.8MB. Free memory was 53.1MB in the beginning and 51.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,401 INFO L158 Benchmark]: RCFGBuilder took 378.59ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 37.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,402 INFO L158 Benchmark]: TraceAbstraction took 5398.74ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 61.3MB in the beginning and 28.5MB in the end (delta: 32.8MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,402 INFO L158 Benchmark]: Witness Printer took 44.41ms. Allocated memory is still 119.5MB. Free memory was 28.5MB in the beginning and 95.5MB in the end (delta: -67.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:18:31,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 67.1MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.72ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 55.2MB in the end (delta: -11.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.94ms. Allocated memory is still 81.8MB. Free memory was 55.2MB in the beginning and 53.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.75ms. Allocated memory is still 81.8MB. Free memory was 53.1MB in the beginning and 51.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 378.59ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 37.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5398.74ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 61.3MB in the beginning and 28.5MB in the end (delta: 32.8MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. * Witness Printer took 44.41ms. Allocated memory is still 119.5MB. Free memory was 28.5MB in the beginning and 95.5MB in the end (delta: -67.0MB). 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, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 2098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1269, independent: 1185, independent conditional: 0, independent unconditional: 1185, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 586, independent: 562, independent conditional: 0, independent unconditional: 562, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1269, independent: 623, independent conditional: 0, independent unconditional: 623, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: 5.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 280 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 489 IncrementalHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 27 mSDtfsCounter, 489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 44, 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, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:18:31,426 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