./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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 a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 --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 23:16:11,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:16:11,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:16:11,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:16:11,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:16:11,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:16:11,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:16:11,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:16:11,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:16:11,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:16:11,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:16:11,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:16:11,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:16:11,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:16:11,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:16:11,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:16:11,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:16:11,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:16:11,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:16:11,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:16:11,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:16:11,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:16:11,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:16:11,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:16:11,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:16:11,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:16:11,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:16:11,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:16:11,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:16:11,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:16:11,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:16:11,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:16:11,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:16:11,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:16:11,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:16:11,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:16:11,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:16:11,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:16:11,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:16:11,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:16:11,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:16:11,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:16:11,311 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:16:11,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:16:11,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:16:11,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:16:11,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:16:11,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:16:11,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:16:11,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:16:11,315 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:16:11,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:16:11,316 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:16:11,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:16:11,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:16:11,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:16:11,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:16:11,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:16:11,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:16:11,318 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:16:11,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:16:11,318 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:16:11,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:16:11,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:16:11,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:16:11,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:16:11,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:16:11,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:16:11,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:16:11,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:16:11,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:16:11,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:16:11,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:16:11,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:16:11,321 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:16:11,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:16:11,322 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:16:11,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:16:11,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:16:11,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:16:11,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:16:11,649 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:16:11,650 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:16:11,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 23:16:12,850 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:16:13,153 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:16:13,154 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 23:16:13,175 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6404d10/f007b418c9d742b0807c0772521fe2ba/FLAGa1884918c [2023-08-30 23:16:13,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6404d10/f007b418c9d742b0807c0772521fe2ba [2023-08-30 23:16:13,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:16:13,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:16:13,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:16:13,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:16:13,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:16:13,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edb285c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13, skipping insertion in model container [2023-08-30 23:16:13,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:16:13,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:16:13,432 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/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-08-30 23:16:13,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:16:13,653 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:16:13,664 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/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-08-30 23:16:13,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:16:13,755 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:16:13,755 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:16:13,761 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:16:13,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13 WrapperNode [2023-08-30 23:16:13,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:16:13,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:16:13,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:16:13,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:16:13,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,835 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2023-08-30 23:16:13,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:16:13,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:16:13,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:16:13,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:16:13,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:16:13,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:16:13,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:16:13,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:16:13,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (1/1) ... [2023-08-30 23:16:13,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:16:13,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:16:13,930 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 23:16:13,956 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 23:16:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:16:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:16:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:16:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:16:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:16:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:16:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:16:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:16:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:16:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:16:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:16:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 23:16:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 23:16:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:16:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:16:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:16:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:16:13,974 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 23:16:14,115 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:16:14,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:16:14,487 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:16:14,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:16:14,667 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:16:14,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:14 BoogieIcfgContainer [2023-08-30 23:16:14,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:16:14,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:16:14,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:16:14,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:16:14,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:16:13" (1/3) ... [2023-08-30 23:16:14,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c68eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:16:14, skipping insertion in model container [2023-08-30 23:16:14,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:16:13" (2/3) ... [2023-08-30 23:16:14,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c68eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:16:14, skipping insertion in model container [2023-08-30 23:16:14,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:14" (3/3) ... [2023-08-30 23:16:14,678 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 23:16:14,685 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:16:14,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:16:14,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:16:14,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:16:14,752 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:16:14,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 270 flow [2023-08-30 23:16:14,857 INFO L130 PetriNetUnfolder]: 2/121 cut-off events. [2023-08-30 23:16:14,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:14,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 2/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-08-30 23:16:14,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 125 transitions, 270 flow [2023-08-30 23:16:14,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 254 flow [2023-08-30 23:16:14,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:16:14,899 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 121 transitions, 254 flow [2023-08-30 23:16:14,903 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 121 transitions, 254 flow [2023-08-30 23:16:14,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 121 transitions, 254 flow [2023-08-30 23:16:14,942 INFO L130 PetriNetUnfolder]: 2/121 cut-off events. [2023-08-30 23:16:14,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:14,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 2/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-08-30 23:16:14,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 2736 [2023-08-30 23:16:19,751 INFO L134 LiptonReduction]: Checked pairs total: 6414 [2023-08-30 23:16:19,751 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 23:16:19,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:16:19,769 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;@3bbda7b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:16:19,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 23:16:19,776 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-08-30 23:16:19,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:16:19,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:19,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:19,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:19,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1088228860, now seen corresponding path program 1 times [2023-08-30 23:16:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190261466] [2023-08-30 23:16:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:20,315 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 23:16:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190261466] [2023-08-30 23:16:20,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190261466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:20,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:20,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:16:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396472180] [2023-08-30 23:16:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:16:20,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:16:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:16:20,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 231 [2023-08-30 23:16:20,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 23:16:20,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:20,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 231 [2023-08-30 23:16:20,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:20,877 INFO L130 PetriNetUnfolder]: 2075/3089 cut-off events. [2023-08-30 23:16:20,877 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 23:16:20,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6085 conditions, 3089 events. 2075/3089 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16497 event pairs, 518 based on Foata normal form. 0/2932 useless extension candidates. Maximal degree in co-relation 6073. Up to 2098 conditions per place. [2023-08-30 23:16:20,902 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 29 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2023-08-30 23:16:20,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 152 flow [2023-08-30 23:16:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:16:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:16:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 23:16:20,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295815295815296 [2023-08-30 23:16:20,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 23:16:20,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 23:16:20,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:20,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 23:16:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 23:16:20,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 23:16:20,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 23:16:20,940 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 367 transitions. [2023-08-30 23:16:20,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 152 flow [2023-08-30 23:16:20,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 23:16:20,948 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 62 flow [2023-08-30 23:16:20,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-08-30 23:16:20,954 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-30 23:16:20,955 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 62 flow [2023-08-30 23:16:20,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 23:16:20,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:20,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:20,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:16:20,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:20,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2110807643, now seen corresponding path program 1 times [2023-08-30 23:16:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400247815] [2023-08-30 23:16:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:21,437 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 23:16:21,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400247815] [2023-08-30 23:16:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400247815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:21,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:21,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:16:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500210734] [2023-08-30 23:16:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:16:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:16:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:16:21,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 231 [2023-08-30 23:16:21,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 23:16:21,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:21,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 231 [2023-08-30 23:16:21,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:21,840 INFO L130 PetriNetUnfolder]: 2213/3194 cut-off events. [2023-08-30 23:16:21,841 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2023-08-30 23:16:21,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 3194 events. 2213/3194 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15362 event pairs, 723 based on Foata normal form. 24/3205 useless extension candidates. Maximal degree in co-relation 6586. Up to 2835 conditions per place. [2023-08-30 23:16:21,873 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-30 23:16:21,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 168 flow [2023-08-30 23:16:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:16:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:16:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-30 23:16:21,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-30 23:16:21,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-30 23:16:21,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-30 23:16:21,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:21,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-30 23:16:21,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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 23:16:21,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 23:16:21,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 23:16:21,882 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 62 flow. Second operand 3 states and 364 transitions. [2023-08-30 23:16:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 168 flow [2023-08-30 23:16:21,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:21,884 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 77 flow [2023-08-30 23:16:21,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-30 23:16:21,885 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-30 23:16:21,885 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 77 flow [2023-08-30 23:16:21,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 23:16:21,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:21,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:21,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:16:21,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:21,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1010528717, now seen corresponding path program 1 times [2023-08-30 23:16:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:21,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641142584] [2023-08-30 23:16:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:22,847 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 23:16:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641142584] [2023-08-30 23:16:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641142584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:16:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564381781] [2023-08-30 23:16:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:16:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:16:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:16:22,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 231 [2023-08-30 23:16:22,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 23:16:22,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:22,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 231 [2023-08-30 23:16:22,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:23,765 INFO L130 PetriNetUnfolder]: 5912/8387 cut-off events. [2023-08-30 23:16:23,765 INFO L131 PetriNetUnfolder]: For 1032/1032 co-relation queries the response was YES. [2023-08-30 23:16:23,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18449 conditions, 8387 events. 5912/8387 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44621 event pairs, 577 based on Foata normal form. 250/8635 useless extension candidates. Maximal degree in co-relation 18438. Up to 5208 conditions per place. [2023-08-30 23:16:23,813 INFO L137 encePairwiseOnDemand]: 220/231 looper letters, 51 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2023-08-30 23:16:23,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 308 flow [2023-08-30 23:16:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2023-08-30 23:16:23,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010822510822511 [2023-08-30 23:16:23,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2023-08-30 23:16:23,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2023-08-30 23:16:23,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:23,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2023-08-30 23:16:23,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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 23:16:23,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:23,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:23,820 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 77 flow. Second operand 4 states and 463 transitions. [2023-08-30 23:16:23,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 308 flow [2023-08-30 23:16:23,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:23,822 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 190 flow [2023-08-30 23:16:23,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-08-30 23:16:23,824 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-30 23:16:23,826 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 190 flow [2023-08-30 23:16:23,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 23:16:23,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:23,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:16:23,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:23,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1264065504, now seen corresponding path program 1 times [2023-08-30 23:16:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:23,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123405087] [2023-08-30 23:16:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:23,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:24,788 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 23:16:24,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:24,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123405087] [2023-08-30 23:16:24,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123405087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:24,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:16:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983043369] [2023-08-30 23:16:24,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:24,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:16:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:16:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:16:24,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 231 [2023-08-30 23:16:24,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:24,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:24,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 231 [2023-08-30 23:16:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:25,917 INFO L130 PetriNetUnfolder]: 7582/10503 cut-off events. [2023-08-30 23:16:25,917 INFO L131 PetriNetUnfolder]: For 8393/8393 co-relation queries the response was YES. [2023-08-30 23:16:25,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31189 conditions, 10503 events. 7582/10503 cut-off events. For 8393/8393 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 51286 event pairs, 837 based on Foata normal form. 36/10539 useless extension candidates. Maximal degree in co-relation 31174. Up to 6426 conditions per place. [2023-08-30 23:16:26,012 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 61 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2023-08-30 23:16:26,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 82 transitions, 540 flow [2023-08-30 23:16:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-08-30 23:16:26,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49134199134199136 [2023-08-30 23:16:26,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-08-30 23:16:26,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-08-30 23:16:26,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:26,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-08-30 23:16:26,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:26,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:26,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:26,020 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 190 flow. Second operand 4 states and 454 transitions. [2023-08-30 23:16:26,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 82 transitions, 540 flow [2023-08-30 23:16:26,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:16:26,030 INFO L231 Difference]: Finished difference. Result has 48 places, 56 transitions, 396 flow [2023-08-30 23:16:26,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=48, PETRI_TRANSITIONS=56} [2023-08-30 23:16:26,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-30 23:16:26,032 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 56 transitions, 396 flow [2023-08-30 23:16:26,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:26,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:26,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:16:26,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:26,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1232708439, now seen corresponding path program 1 times [2023-08-30 23:16:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791688258] [2023-08-30 23:16:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:26,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:26,721 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 23:16:26,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:26,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791688258] [2023-08-30 23:16:26,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791688258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:26,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:26,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:26,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672846325] [2023-08-30 23:16:26,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:26,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:16:26,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:16:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:16:26,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 231 [2023-08-30 23:16:26,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 56 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:26,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:26,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 231 [2023-08-30 23:16:26,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:28,155 INFO L130 PetriNetUnfolder]: 8898/12719 cut-off events. [2023-08-30 23:16:28,155 INFO L131 PetriNetUnfolder]: For 27172/27216 co-relation queries the response was YES. [2023-08-30 23:16:28,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45648 conditions, 12719 events. 8898/12719 cut-off events. For 27172/27216 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 70301 event pairs, 1529 based on Foata normal form. 202/12917 useless extension candidates. Maximal degree in co-relation 45628. Up to 5706 conditions per place. [2023-08-30 23:16:28,246 INFO L137 encePairwiseOnDemand]: 220/231 looper letters, 65 selfloop transitions, 29 changer transitions 2/98 dead transitions. [2023-08-30 23:16:28,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 98 transitions, 808 flow [2023-08-30 23:16:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2023-08-30 23:16:28,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989177489177489 [2023-08-30 23:16:28,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2023-08-30 23:16:28,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2023-08-30 23:16:28,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:28,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2023-08-30 23:16:28,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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 23:16:28,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:28,254 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:28,254 INFO L175 Difference]: Start difference. First operand has 48 places, 56 transitions, 396 flow. Second operand 4 states and 461 transitions. [2023-08-30 23:16:28,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 98 transitions, 808 flow [2023-08-30 23:16:28,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 808 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:16:28,265 INFO L231 Difference]: Finished difference. Result has 54 places, 70 transitions, 664 flow [2023-08-30 23:16:28,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=664, PETRI_PLACES=54, PETRI_TRANSITIONS=70} [2023-08-30 23:16:28,268 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-30 23:16:28,268 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 70 transitions, 664 flow [2023-08-30 23:16:28,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:16:28,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:28,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:16:28,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:28,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash -529465068, now seen corresponding path program 1 times [2023-08-30 23:16:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:28,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161193444] [2023-08-30 23:16:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:29,031 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 23:16:29,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:29,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161193444] [2023-08-30 23:16:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161193444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:29,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:29,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533161084] [2023-08-30 23:16:29,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:29,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:29,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:29,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 231 [2023-08-30 23:16:29,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 70 transitions, 664 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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 23:16:29,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:29,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 231 [2023-08-30 23:16:29,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:30,478 INFO L130 PetriNetUnfolder]: 9504/13339 cut-off events. [2023-08-30 23:16:30,478 INFO L131 PetriNetUnfolder]: For 47767/47767 co-relation queries the response was YES. [2023-08-30 23:16:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53987 conditions, 13339 events. 9504/13339 cut-off events. For 47767/47767 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 69731 event pairs, 952 based on Foata normal form. 30/13369 useless extension candidates. Maximal degree in co-relation 53962. Up to 10475 conditions per place. [2023-08-30 23:16:30,568 INFO L137 encePairwiseOnDemand]: 222/231 looper letters, 90 selfloop transitions, 34 changer transitions 15/139 dead transitions. [2023-08-30 23:16:30,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 139 transitions, 1524 flow [2023-08-30 23:16:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2023-08-30 23:16:30,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-08-30 23:16:30,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2023-08-30 23:16:30,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2023-08-30 23:16:30,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:30,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2023-08-30 23:16:30,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 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 23:16:30,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:30,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:30,575 INFO L175 Difference]: Start difference. First operand has 54 places, 70 transitions, 664 flow. Second operand 5 states and 567 transitions. [2023-08-30 23:16:30,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 139 transitions, 1524 flow [2023-08-30 23:16:30,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 139 transitions, 1506 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 23:16:30,626 INFO L231 Difference]: Finished difference. Result has 61 places, 87 transitions, 987 flow [2023-08-30 23:16:30,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=987, PETRI_PLACES=61, PETRI_TRANSITIONS=87} [2023-08-30 23:16:30,627 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2023-08-30 23:16:30,627 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 87 transitions, 987 flow [2023-08-30 23:16:30,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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 23:16:30,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:30,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:30,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:16:30,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:30,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -529360753, now seen corresponding path program 1 times [2023-08-30 23:16:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704096370] [2023-08-30 23:16:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:31,129 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 23:16:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704096370] [2023-08-30 23:16:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704096370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:31,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:31,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:31,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596551869] [2023-08-30 23:16:31,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:31,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:31,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:31,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 231 [2023-08-30 23:16:31,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 87 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 23:16:31,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:31,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 231 [2023-08-30 23:16:31,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:32,295 INFO L130 PetriNetUnfolder]: 6945/10381 cut-off events. [2023-08-30 23:16:32,295 INFO L131 PetriNetUnfolder]: For 51753/52317 co-relation queries the response was YES. [2023-08-30 23:16:32,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45979 conditions, 10381 events. 6945/10381 cut-off events. For 51753/52317 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 61686 event pairs, 1275 based on Foata normal form. 283/10495 useless extension candidates. Maximal degree in co-relation 45949. Up to 7739 conditions per place. [2023-08-30 23:16:32,457 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 82 selfloop transitions, 12 changer transitions 0/116 dead transitions. [2023-08-30 23:16:32,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 1399 flow [2023-08-30 23:16:32,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-30 23:16:32,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183982683982684 [2023-08-30 23:16:32,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-30 23:16:32,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-30 23:16:32,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:32,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-30 23:16:32,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 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 23:16:32,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:32,463 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:32,464 INFO L175 Difference]: Start difference. First operand has 61 places, 87 transitions, 987 flow. Second operand 4 states and 479 transitions. [2023-08-30 23:16:32,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 1399 flow [2023-08-30 23:16:32,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 1338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:32,518 INFO L231 Difference]: Finished difference. Result has 63 places, 91 transitions, 1010 flow [2023-08-30 23:16:32,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1010, PETRI_PLACES=63, PETRI_TRANSITIONS=91} [2023-08-30 23:16:32,519 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2023-08-30 23:16:32,519 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 91 transitions, 1010 flow [2023-08-30 23:16:32,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 23:16:32,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:32,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:16:32,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:32,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:32,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1865218161, now seen corresponding path program 1 times [2023-08-30 23:16:32,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:32,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697536527] [2023-08-30 23:16:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:33,019 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 23:16:33,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:33,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697536527] [2023-08-30 23:16:33,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697536527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:33,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:33,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:33,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439807714] [2023-08-30 23:16:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:33,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:33,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:33,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:33,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 231 [2023-08-30 23:16:33,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 91 transitions, 1010 flow. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 23:16:33,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:33,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 231 [2023-08-30 23:16:33,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:34,324 INFO L130 PetriNetUnfolder]: 7094/10621 cut-off events. [2023-08-30 23:16:34,324 INFO L131 PetriNetUnfolder]: For 51815/52335 co-relation queries the response was YES. [2023-08-30 23:16:34,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47876 conditions, 10621 events. 7094/10621 cut-off events. For 51815/52335 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 63526 event pairs, 815 based on Foata normal form. 283/10735 useless extension candidates. Maximal degree in co-relation 47845. Up to 7187 conditions per place. [2023-08-30 23:16:34,406 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 77 selfloop transitions, 24 changer transitions 0/123 dead transitions. [2023-08-30 23:16:34,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 123 transitions, 1479 flow [2023-08-30 23:16:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 485 transitions. [2023-08-30 23:16:34,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248917748917749 [2023-08-30 23:16:34,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 485 transitions. [2023-08-30 23:16:34,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 485 transitions. [2023-08-30 23:16:34,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:34,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 485 transitions. [2023-08-30 23:16:34,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 23:16:34,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:34,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:34,413 INFO L175 Difference]: Start difference. First operand has 63 places, 91 transitions, 1010 flow. Second operand 4 states and 485 transitions. [2023-08-30 23:16:34,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 123 transitions, 1479 flow [2023-08-30 23:16:34,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 123 transitions, 1462 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:34,483 INFO L231 Difference]: Finished difference. Result has 65 places, 99 transitions, 1152 flow [2023-08-30 23:16:34,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1152, PETRI_PLACES=65, PETRI_TRANSITIONS=99} [2023-08-30 23:16:34,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2023-08-30 23:16:34,484 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 99 transitions, 1152 flow [2023-08-30 23:16:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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 23:16:34,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:34,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:16:34,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:34,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1861915731, now seen corresponding path program 2 times [2023-08-30 23:16:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8255417] [2023-08-30 23:16:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:35,065 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 23:16:35,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8255417] [2023-08-30 23:16:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8255417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:35,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:16:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505296008] [2023-08-30 23:16:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:35,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:16:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:16:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:16:35,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 231 [2023-08-30 23:16:35,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 99 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 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 23:16:35,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:35,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 231 [2023-08-30 23:16:35,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:36,340 INFO L130 PetriNetUnfolder]: 6981/10452 cut-off events. [2023-08-30 23:16:36,340 INFO L131 PetriNetUnfolder]: For 56143/56632 co-relation queries the response was YES. [2023-08-30 23:16:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48543 conditions, 10452 events. 6981/10452 cut-off events. For 56143/56632 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 62258 event pairs, 838 based on Foata normal form. 254/10537 useless extension candidates. Maximal degree in co-relation 48511. Up to 7139 conditions per place. [2023-08-30 23:16:36,431 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 76 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2023-08-30 23:16:36,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 1451 flow [2023-08-30 23:16:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2023-08-30 23:16:36,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216450216450217 [2023-08-30 23:16:36,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2023-08-30 23:16:36,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2023-08-30 23:16:36,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:36,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2023-08-30 23:16:36,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 23:16:36,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:36,437 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:36,437 INFO L175 Difference]: Start difference. First operand has 65 places, 99 transitions, 1152 flow. Second operand 4 states and 482 transitions. [2023-08-30 23:16:36,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 1451 flow [2023-08-30 23:16:36,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 1433 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:36,504 INFO L231 Difference]: Finished difference. Result has 68 places, 99 transitions, 1190 flow [2023-08-30 23:16:36,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1190, PETRI_PLACES=68, PETRI_TRANSITIONS=99} [2023-08-30 23:16:36,504 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2023-08-30 23:16:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 99 transitions, 1190 flow [2023-08-30 23:16:36,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 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 23:16:36,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:36,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:16:36,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:36,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1865219215, now seen corresponding path program 1 times [2023-08-30 23:16:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508470493] [2023-08-30 23:16:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:36,982 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 23:16:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:36,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508470493] [2023-08-30 23:16:36,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508470493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:36,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:36,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608180796] [2023-08-30 23:16:36,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:36,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:36,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 231 [2023-08-30 23:16:36,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 99 transitions, 1190 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 23:16:36,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:36,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 231 [2023-08-30 23:16:36,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:38,231 INFO L130 PetriNetUnfolder]: 8317/12198 cut-off events. [2023-08-30 23:16:38,232 INFO L131 PetriNetUnfolder]: For 74278/75393 co-relation queries the response was YES. [2023-08-30 23:16:38,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58034 conditions, 12198 events. 8317/12198 cut-off events. For 74278/75393 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 73654 event pairs, 3507 based on Foata normal form. 557/12542 useless extension candidates. Maximal degree in co-relation 58000. Up to 9114 conditions per place. [2023-08-30 23:16:38,337 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 87 selfloop transitions, 31 changer transitions 0/140 dead transitions. [2023-08-30 23:16:38,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 1826 flow [2023-08-30 23:16:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 584 transitions. [2023-08-30 23:16:38,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056277056277056 [2023-08-30 23:16:38,342 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 584 transitions. [2023-08-30 23:16:38,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 584 transitions. [2023-08-30 23:16:38,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:38,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 584 transitions. [2023-08-30 23:16:38,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 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 23:16:38,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:38,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:38,350 INFO L175 Difference]: Start difference. First operand has 68 places, 99 transitions, 1190 flow. Second operand 5 states and 584 transitions. [2023-08-30 23:16:38,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 1826 flow [2023-08-30 23:16:38,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 140 transitions, 1800 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:38,430 INFO L231 Difference]: Finished difference. Result has 72 places, 120 transitions, 1561 flow [2023-08-30 23:16:38,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1561, PETRI_PLACES=72, PETRI_TRANSITIONS=120} [2023-08-30 23:16:38,432 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2023-08-30 23:16:38,432 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 120 transitions, 1561 flow [2023-08-30 23:16:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 23:16:38,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:38,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:38,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:16:38,434 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:38,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1863060685, now seen corresponding path program 2 times [2023-08-30 23:16:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167746599] [2023-08-30 23:16:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:38,910 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 23:16:38,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:38,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167746599] [2023-08-30 23:16:38,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167746599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:38,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:16:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414290724] [2023-08-30 23:16:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:38,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:16:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:16:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:16:38,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 231 [2023-08-30 23:16:38,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 120 transitions, 1561 flow. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 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 23:16:38,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:38,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 231 [2023-08-30 23:16:38,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:40,670 INFO L130 PetriNetUnfolder]: 12166/18057 cut-off events. [2023-08-30 23:16:40,671 INFO L131 PetriNetUnfolder]: For 130967/132486 co-relation queries the response was YES. [2023-08-30 23:16:40,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90581 conditions, 18057 events. 12166/18057 cut-off events. For 130967/132486 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 117985 event pairs, 1782 based on Foata normal form. 810/18463 useless extension candidates. Maximal degree in co-relation 90545. Up to 7595 conditions per place. [2023-08-30 23:16:40,814 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 124 selfloop transitions, 50 changer transitions 0/196 dead transitions. [2023-08-30 23:16:40,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 196 transitions, 2666 flow [2023-08-30 23:16:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:16:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:16:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 716 transitions. [2023-08-30 23:16:40,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165945165945166 [2023-08-30 23:16:40,817 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 716 transitions. [2023-08-30 23:16:40,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 716 transitions. [2023-08-30 23:16:40,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:40,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 716 transitions. [2023-08-30 23:16:40,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 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 23:16:40,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 23:16:40,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 23:16:40,822 INFO L175 Difference]: Start difference. First operand has 72 places, 120 transitions, 1561 flow. Second operand 6 states and 716 transitions. [2023-08-30 23:16:40,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 196 transitions, 2666 flow [2023-08-30 23:16:41,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 196 transitions, 2637 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:41,033 INFO L231 Difference]: Finished difference. Result has 80 places, 137 transitions, 1976 flow [2023-08-30 23:16:41,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1976, PETRI_PLACES=80, PETRI_TRANSITIONS=137} [2023-08-30 23:16:41,033 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2023-08-30 23:16:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 137 transitions, 1976 flow [2023-08-30 23:16:41,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 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 23:16:41,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:41,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:16:41,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:41,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1865251765, now seen corresponding path program 3 times [2023-08-30 23:16:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373631248] [2023-08-30 23:16:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:41,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:41,625 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 23:16:41,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:41,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373631248] [2023-08-30 23:16:41,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373631248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:41,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:41,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:41,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298547872] [2023-08-30 23:16:41,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:41,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:16:41,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:16:41,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:16:41,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 231 [2023-08-30 23:16:41,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 137 transitions, 1976 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 23:16:41,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:41,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 231 [2023-08-30 23:16:41,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:43,243 INFO L130 PetriNetUnfolder]: 12038/17915 cut-off events. [2023-08-30 23:16:43,243 INFO L131 PetriNetUnfolder]: For 148139/149670 co-relation queries the response was YES. [2023-08-30 23:16:43,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94515 conditions, 17915 events. 12038/17915 cut-off events. For 148139/149670 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 117789 event pairs, 2667 based on Foata normal form. 858/18445 useless extension candidates. Maximal degree in co-relation 94474. Up to 12230 conditions per place. [2023-08-30 23:16:43,416 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 94 selfloop transitions, 43 changer transitions 0/159 dead transitions. [2023-08-30 23:16:43,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 159 transitions, 2405 flow [2023-08-30 23:16:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-30 23:16:43,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038961038961038 [2023-08-30 23:16:43,419 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-30 23:16:43,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-30 23:16:43,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:43,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-30 23:16:43,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 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 23:16:43,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:43,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:43,423 INFO L175 Difference]: Start difference. First operand has 80 places, 137 transitions, 1976 flow. Second operand 5 states and 582 transitions. [2023-08-30 23:16:43,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 159 transitions, 2405 flow [2023-08-30 23:16:43,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 159 transitions, 2384 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:43,674 INFO L231 Difference]: Finished difference. Result has 84 places, 142 transitions, 2134 flow [2023-08-30 23:16:43,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2134, PETRI_PLACES=84, PETRI_TRANSITIONS=142} [2023-08-30 23:16:43,675 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2023-08-30 23:16:43,675 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 142 transitions, 2134 flow [2023-08-30 23:16:43,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 23:16:43,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:43,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:43,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:16:43,678 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:43,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:43,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1278413395, now seen corresponding path program 4 times [2023-08-30 23:16:43,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:43,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529644372] [2023-08-30 23:16:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:44,426 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 23:16:44,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:44,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529644372] [2023-08-30 23:16:44,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529644372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:44,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:44,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:16:44,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210972912] [2023-08-30 23:16:44,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:16:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:16:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:16:44,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 231 [2023-08-30 23:16:44,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 142 transitions, 2134 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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 23:16:44,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:44,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 231 [2023-08-30 23:16:44,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:46,536 INFO L130 PetriNetUnfolder]: 16182/22959 cut-off events. [2023-08-30 23:16:46,536 INFO L131 PetriNetUnfolder]: For 192681/192681 co-relation queries the response was YES. [2023-08-30 23:16:46,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121453 conditions, 22959 events. 16182/22959 cut-off events. For 192681/192681 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 136030 event pairs, 2022 based on Foata normal form. 42/23001 useless extension candidates. Maximal degree in co-relation 121410. Up to 13146 conditions per place. [2023-08-30 23:16:46,690 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 107 selfloop transitions, 70 changer transitions 20/197 dead transitions. [2023-08-30 23:16:46,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 197 transitions, 3025 flow [2023-08-30 23:16:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2023-08-30 23:16:46,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753246753246753 [2023-08-30 23:16:46,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2023-08-30 23:16:46,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2023-08-30 23:16:46,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:46,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2023-08-30 23:16:46,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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 23:16:46,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:46,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:46,697 INFO L175 Difference]: Start difference. First operand has 84 places, 142 transitions, 2134 flow. Second operand 5 states and 549 transitions. [2023-08-30 23:16:46,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 197 transitions, 3025 flow [2023-08-30 23:16:47,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 197 transitions, 2975 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 23:16:47,118 INFO L231 Difference]: Finished difference. Result has 88 places, 146 transitions, 2349 flow [2023-08-30 23:16:47,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2349, PETRI_PLACES=88, PETRI_TRANSITIONS=146} [2023-08-30 23:16:47,119 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2023-08-30 23:16:47,119 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 146 transitions, 2349 flow [2023-08-30 23:16:47,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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 23:16:47,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:47,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:47,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 23:16:47,120 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:47,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1426217761, now seen corresponding path program 5 times [2023-08-30 23:16:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376714688] [2023-08-30 23:16:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:47,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:47,436 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 23:16:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376714688] [2023-08-30 23:16:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376714688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:47,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:16:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958031289] [2023-08-30 23:16:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:47,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:16:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:16:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:16:47,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 231 [2023-08-30 23:16:47,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 146 transitions, 2349 flow. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 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 23:16:47,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:47,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 231 [2023-08-30 23:16:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:49,445 INFO L130 PetriNetUnfolder]: 12152/18050 cut-off events. [2023-08-30 23:16:49,445 INFO L131 PetriNetUnfolder]: For 194686/197009 co-relation queries the response was YES. [2023-08-30 23:16:49,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107557 conditions, 18050 events. 12152/18050 cut-off events. For 194686/197009 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 118287 event pairs, 5375 based on Foata normal form. 1292/19079 useless extension candidates. Maximal degree in co-relation 107512. Up to 13323 conditions per place. [2023-08-30 23:16:49,607 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 100 selfloop transitions, 42 changer transitions 0/168 dead transitions. [2023-08-30 23:16:49,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 168 transitions, 2904 flow [2023-08-30 23:16:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:16:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:16:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 467 transitions. [2023-08-30 23:16:49,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054112554112554 [2023-08-30 23:16:49,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 467 transitions. [2023-08-30 23:16:49,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 467 transitions. [2023-08-30 23:16:49,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:49,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 467 transitions. [2023-08-30 23:16:49,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 23:16:49,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:49,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 23:16:49,612 INFO L175 Difference]: Start difference. First operand has 88 places, 146 transitions, 2349 flow. Second operand 4 states and 467 transitions. [2023-08-30 23:16:49,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 168 transitions, 2904 flow [2023-08-30 23:16:49,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 168 transitions, 2827 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-30 23:16:49,994 INFO L231 Difference]: Finished difference. Result has 91 places, 152 transitions, 2537 flow [2023-08-30 23:16:49,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2537, PETRI_PLACES=91, PETRI_TRANSITIONS=152} [2023-08-30 23:16:49,995 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2023-08-30 23:16:49,995 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 152 transitions, 2537 flow [2023-08-30 23:16:49,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 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 23:16:49,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:49,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:49,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 23:16:49,996 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:49,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 417826598, now seen corresponding path program 1 times [2023-08-30 23:16:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362170356] [2023-08-30 23:16:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:50,701 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 23:16:50,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:50,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362170356] [2023-08-30 23:16:50,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362170356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:50,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:50,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:16:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519859801] [2023-08-30 23:16:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:50,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:16:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:16:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:16:50,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 231 [2023-08-30 23:16:50,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 152 transitions, 2537 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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 23:16:50,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:50,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 231 [2023-08-30 23:16:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:53,110 INFO L130 PetriNetUnfolder]: 12839/19083 cut-off events. [2023-08-30 23:16:53,111 INFO L131 PetriNetUnfolder]: For 218775/221508 co-relation queries the response was YES. [2023-08-30 23:16:53,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116811 conditions, 19083 events. 12839/19083 cut-off events. For 218775/221508 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 125856 event pairs, 1925 based on Foata normal form. 1086/19978 useless extension candidates. Maximal degree in co-relation 116764. Up to 11865 conditions per place. [2023-08-30 23:16:53,338 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 105 selfloop transitions, 65 changer transitions 0/196 dead transitions. [2023-08-30 23:16:53,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 196 transitions, 3415 flow [2023-08-30 23:16:53,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 583 transitions. [2023-08-30 23:16:53,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2023-08-30 23:16:53,341 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 583 transitions. [2023-08-30 23:16:53,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 583 transitions. [2023-08-30 23:16:53,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:53,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 583 transitions. [2023-08-30 23:16:53,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 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 23:16:53,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:53,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:53,345 INFO L175 Difference]: Start difference. First operand has 91 places, 152 transitions, 2537 flow. Second operand 5 states and 583 transitions. [2023-08-30 23:16:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 196 transitions, 3415 flow [2023-08-30 23:16:53,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 196 transitions, 3324 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 23:16:53,845 INFO L231 Difference]: Finished difference. Result has 93 places, 163 transitions, 2906 flow [2023-08-30 23:16:53,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2906, PETRI_PLACES=93, PETRI_TRANSITIONS=163} [2023-08-30 23:16:53,846 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2023-08-30 23:16:53,847 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 163 transitions, 2906 flow [2023-08-30 23:16:53,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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 23:16:53,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:53,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 23:16:53,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:53,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1885822654, now seen corresponding path program 2 times [2023-08-30 23:16:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618499447] [2023-08-30 23:16:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:54,835 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 23:16:54,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:54,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618499447] [2023-08-30 23:16:54,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618499447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:16:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769707442] [2023-08-30 23:16:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:16:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:16:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:16:54,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 231 [2023-08-30 23:16:54,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 163 transitions, 2906 flow. Second operand has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 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 23:16:54,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:54,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 231 [2023-08-30 23:16:54,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:57,225 INFO L130 PetriNetUnfolder]: 12436/18490 cut-off events. [2023-08-30 23:16:57,225 INFO L131 PetriNetUnfolder]: For 205343/207958 co-relation queries the response was YES. [2023-08-30 23:16:57,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113239 conditions, 18490 events. 12436/18490 cut-off events. For 205343/207958 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 121472 event pairs, 1089 based on Foata normal form. 1573/19967 useless extension candidates. Maximal degree in co-relation 113192. Up to 7909 conditions per place. [2023-08-30 23:16:57,398 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 134 selfloop transitions, 58 changer transitions 0/218 dead transitions. [2023-08-30 23:16:57,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 218 transitions, 3774 flow [2023-08-30 23:16:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:16:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:16:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 923 transitions. [2023-08-30 23:16:57,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49945887445887444 [2023-08-30 23:16:57,401 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 923 transitions. [2023-08-30 23:16:57,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 923 transitions. [2023-08-30 23:16:57,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:57,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 923 transitions. [2023-08-30 23:16:57,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 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 23:16:57,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 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 23:16:57,408 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 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 23:16:57,408 INFO L175 Difference]: Start difference. First operand has 93 places, 163 transitions, 2906 flow. Second operand 8 states and 923 transitions. [2023-08-30 23:16:57,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 218 transitions, 3774 flow [2023-08-30 23:16:57,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 218 transitions, 3683 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 23:16:57,723 INFO L231 Difference]: Finished difference. Result has 98 places, 165 transitions, 3019 flow [2023-08-30 23:16:57,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3019, PETRI_PLACES=98, PETRI_TRANSITIONS=165} [2023-08-30 23:16:57,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2023-08-30 23:16:57,724 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 165 transitions, 3019 flow [2023-08-30 23:16:57,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 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 23:16:57,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:16:57,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:16:57,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 23:16:57,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:16:57,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:16:57,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1917341780, now seen corresponding path program 1 times [2023-08-30 23:16:57,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:16:57,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468490883] [2023-08-30 23:16:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:16:57,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:16:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:16:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:16:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:16:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468490883] [2023-08-30 23:16:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468490883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:16:58,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:16:58,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:16:58,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282561932] [2023-08-30 23:16:58,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:16:58,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:16:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:16:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:16:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:16:58,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 231 [2023-08-30 23:16:58,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 165 transitions, 3019 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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 23:16:58,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:16:58,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 231 [2023-08-30 23:16:58,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:16:59,853 INFO L130 PetriNetUnfolder]: 9794/14948 cut-off events. [2023-08-30 23:16:59,853 INFO L131 PetriNetUnfolder]: For 282329/288240 co-relation queries the response was YES. [2023-08-30 23:16:59,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93166 conditions, 14948 events. 9794/14948 cut-off events. For 282329/288240 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 105112 event pairs, 1474 based on Foata normal form. 4713/19457 useless extension candidates. Maximal degree in co-relation 93118. Up to 9787 conditions per place. [2023-08-30 23:16:59,975 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 252 selfloop transitions, 9 changer transitions 56/351 dead transitions. [2023-08-30 23:16:59,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 351 transitions, 7099 flow [2023-08-30 23:16:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:16:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:16:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-08-30 23:16:59,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108225108225108 [2023-08-30 23:16:59,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-08-30 23:16:59,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-08-30 23:16:59,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:16:59,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-08-30 23:16:59,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 23:16:59,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:59,979 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 23:16:59,980 INFO L175 Difference]: Start difference. First operand has 98 places, 165 transitions, 3019 flow. Second operand 5 states and 590 transitions. [2023-08-30 23:16:59,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 351 transitions, 7099 flow [2023-08-30 23:17:00,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 351 transitions, 6931 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-08-30 23:17:00,153 INFO L231 Difference]: Finished difference. Result has 101 places, 168 transitions, 2979 flow [2023-08-30 23:17:00,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2979, PETRI_PLACES=101, PETRI_TRANSITIONS=168} [2023-08-30 23:17:00,153 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2023-08-30 23:17:00,153 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 168 transitions, 2979 flow [2023-08-30 23:17:00,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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 23:17:00,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:00,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:00,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 23:17:00,154 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:17:00,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1119443368, now seen corresponding path program 1 times [2023-08-30 23:17:00,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:00,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028520123] [2023-08-30 23:17:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:00,334 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 23:17:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028520123] [2023-08-30 23:17:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028520123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:00,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:00,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:17:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664741468] [2023-08-30 23:17:00,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:00,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:17:00,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:17:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:17:00,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 231 [2023-08-30 23:17:00,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 168 transitions, 2979 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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 23:17:00,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:00,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 231 [2023-08-30 23:17:00,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:01,823 INFO L130 PetriNetUnfolder]: 7401/11740 cut-off events. [2023-08-30 23:17:01,823 INFO L131 PetriNetUnfolder]: For 238450/244595 co-relation queries the response was YES. [2023-08-30 23:17:01,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79960 conditions, 11740 events. 7401/11740 cut-off events. For 238450/244595 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 85275 event pairs, 370 based on Foata normal form. 4491/16070 useless extension candidates. Maximal degree in co-relation 79909. Up to 4857 conditions per place. [2023-08-30 23:17:01,884 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 327 selfloop transitions, 18 changer transitions 59/436 dead transitions. [2023-08-30 23:17:01,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 436 transitions, 8725 flow [2023-08-30 23:17:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:17:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:17:01,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 826 transitions. [2023-08-30 23:17:01,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108225108225108 [2023-08-30 23:17:01,887 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 826 transitions. [2023-08-30 23:17:01,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 826 transitions. [2023-08-30 23:17:01,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:01,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 826 transitions. [2023-08-30 23:17:01,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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 23:17:01,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 23:17:01,892 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 23:17:01,892 INFO L175 Difference]: Start difference. First operand has 101 places, 168 transitions, 2979 flow. Second operand 7 states and 826 transitions. [2023-08-30 23:17:01,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 436 transitions, 8725 flow [2023-08-30 23:17:02,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 436 transitions, 8720 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:17:02,003 INFO L231 Difference]: Finished difference. Result has 109 places, 159 transitions, 2738 flow [2023-08-30 23:17:02,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2738, PETRI_PLACES=109, PETRI_TRANSITIONS=159} [2023-08-30 23:17:02,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2023-08-30 23:17:02,004 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 159 transitions, 2738 flow [2023-08-30 23:17:02,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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 23:17:02,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:02,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 23:17:02,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:17:02,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash -829410904, now seen corresponding path program 1 times [2023-08-30 23:17:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:02,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283870577] [2023-08-30 23:17:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:02,547 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 23:17:02,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283870577] [2023-08-30 23:17:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283870577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:17:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295084356] [2023-08-30 23:17:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:17:02,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:17:02,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:17:02,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 231 [2023-08-30 23:17:02,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 159 transitions, 2738 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 23:17:02,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:02,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 231 [2023-08-30 23:17:02,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:05,257 INFO L130 PetriNetUnfolder]: 13935/21806 cut-off events. [2023-08-30 23:17:05,257 INFO L131 PetriNetUnfolder]: For 323199/324806 co-relation queries the response was YES. [2023-08-30 23:17:05,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162586 conditions, 21806 events. 13935/21806 cut-off events. For 323199/324806 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 159305 event pairs, 888 based on Foata normal form. 1380/23160 useless extension candidates. Maximal degree in co-relation 162531. Up to 9114 conditions per place. [2023-08-30 23:17:05,480 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 109 selfloop transitions, 41 changer transitions 201/354 dead transitions. [2023-08-30 23:17:05,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 354 transitions, 6149 flow [2023-08-30 23:17:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:17:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:17:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2023-08-30 23:17:05,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48917748917748916 [2023-08-30 23:17:05,483 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2023-08-30 23:17:05,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2023-08-30 23:17:05,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:05,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2023-08-30 23:17:05,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 23:17:05,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 23:17:05,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 23:17:05,499 INFO L175 Difference]: Start difference. First operand has 109 places, 159 transitions, 2738 flow. Second operand 6 states and 678 transitions. [2023-08-30 23:17:05,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 354 transitions, 6149 flow [2023-08-30 23:17:07,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 354 transitions, 5934 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-08-30 23:17:07,310 INFO L231 Difference]: Finished difference. Result has 113 places, 104 transitions, 1836 flow [2023-08-30 23:17:07,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1836, PETRI_PLACES=113, PETRI_TRANSITIONS=104} [2023-08-30 23:17:07,310 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2023-08-30 23:17:07,310 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 104 transitions, 1836 flow [2023-08-30 23:17:07,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 23:17:07,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:07,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 23:17:07,311 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:17:07,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 716987511, now seen corresponding path program 1 times [2023-08-30 23:17:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732609641] [2023-08-30 23:17:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:07,479 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 23:17:07,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732609641] [2023-08-30 23:17:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732609641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:07,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:07,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:17:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594644805] [2023-08-30 23:17:07,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:17:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:17:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:17:07,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 231 [2023-08-30 23:17:07,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 104 transitions, 1836 flow. Second operand has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 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 23:17:07,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:07,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 231 [2023-08-30 23:17:07,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:08,125 INFO L130 PetriNetUnfolder]: 2229/3906 cut-off events. [2023-08-30 23:17:08,125 INFO L131 PetriNetUnfolder]: For 87265/87896 co-relation queries the response was YES. [2023-08-30 23:17:08,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 3906 events. 2229/3906 cut-off events. For 87265/87896 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26071 event pairs, 123 based on Foata normal form. 947/4797 useless extension candidates. Maximal degree in co-relation 26109. Up to 1477 conditions per place. [2023-08-30 23:17:08,150 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 157 selfloop transitions, 17 changer transitions 58/250 dead transitions. [2023-08-30 23:17:08,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 250 transitions, 4976 flow [2023-08-30 23:17:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:17:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:17:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-08-30 23:17:08,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083487940630798 [2023-08-30 23:17:08,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-08-30 23:17:08,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-08-30 23:17:08,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:08,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-08-30 23:17:08,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 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 23:17:08,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 23:17:08,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 23:17:08,157 INFO L175 Difference]: Start difference. First operand has 113 places, 104 transitions, 1836 flow. Second operand 7 states and 822 transitions. [2023-08-30 23:17:08,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 250 transitions, 4976 flow [2023-08-30 23:17:08,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 250 transitions, 4516 flow, removed 47 selfloop flow, removed 17 redundant places. [2023-08-30 23:17:08,227 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 1520 flow [2023-08-30 23:17:08,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1520, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2023-08-30 23:17:08,227 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2023-08-30 23:17:08,227 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 1520 flow [2023-08-30 23:17:08,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 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 23:17:08,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:08,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 23:17:08,228 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:17:08,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 137232484, now seen corresponding path program 1 times [2023-08-30 23:17:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448289092] [2023-08-30 23:17:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:08,379 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 23:17:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448289092] [2023-08-30 23:17:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448289092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:08,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:17:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107072946] [2023-08-30 23:17:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:08,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:17:08,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:17:08,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:17:08,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 231 [2023-08-30 23:17:08,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 1520 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 23:17:08,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:08,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 231 [2023-08-30 23:17:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:08,857 INFO L130 PetriNetUnfolder]: 2683/4933 cut-off events. [2023-08-30 23:17:08,857 INFO L131 PetriNetUnfolder]: For 57259/57537 co-relation queries the response was YES. [2023-08-30 23:17:08,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33696 conditions, 4933 events. 2683/4933 cut-off events. For 57259/57537 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 35354 event pairs, 653 based on Foata normal form. 238/5128 useless extension candidates. Maximal degree in co-relation 33647. Up to 2498 conditions per place. [2023-08-30 23:17:08,886 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 93 selfloop transitions, 4 changer transitions 33/141 dead transitions. [2023-08-30 23:17:08,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 141 transitions, 2235 flow [2023-08-30 23:17:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:17:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:17:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-30 23:17:08,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-30 23:17:08,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-30 23:17:08,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-30 23:17:08,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:08,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-30 23:17:08,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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 23:17:08,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 23:17:08,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 23:17:08,890 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 1520 flow. Second operand 3 states and 364 transitions. [2023-08-30 23:17:08,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 141 transitions, 2235 flow [2023-08-30 23:17:09,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 141 transitions, 2079 flow, removed 63 selfloop flow, removed 5 redundant places. [2023-08-30 23:17:09,153 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 1307 flow [2023-08-30 23:17:09,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1307, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2023-08-30 23:17:09,153 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2023-08-30 23:17:09,154 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 1307 flow [2023-08-30 23:17:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 23:17:09,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:09,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 23:17:09,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:17:09,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2019433308, now seen corresponding path program 1 times [2023-08-30 23:17:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:09,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407651377] [2023-08-30 23:17:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:17:09,519 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 23:17:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:17:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407651377] [2023-08-30 23:17:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407651377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:17:09,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:17:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:17:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644280529] [2023-08-30 23:17:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:17:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:17:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:17:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:17:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:17:09,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 231 [2023-08-30 23:17:09,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 1307 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 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 23:17:09,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:17:09,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 231 [2023-08-30 23:17:09,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:17:09,937 INFO L130 PetriNetUnfolder]: 1718/3269 cut-off events. [2023-08-30 23:17:09,937 INFO L131 PetriNetUnfolder]: For 41571/42041 co-relation queries the response was YES. [2023-08-30 23:17:09,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20696 conditions, 3269 events. 1718/3269 cut-off events. For 41571/42041 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 23475 event pairs, 108 based on Foata normal form. 502/3735 useless extension candidates. Maximal degree in co-relation 20648. Up to 918 conditions per place. [2023-08-30 23:17:09,952 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 53 selfloop transitions, 17 changer transitions 143/218 dead transitions. [2023-08-30 23:17:09,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 218 transitions, 3980 flow [2023-08-30 23:17:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:17:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:17:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2023-08-30 23:17:09,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-08-30 23:17:09,955 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2023-08-30 23:17:09,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2023-08-30 23:17:09,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:17:09,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2023-08-30 23:17:09,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 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 23:17:09,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 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 23:17:09,960 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 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 23:17:09,960 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 1307 flow. Second operand 9 states and 1029 transitions. [2023-08-30 23:17:09,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 218 transitions, 3980 flow [2023-08-30 23:17:10,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 218 transitions, 3720 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-30 23:17:10,042 INFO L231 Difference]: Finished difference. Result has 101 places, 46 transitions, 514 flow [2023-08-30 23:17:10,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=101, PETRI_TRANSITIONS=46} [2023-08-30 23:17:10,042 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2023-08-30 23:17:10,042 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 46 transitions, 514 flow [2023-08-30 23:17:10,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 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 23:17:10,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:17:10,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:10,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 23:17:10,043 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:17:10,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:17:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1695422395, now seen corresponding path program 1 times [2023-08-30 23:17:10,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:17:10,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715041082] [2023-08-30 23:17:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:17:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:17:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:17:10,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:17:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:17:10,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:17:10,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:17:10,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 23:17:10,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 23:17:10,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 23:17:10,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-30 23:17:10,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-30 23:17:10,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-30 23:17:10,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 23:17:10,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 23:17:10,131 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:17:10,136 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:17:10,137 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:17:10,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:17:10 BasicIcfg [2023-08-30 23:17:10,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:17:10,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:17:10,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:17:10,203 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:17:10,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:16:14" (3/4) ... [2023-08-30 23:17:10,209 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:17:10,301 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:17:10,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:17:10,302 INFO L158 Benchmark]: Toolchain (without parser) took 57104.09ms. Allocated memory was 71.3MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 46.8MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-08-30 23:17:10,302 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 53.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:17:10,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.51ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 40.5MB in the end (delta: 6.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-08-30 23:17:10,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.91ms. Allocated memory is still 71.3MB. Free memory was 40.5MB in the beginning and 37.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:17:10,303 INFO L158 Benchmark]: Boogie Preprocessor took 56.76ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 35.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:17:10,304 INFO L158 Benchmark]: RCFGBuilder took 776.14ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 45.2MB in the end (delta: -9.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-08-30 23:17:10,304 INFO L158 Benchmark]: TraceAbstraction took 55529.50ms. Allocated memory was 71.3MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 44.4MB in the beginning and 4.4GB in the end (delta: -4.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-08-30 23:17:10,304 INFO L158 Benchmark]: Witness Printer took 99.12ms. Allocated memory is still 5.6GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 23:17:10,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 53.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.51ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 40.5MB in the end (delta: 6.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.91ms. Allocated memory is still 71.3MB. Free memory was 40.5MB in the beginning and 37.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.76ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 35.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 776.14ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 45.2MB in the end (delta: -9.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * TraceAbstraction took 55529.50ms. Allocated memory was 71.3MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 44.4MB in the beginning and 4.4GB in the end (delta: -4.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 99.12ms. Allocated memory is still 5.6GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 132 PlacesBefore, 40 PlacesAfterwards, 121 TransitionsBefore, 27 TransitionsAfterwards, 2736 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 106 TotalNumberOfCompositions, 6414 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3451, independent: 3280, independent conditional: 0, independent unconditional: 3280, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1508, independent: 1454, independent conditional: 0, independent unconditional: 1454, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3451, independent: 1826, independent conditional: 0, independent unconditional: 1826, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 1508, unknown conditional: 0, unknown unconditional: 1508] , Statistics on independence cache: Total cache size (in pairs): 125, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int a = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L720] 0 int y = 0; [L722] 0 int z = 0; [L723] 0 _Bool z$flush_delayed; [L724] 0 int z$mem_tmp; [L725] 0 _Bool z$r_buff0_thd0; [L726] 0 _Bool z$r_buff0_thd1; [L727] 0 _Bool z$r_buff0_thd2; [L728] 0 _Bool z$r_buff0_thd3; [L729] 0 _Bool z$r_buff0_thd4; [L730] 0 _Bool z$r_buff1_thd0; [L731] 0 _Bool z$r_buff1_thd1; [L732] 0 _Bool z$r_buff1_thd2; [L733] 0 _Bool z$r_buff1_thd3; [L734] 0 _Bool z$r_buff1_thd4; [L735] 0 _Bool z$read_delayed; [L736] 0 int *z$read_delayed_var; [L737] 0 int z$w_buff0; [L738] 0 _Bool z$w_buff0_used; [L739] 0 int z$w_buff1; [L740] 0 _Bool z$w_buff1_used; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1517; [L835] FCALL, FORK 0 pthread_create(&t1517, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1517, ((void *)0), P0, ((void *)0))=-3, t1517={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L836] 0 pthread_t t1518; [L837] FCALL, FORK 0 pthread_create(&t1518, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1518, ((void *)0), P1, ((void *)0))=-2, t1517={5:0}, t1518={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L838] 0 pthread_t t1519; [L839] FCALL, FORK 0 pthread_create(&t1519, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1519, ((void *)0), P2, ((void *)0))=-1, t1517={5:0}, t1518={6:0}, t1519={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L840] 0 pthread_t t1520; [L841] FCALL, FORK 0 pthread_create(&t1520, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1520, ((void *)0), P3, ((void *)0))=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L796] 4 z$w_buff1 = z$w_buff0 [L797] 4 z$w_buff0 = 2 [L798] 4 z$w_buff1_used = z$w_buff0_used [L799] 4 z$w_buff0_used = (_Bool)1 [L800] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L800] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L801] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L802] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L803] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L804] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L805] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L806] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L809] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L746] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L749] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L761] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L764] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L776] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L779] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L812] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L815] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L782] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L783] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L784] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L785] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L786] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L789] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L791] 3 return 0; [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L819] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L821] 4 return 0; [L843] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L845] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L845] RET 0 assume_abort_if_not(main$tmp_guard0) [L847] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L848] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L849] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L850] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L851] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L854] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L855] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L856] 0 z$flush_delayed = weak$$choice2 [L857] 0 z$mem_tmp = z [L858] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 0) [L866] 0 z = z$flush_delayed ? z$mem_tmp : z [L867] 0 z$flush_delayed = (_Bool)0 [L869] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 841]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 159 locations, 7 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: 55.4s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1011 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 769 mSDsluCounter, 403 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 232 mSDsCounter, 264 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2467 IncrementalHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 264 mSolverCounterUnsat, 171 mSDtfsCounter, 2467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3019occurred in iteration=16, InterpolantAutomatonStates: 110, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 364 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 317 ConstructedInterpolants, 0 QuantifiedInterpolants, 3701 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-30 23:17:10,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE