./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.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/safe004_power.oepc_pso.oepc_rmo.oepc.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 0e4c58396f2f1321fc04aa282f0d0da6b992b027ee8ad0492bbdba2f990191a3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:18:04,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:18:04,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:18:04,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:18:04,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:18:04,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:18:04,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:18:04,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:18:04,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:18:04,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:18:04,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:18:04,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:18:04,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:18:04,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:18:04,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:18:04,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:18:04,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:18:04,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:18:04,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:18:04,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:18:04,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:18:04,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:18:04,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:18:04,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:18:04,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:18:04,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:18:04,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:18:04,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:18:04,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:18:04,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:18:04,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:18:04,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:18:04,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:18:04,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:18:04,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:18:04,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:18:04,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:18:04,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:18:04,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:18:04,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:18:04,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:18:04,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:18:04,377 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:18:04,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:18:04,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:18:04,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:18:04,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:18:04,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:18:04,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:18:04,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:18:04,380 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:18:04,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:18:04,381 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:18:04,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:18:04,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:18:04,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:18:04,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:18:04,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:18:04,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:18:04,383 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:18:04,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:18:04,383 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:18:04,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:18:04,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:18:04,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:18:04,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:18:04,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:18:04,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:18:04,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:18:04,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:18:04,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:18:04,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:18:04,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:18:04,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:18:04,386 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:18:04,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:18:04,386 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:18:04,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e4c58396f2f1321fc04aa282f0d0da6b992b027ee8ad0492bbdba2f990191a3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:18:04,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:18:04,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:18:04,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:18:04,700 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:18:04,700 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:18:04,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-08-30 23:18:05,786 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:18:06,040 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:18:06,040 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-08-30 23:18:06,067 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282863551/d83376c4d19f414f9375c81a562129a4/FLAG26f4e91f3 [2023-08-30 23:18:06,079 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/282863551/d83376c4d19f414f9375c81a562129a4 [2023-08-30 23:18:06,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:18:06,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:18:06,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:18:06,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:18:06,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:18:06,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e06418f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06, skipping insertion in model container [2023-08-30 23:18:06,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:18:06,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:18:06,328 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/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-08-30 23:18:06,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:18:06,593 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:18:06,607 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/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-08-30 23:18:06,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:18:06,728 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:18:06,728 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:18:06,734 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:18:06,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06 WrapperNode [2023-08-30 23:18:06,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:18:06,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:18:06,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:18:06,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:18:06,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,825 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-08-30 23:18:06,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:18:06,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:18:06,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:18:06,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:18:06,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,855 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:18:06,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:18:06,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:18:06,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:18:06,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (1/1) ... [2023-08-30 23:18:06,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:18:06,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:18:06,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:18:06,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:18:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:18:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:18:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:18:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:18:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:18:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:18:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:18:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:18:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:18:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:18:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:18:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:18:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:18:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:18:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:18:06,951 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:18:07,127 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:18:07,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:18:07,497 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:18:07,671 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:18:07,672 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:18:07,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:18:07 BoogieIcfgContainer [2023-08-30 23:18:07,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:18:07,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:18:07,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:18:07,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:18:07,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:18:06" (1/3) ... [2023-08-30 23:18:07,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d83350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:18:07, skipping insertion in model container [2023-08-30 23:18:07,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:18:06" (2/3) ... [2023-08-30 23:18:07,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d83350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:18:07, skipping insertion in model container [2023-08-30 23:18:07,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:18:07" (3/3) ... [2023-08-30 23:18:07,682 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-08-30 23:18:07,689 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:18:07,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:18:07,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:18:07,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:18:07,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:18:07,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 107 transitions, 229 flow [2023-08-30 23:18:07,859 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2023-08-30 23:18:07,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:18:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-30 23:18:07,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 107 transitions, 229 flow [2023-08-30 23:18:07,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 104 transitions, 217 flow [2023-08-30 23:18:07,873 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:18:07,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 104 transitions, 217 flow [2023-08-30 23:18:07,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 104 transitions, 217 flow [2023-08-30 23:18:07,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 104 transitions, 217 flow [2023-08-30 23:18:07,931 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2023-08-30 23:18:07,931 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:18:07,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-30 23:18:07,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 1920 [2023-08-30 23:18:11,397 INFO L134 LiptonReduction]: Checked pairs total: 5019 [2023-08-30 23:18:11,397 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-30 23:18:11,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:18:11,414 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;@2178356a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:18:11,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 23:18:11,417 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 23:18:11,417 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:18:11,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:11,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 23:18:11,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:11,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 534214, now seen corresponding path program 1 times [2023-08-30 23:18:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:11,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610047271] [2023-08-30 23:18:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:11,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610047271] [2023-08-30 23:18:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610047271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:11,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:11,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:18:11,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432843592] [2023-08-30 23:18:11,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:18:11,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:18:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:18:11,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 198 [2023-08-30 23:18:11,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:11,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:11,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 198 [2023-08-30 23:18:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:12,177 INFO L130 PetriNetUnfolder]: 1263/2016 cut-off events. [2023-08-30 23:18:12,178 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 23:18:12,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 2016 events. 1263/2016 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10879 event pairs, 204 based on Foata normal form. 80/1935 useless extension candidates. Maximal degree in co-relation 3916. Up to 1510 conditions per place. [2023-08-30 23:18:12,195 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 33 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-08-30 23:18:12,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 175 flow [2023-08-30 23:18:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:18:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:18:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-30 23:18:12,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2023-08-30 23:18:12,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-30 23:18:12,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-30 23:18:12,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:12,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-30 23:18:12,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:12,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:12,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:12,224 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 315 transitions. [2023-08-30 23:18:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 175 flow [2023-08-30 23:18:12,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:12,228 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 54 flow [2023-08-30 23:18:12,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-30 23:18:12,233 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-30 23:18:12,234 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 54 flow [2023-08-30 23:18:12,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:12,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:12,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:18:12,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:12,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1598286958, now seen corresponding path program 1 times [2023-08-30 23:18:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357594990] [2023-08-30 23:18:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:13,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357594990] [2023-08-30 23:18:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357594990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:13,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:13,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745758543] [2023-08-30 23:18:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:13,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:13,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-30 23:18:13,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:13,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:13,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-30 23:18:13,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:13,958 INFO L130 PetriNetUnfolder]: 1407/2122 cut-off events. [2023-08-30 23:18:13,958 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 23:18:13,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2122 events. 1407/2122 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9841 event pairs, 264 based on Foata normal form. 116/2232 useless extension candidates. Maximal degree in co-relation 4404. Up to 1397 conditions per place. [2023-08-30 23:18:13,969 INFO L137 encePairwiseOnDemand]: 187/198 looper letters, 31 selfloop transitions, 9 changer transitions 27/68 dead transitions. [2023-08-30 23:18:13,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 68 transitions, 286 flow [2023-08-30 23:18:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:18:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:18:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 644 transitions. [2023-08-30 23:18:13,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2023-08-30 23:18:13,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 644 transitions. [2023-08-30 23:18:13,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 644 transitions. [2023-08-30 23:18:13,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:13,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 644 transitions. [2023-08-30 23:18:13,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:13,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:13,983 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:13,983 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 54 flow. Second operand 7 states and 644 transitions. [2023-08-30 23:18:13,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 68 transitions, 286 flow [2023-08-30 23:18:13,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:18:13,985 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 136 flow [2023-08-30 23:18:13,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-30 23:18:13,986 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-30 23:18:13,986 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 136 flow [2023-08-30 23:18:13,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:13,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:13,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:18:13,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:13,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1992708335, now seen corresponding path program 1 times [2023-08-30 23:18:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635676692] [2023-08-30 23:18:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:14,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:14,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635676692] [2023-08-30 23:18:14,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635676692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:14,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:14,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891725020] [2023-08-30 23:18:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:14,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:14,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:14,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-30 23:18:14,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:14,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:14,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-30 23:18:14,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:15,338 INFO L130 PetriNetUnfolder]: 1240/1885 cut-off events. [2023-08-30 23:18:15,339 INFO L131 PetriNetUnfolder]: For 1854/1864 co-relation queries the response was YES. [2023-08-30 23:18:15,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 1885 events. 1240/1885 cut-off events. For 1854/1864 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8538 event pairs, 352 based on Foata normal form. 96/1976 useless extension candidates. Maximal degree in co-relation 6162. Up to 1040 conditions per place. [2023-08-30 23:18:15,351 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 36 selfloop transitions, 9 changer transitions 28/74 dead transitions. [2023-08-30 23:18:15,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 488 flow [2023-08-30 23:18:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:18:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:18:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2023-08-30 23:18:15,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46176046176046176 [2023-08-30 23:18:15,355 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2023-08-30 23:18:15,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2023-08-30 23:18:15,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:15,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2023-08-30 23:18:15,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:15,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:15,360 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:15,360 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 136 flow. Second operand 7 states and 640 transitions. [2023-08-30 23:18:15,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 488 flow [2023-08-30 23:18:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 478 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 23:18:15,376 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 222 flow [2023-08-30 23:18:15,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-30 23:18:15,378 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-30 23:18:15,381 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 222 flow [2023-08-30 23:18:15,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:15,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:15,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:15,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:18:15,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:15,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1577430061, now seen corresponding path program 1 times [2023-08-30 23:18:15,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:15,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008673392] [2023-08-30 23:18:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:15,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008673392] [2023-08-30 23:18:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008673392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:18:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957950772] [2023-08-30 23:18:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:18:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:18:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:18:16,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-08-30 23:18:16,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:16,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:16,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-08-30 23:18:16,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:16,863 INFO L130 PetriNetUnfolder]: 2276/3384 cut-off events. [2023-08-30 23:18:16,864 INFO L131 PetriNetUnfolder]: For 5458/5458 co-relation queries the response was YES. [2023-08-30 23:18:16,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12248 conditions, 3384 events. 2276/3384 cut-off events. For 5458/5458 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16107 event pairs, 432 based on Foata normal form. 90/3474 useless extension candidates. Maximal degree in co-relation 12226. Up to 1638 conditions per place. [2023-08-30 23:18:16,883 INFO L137 encePairwiseOnDemand]: 185/198 looper letters, 40 selfloop transitions, 17 changer transitions 33/90 dead transitions. [2023-08-30 23:18:16,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 729 flow [2023-08-30 23:18:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:18:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:18:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-30 23:18:16,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2023-08-30 23:18:16,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-30 23:18:16,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-30 23:18:16,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:16,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-30 23:18:16,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:16,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:16,890 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:16,890 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 222 flow. Second operand 6 states and 550 transitions. [2023-08-30 23:18:16,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 729 flow [2023-08-30 23:18:16,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 90 transitions, 702 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 23:18:16,918 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 269 flow [2023-08-30 23:18:16,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-30 23:18:16,919 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-08-30 23:18:16,919 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 269 flow [2023-08-30 23:18:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:16,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:16,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:18:16,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:16,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1644459811, now seen corresponding path program 2 times [2023-08-30 23:18:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609653517] [2023-08-30 23:18:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609653517] [2023-08-30 23:18:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609653517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:17,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:17,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:18:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121761222] [2023-08-30 23:18:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:17,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:18:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:18:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:18:17,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-08-30 23:18:17,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 269 flow. Second operand has 7 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:17,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:17,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-08-30 23:18:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:18,609 INFO L130 PetriNetUnfolder]: 2088/3135 cut-off events. [2023-08-30 23:18:18,610 INFO L131 PetriNetUnfolder]: For 5348/5348 co-relation queries the response was YES. [2023-08-30 23:18:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12605 conditions, 3135 events. 2088/3135 cut-off events. For 5348/5348 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15130 event pairs, 231 based on Foata normal form. 107/3242 useless extension candidates. Maximal degree in co-relation 12582. Up to 1541 conditions per place. [2023-08-30 23:18:18,629 INFO L137 encePairwiseOnDemand]: 185/198 looper letters, 48 selfloop transitions, 21 changer transitions 64/133 dead transitions. [2023-08-30 23:18:18,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 133 transitions, 1208 flow [2023-08-30 23:18:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:18:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:18:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 820 transitions. [2023-08-30 23:18:18,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601571268237935 [2023-08-30 23:18:18,633 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 820 transitions. [2023-08-30 23:18:18,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 820 transitions. [2023-08-30 23:18:18,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:18,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 820 transitions. [2023-08-30 23:18:18,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.11111111111111) internal successors, (820), 9 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:18,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:18,640 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:18,641 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 269 flow. Second operand 9 states and 820 transitions. [2023-08-30 23:18:18,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 133 transitions, 1208 flow [2023-08-30 23:18:18,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 133 transitions, 1078 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-30 23:18:18,658 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 339 flow [2023-08-30 23:18:18,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=339, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-08-30 23:18:18,660 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-08-30 23:18:18,660 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 339 flow [2023-08-30 23:18:18,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:18,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:18,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:18:18,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:18,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1711533748, now seen corresponding path program 1 times [2023-08-30 23:18:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062131462] [2023-08-30 23:18:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062131462] [2023-08-30 23:18:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062131462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:19,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:19,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929734979] [2023-08-30 23:18:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:19,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:19,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-30 23:18:19,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:19,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:19,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-30 23:18:19,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:19,980 INFO L130 PetriNetUnfolder]: 1211/1883 cut-off events. [2023-08-30 23:18:19,981 INFO L131 PetriNetUnfolder]: For 5961/5993 co-relation queries the response was YES. [2023-08-30 23:18:19,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8370 conditions, 1883 events. 1211/1883 cut-off events. For 5961/5993 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8492 event pairs, 531 based on Foata normal form. 74/1946 useless extension candidates. Maximal degree in co-relation 8344. Up to 1473 conditions per place. [2023-08-30 23:18:20,003 INFO L137 encePairwiseOnDemand]: 187/198 looper letters, 45 selfloop transitions, 25 changer transitions 19/93 dead transitions. [2023-08-30 23:18:20,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 850 flow [2023-08-30 23:18:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:18:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:18:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 645 transitions. [2023-08-30 23:18:20,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2023-08-30 23:18:20,006 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 645 transitions. [2023-08-30 23:18:20,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 645 transitions. [2023-08-30 23:18:20,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:20,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 645 transitions. [2023-08-30 23:18:20,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:20,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:20,011 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:20,011 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 339 flow. Second operand 7 states and 645 transitions. [2023-08-30 23:18:20,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 850 flow [2023-08-30 23:18:20,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 771 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 23:18:20,025 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 474 flow [2023-08-30 23:18:20,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-08-30 23:18:20,028 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2023-08-30 23:18:20,028 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 474 flow [2023-08-30 23:18:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:20,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:20,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:20,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:18:20,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:20,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash 681217372, now seen corresponding path program 1 times [2023-08-30 23:18:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384923385] [2023-08-30 23:18:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384923385] [2023-08-30 23:18:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384923385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:20,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:20,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:18:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218232919] [2023-08-30 23:18:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:20,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:20,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-30 23:18:20,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:20,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:20,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-30 23:18:20,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:21,245 INFO L130 PetriNetUnfolder]: 1620/2537 cut-off events. [2023-08-30 23:18:21,245 INFO L131 PetriNetUnfolder]: For 10973/11001 co-relation queries the response was YES. [2023-08-30 23:18:21,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 2537 events. 1620/2537 cut-off events. For 10973/11001 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12505 event pairs, 561 based on Foata normal form. 81/2590 useless extension candidates. Maximal degree in co-relation 11898. Up to 1205 conditions per place. [2023-08-30 23:18:21,268 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 53 selfloop transitions, 14 changer transitions 19/90 dead transitions. [2023-08-30 23:18:21,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 859 flow [2023-08-30 23:18:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:18:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:18:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 553 transitions. [2023-08-30 23:18:21,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654882154882155 [2023-08-30 23:18:21,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 553 transitions. [2023-08-30 23:18:21,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 553 transitions. [2023-08-30 23:18:21,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:21,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 553 transitions. [2023-08-30 23:18:21,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:21,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:21,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:21,274 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 474 flow. Second operand 6 states and 553 transitions. [2023-08-30 23:18:21,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 859 flow [2023-08-30 23:18:21,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 847 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:21,305 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 490 flow [2023-08-30 23:18:21,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-08-30 23:18:21,305 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-08-30 23:18:21,306 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 490 flow [2023-08-30 23:18:21,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:21,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:21,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:21,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:18:21,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:21,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash -268845576, now seen corresponding path program 1 times [2023-08-30 23:18:21,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:21,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47267074] [2023-08-30 23:18:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:21,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47267074] [2023-08-30 23:18:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47267074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:21,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:18:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691889202] [2023-08-30 23:18:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:18:21,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:18:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:18:21,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-30 23:18:21,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:21,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:21,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-30 23:18:21,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:22,382 INFO L130 PetriNetUnfolder]: 1652/2625 cut-off events. [2023-08-30 23:18:22,382 INFO L131 PetriNetUnfolder]: For 12526/12625 co-relation queries the response was YES. [2023-08-30 23:18:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12540 conditions, 2625 events. 1652/2625 cut-off events. For 12526/12625 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13398 event pairs, 219 based on Foata normal form. 169/2786 useless extension candidates. Maximal degree in co-relation 12507. Up to 1607 conditions per place. [2023-08-30 23:18:22,398 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 47 selfloop transitions, 10 changer transitions 43/104 dead transitions. [2023-08-30 23:18:22,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 1152 flow [2023-08-30 23:18:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:18:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:18:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2023-08-30 23:18:22,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158249158249157 [2023-08-30 23:18:22,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 584 transitions. [2023-08-30 23:18:22,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 584 transitions. [2023-08-30 23:18:22,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:22,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 584 transitions. [2023-08-30 23:18:22,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 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 23:18:22,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:22,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:22,405 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 490 flow. Second operand 6 states and 584 transitions. [2023-08-30 23:18:22,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 1152 flow [2023-08-30 23:18:22,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 1126 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:22,429 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 459 flow [2023-08-30 23:18:22,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-08-30 23:18:22,430 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2023-08-30 23:18:22,430 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 459 flow [2023-08-30 23:18:22,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:22,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:22,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:22,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:18:22,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:22,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1533629952, now seen corresponding path program 1 times [2023-08-30 23:18:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:22,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196539994] [2023-08-30 23:18:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:22,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:23,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196539994] [2023-08-30 23:18:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196539994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:23,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:23,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:18:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615790003] [2023-08-30 23:18:23,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:18:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:18:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:18:23,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 198 [2023-08-30 23:18:23,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 459 flow. Second operand has 8 states, 8 states have (on average 90.75) internal successors, (726), 8 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:23,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:23,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 198 [2023-08-30 23:18:23,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:23,698 INFO L130 PetriNetUnfolder]: 1280/2055 cut-off events. [2023-08-30 23:18:23,698 INFO L131 PetriNetUnfolder]: For 12070/12100 co-relation queries the response was YES. [2023-08-30 23:18:23,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10256 conditions, 2055 events. 1280/2055 cut-off events. For 12070/12100 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9757 event pairs, 746 based on Foata normal form. 70/2125 useless extension candidates. Maximal degree in co-relation 10220. Up to 1754 conditions per place. [2023-08-30 23:18:23,711 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 51 selfloop transitions, 7 changer transitions 15/77 dead transitions. [2023-08-30 23:18:23,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 814 flow [2023-08-30 23:18:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:18:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:18:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 588 transitions. [2023-08-30 23:18:23,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-08-30 23:18:23,714 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 588 transitions. [2023-08-30 23:18:23,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 588 transitions. [2023-08-30 23:18:23,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:23,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 588 transitions. [2023-08-30 23:18:23,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:23,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:23,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 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 23:18:23,719 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 459 flow. Second operand 6 states and 588 transitions. [2023-08-30 23:18:23,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 814 flow [2023-08-30 23:18:23,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 738 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-30 23:18:23,733 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 426 flow [2023-08-30 23:18:23,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=426, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2023-08-30 23:18:23,735 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2023-08-30 23:18:23,735 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 426 flow [2023-08-30 23:18:23,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.75) internal successors, (726), 8 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:23,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:23,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:23,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:18:23,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:23,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash 798857469, now seen corresponding path program 1 times [2023-08-30 23:18:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:23,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351945091] [2023-08-30 23:18:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:23,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351945091] [2023-08-30 23:18:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351945091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:18:24,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393747499] [2023-08-30 23:18:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:24,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:18:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:18:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:18:25,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-08-30 23:18:25,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 426 flow. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:25,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:25,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-08-30 23:18:25,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:25,715 INFO L130 PetriNetUnfolder]: 1502/2411 cut-off events. [2023-08-30 23:18:25,715 INFO L131 PetriNetUnfolder]: For 12866/12900 co-relation queries the response was YES. [2023-08-30 23:18:25,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11418 conditions, 2411 events. 1502/2411 cut-off events. For 12866/12900 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12009 event pairs, 592 based on Foata normal form. 100/2511 useless extension candidates. Maximal degree in co-relation 11382. Up to 1703 conditions per place. [2023-08-30 23:18:25,730 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 65 selfloop transitions, 27 changer transitions 25/121 dead transitions. [2023-08-30 23:18:25,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 121 transitions, 1205 flow [2023-08-30 23:18:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 23:18:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 23:18:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 972 transitions. [2023-08-30 23:18:25,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2023-08-30 23:18:25,734 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 972 transitions. [2023-08-30 23:18:25,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 972 transitions. [2023-08-30 23:18:25,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:25,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 972 transitions. [2023-08-30 23:18:25,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.36363636363636) internal successors, (972), 11 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:25,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:25,740 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:25,740 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 426 flow. Second operand 11 states and 972 transitions. [2023-08-30 23:18:25,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 121 transitions, 1205 flow [2023-08-30 23:18:25,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 121 transitions, 1157 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-30 23:18:25,766 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 675 flow [2023-08-30 23:18:25,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=675, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-08-30 23:18:25,767 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2023-08-30 23:18:25,767 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 675 flow [2023-08-30 23:18:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 9 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:25,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:25,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:25,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:18:25,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:25,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1925820901, now seen corresponding path program 2 times [2023-08-30 23:18:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527669652] [2023-08-30 23:18:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527669652] [2023-08-30 23:18:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527669652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:26,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:18:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94848339] [2023-08-30 23:18:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:18:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:18:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:18:26,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-30 23:18:26,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:26,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:26,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-30 23:18:26,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:27,241 INFO L130 PetriNetUnfolder]: 1531/2498 cut-off events. [2023-08-30 23:18:27,241 INFO L131 PetriNetUnfolder]: For 16123/16158 co-relation queries the response was YES. [2023-08-30 23:18:27,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13475 conditions, 2498 events. 1531/2498 cut-off events. For 16123/16158 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12878 event pairs, 679 based on Foata normal form. 76/2574 useless extension candidates. Maximal degree in co-relation 13437. Up to 1907 conditions per place. [2023-08-30 23:18:27,258 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 71 selfloop transitions, 19 changer transitions 27/121 dead transitions. [2023-08-30 23:18:27,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 121 transitions, 1383 flow [2023-08-30 23:18:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:18:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:18:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 864 transitions. [2023-08-30 23:18:27,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-30 23:18:27,262 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 864 transitions. [2023-08-30 23:18:27,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 864 transitions. [2023-08-30 23:18:27,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:27,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 864 transitions. [2023-08-30 23:18:27,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.0) internal successors, (864), 9 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:27,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:27,268 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:27,268 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 675 flow. Second operand 9 states and 864 transitions. [2023-08-30 23:18:27,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 121 transitions, 1383 flow [2023-08-30 23:18:27,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 1338 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 23:18:27,306 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 731 flow [2023-08-30 23:18:27,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2023-08-30 23:18:27,306 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 43 predicate places. [2023-08-30 23:18:27,307 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 731 flow [2023-08-30 23:18:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:27,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:27,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:18:27,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:27,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1923085713, now seen corresponding path program 1 times [2023-08-30 23:18:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217059093] [2023-08-30 23:18:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217059093] [2023-08-30 23:18:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217059093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:28,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 23:18:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292153013] [2023-08-30 23:18:28,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:28,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 23:18:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 23:18:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:18:28,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 198 [2023-08-30 23:18:28,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:28,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 198 [2023-08-30 23:18:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:28,784 INFO L130 PetriNetUnfolder]: 1650/2694 cut-off events. [2023-08-30 23:18:28,785 INFO L131 PetriNetUnfolder]: For 19222/19254 co-relation queries the response was YES. [2023-08-30 23:18:28,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14731 conditions, 2694 events. 1650/2694 cut-off events. For 19222/19254 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14344 event pairs, 252 based on Foata normal form. 61/2755 useless extension candidates. Maximal degree in co-relation 14691. Up to 1222 conditions per place. [2023-08-30 23:18:28,804 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 95 selfloop transitions, 34 changer transitions 23/156 dead transitions. [2023-08-30 23:18:28,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 156 transitions, 1918 flow [2023-08-30 23:18:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 23:18:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 23:18:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1023 transitions. [2023-08-30 23:18:28,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-30 23:18:28,808 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1023 transitions. [2023-08-30 23:18:28,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1023 transitions. [2023-08-30 23:18:28,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:28,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1023 transitions. [2023-08-30 23:18:28,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,816 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,816 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 731 flow. Second operand 11 states and 1023 transitions. [2023-08-30 23:18:28,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 156 transitions, 1918 flow [2023-08-30 23:18:28,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 156 transitions, 1863 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-30 23:18:28,856 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 1139 flow [2023-08-30 23:18:28,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1139, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-08-30 23:18:28,858 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2023-08-30 23:18:28,858 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 1139 flow [2023-08-30 23:18:28,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.66666666666667) internal successors, (771), 9 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:28,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:28,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:28,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:18:28,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:28,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 222767061, now seen corresponding path program 2 times [2023-08-30 23:18:28,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:28,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723490660] [2023-08-30 23:18:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:28,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:29,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:29,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723490660] [2023-08-30 23:18:29,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723490660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:29,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:29,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:18:29,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880699359] [2023-08-30 23:18:29,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:29,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:18:29,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:29,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:18:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:18:29,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 198 [2023-08-30 23:18:29,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 1139 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:29,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:29,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 198 [2023-08-30 23:18:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:30,068 INFO L130 PetriNetUnfolder]: 1502/2503 cut-off events. [2023-08-30 23:18:30,069 INFO L131 PetriNetUnfolder]: For 26852/26888 co-relation queries the response was YES. [2023-08-30 23:18:30,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15239 conditions, 2503 events. 1502/2503 cut-off events. For 26852/26888 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13356 event pairs, 422 based on Foata normal form. 59/2562 useless extension candidates. Maximal degree in co-relation 15195. Up to 1367 conditions per place. [2023-08-30 23:18:30,089 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 75 selfloop transitions, 42 changer transitions 40/161 dead transitions. [2023-08-30 23:18:30,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 161 transitions, 2307 flow [2023-08-30 23:18:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:18:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:18:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 753 transitions. [2023-08-30 23:18:30,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2023-08-30 23:18:30,092 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 753 transitions. [2023-08-30 23:18:30,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 753 transitions. [2023-08-30 23:18:30,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:30,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 753 transitions. [2023-08-30 23:18:30,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.125) internal successors, (753), 8 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,097 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,097 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 1139 flow. Second operand 8 states and 753 transitions. [2023-08-30 23:18:30,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 161 transitions, 2307 flow [2023-08-30 23:18:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 161 transitions, 2169 flow, removed 57 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:30,150 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 1414 flow [2023-08-30 23:18:30,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1414, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-30 23:18:30,151 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 59 predicate places. [2023-08-30 23:18:30,151 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 1414 flow [2023-08-30 23:18:30,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:30,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:30,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 23:18:30,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:30,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 636761603, now seen corresponding path program 1 times [2023-08-30 23:18:30,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121269899] [2023-08-30 23:18:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:31,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:31,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121269899] [2023-08-30 23:18:31,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121269899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:31,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:31,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:18:31,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720137064] [2023-08-30 23:18:31,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:31,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:18:31,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:18:31,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:18:31,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-08-30 23:18:31,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 1414 flow. Second operand has 10 states, 10 states have (on average 81.6) internal successors, (816), 10 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:31,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:31,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-08-30 23:18:31,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:32,358 INFO L130 PetriNetUnfolder]: 1412/2432 cut-off events. [2023-08-30 23:18:32,358 INFO L131 PetriNetUnfolder]: For 30468/30510 co-relation queries the response was YES. [2023-08-30 23:18:32,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15629 conditions, 2432 events. 1412/2432 cut-off events. For 30468/30510 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13517 event pairs, 160 based on Foata normal form. 93/2519 useless extension candidates. Maximal degree in co-relation 15581. Up to 1113 conditions per place. [2023-08-30 23:18:32,375 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 118 selfloop transitions, 43 changer transitions 29/194 dead transitions. [2023-08-30 23:18:32,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 194 transitions, 2952 flow [2023-08-30 23:18:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 23:18:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 23:18:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1230 transitions. [2023-08-30 23:18:32,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44372294372294374 [2023-08-30 23:18:32,379 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1230 transitions. [2023-08-30 23:18:32,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1230 transitions. [2023-08-30 23:18:32,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:32,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1230 transitions. [2023-08-30 23:18:32,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.85714285714286) internal successors, (1230), 14 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:32,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:32,386 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 198.0) internal successors, (2970), 15 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:32,387 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 1414 flow. Second operand 14 states and 1230 transitions. [2023-08-30 23:18:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 194 transitions, 2952 flow [2023-08-30 23:18:32,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 194 transitions, 2791 flow, removed 80 selfloop flow, removed 5 redundant places. [2023-08-30 23:18:32,456 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 1709 flow [2023-08-30 23:18:32,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1709, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2023-08-30 23:18:32,458 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 72 predicate places. [2023-08-30 23:18:32,458 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 1709 flow [2023-08-30 23:18:32,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.6) internal successors, (816), 10 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:32,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:32,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:32,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 23:18:32,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:32,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:32,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1211780200, now seen corresponding path program 1 times [2023-08-30 23:18:32,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575114436] [2023-08-30 23:18:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575114436] [2023-08-30 23:18:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575114436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:33,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:33,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:18:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535171721] [2023-08-30 23:18:33,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:18:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:18:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:18:34,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 198 [2023-08-30 23:18:34,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 1709 flow. Second operand has 10 states, 10 states have (on average 86.6) internal successors, (866), 10 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:34,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:34,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 198 [2023-08-30 23:18:34,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:34,603 INFO L130 PetriNetUnfolder]: 1256/2212 cut-off events. [2023-08-30 23:18:34,604 INFO L131 PetriNetUnfolder]: For 29054/29084 co-relation queries the response was YES. [2023-08-30 23:18:34,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14423 conditions, 2212 events. 1256/2212 cut-off events. For 29054/29084 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12394 event pairs, 503 based on Foata normal form. 65/2271 useless extension candidates. Maximal degree in co-relation 14370. Up to 1783 conditions per place. [2023-08-30 23:18:34,618 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 97 selfloop transitions, 38 changer transitions 15/154 dead transitions. [2023-08-30 23:18:34,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 154 transitions, 2477 flow [2023-08-30 23:18:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:18:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:18:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 841 transitions. [2023-08-30 23:18:34,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719416386083053 [2023-08-30 23:18:34,621 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 841 transitions. [2023-08-30 23:18:34,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 841 transitions. [2023-08-30 23:18:34,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:34,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 841 transitions. [2023-08-30 23:18:34,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.44444444444444) internal successors, (841), 9 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:34,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:34,626 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:34,626 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 1709 flow. Second operand 9 states and 841 transitions. [2023-08-30 23:18:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 154 transitions, 2477 flow [2023-08-30 23:18:34,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 154 transitions, 2382 flow, removed 41 selfloop flow, removed 7 redundant places. [2023-08-30 23:18:34,706 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 1711 flow [2023-08-30 23:18:34,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1711, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2023-08-30 23:18:34,707 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 72 predicate places. [2023-08-30 23:18:34,707 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 1711 flow [2023-08-30 23:18:34,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.6) internal successors, (866), 10 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:34,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:34,708 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 23:18:34,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 23:18:34,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:34,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -272155952, now seen corresponding path program 1 times [2023-08-30 23:18:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616210791] [2023-08-30 23:18:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616210791] [2023-08-30 23:18:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616210791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:34,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:34,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:18:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61471093] [2023-08-30 23:18:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:34,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:18:34,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:18:34,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:18:34,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-08-30 23:18:34,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 1711 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:34,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:34,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-08-30 23:18:34,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:35,178 INFO L130 PetriNetUnfolder]: 643/1206 cut-off events. [2023-08-30 23:18:35,178 INFO L131 PetriNetUnfolder]: For 17875/17929 co-relation queries the response was YES. [2023-08-30 23:18:35,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 1206 events. 643/1206 cut-off events. For 17875/17929 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6463 event pairs, 141 based on Foata normal form. 99/1298 useless extension candidates. Maximal degree in co-relation 7682. Up to 979 conditions per place. [2023-08-30 23:18:35,186 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 109 selfloop transitions, 4 changer transitions 2/123 dead transitions. [2023-08-30 23:18:35,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 2112 flow [2023-08-30 23:18:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:18:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:18:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-30 23:18:35,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033670033670034 [2023-08-30 23:18:35,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-30 23:18:35,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-30 23:18:35,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:35,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-30 23:18:35,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,191 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 1711 flow. Second operand 3 states and 299 transitions. [2023-08-30 23:18:35,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 2112 flow [2023-08-30 23:18:35,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 123 transitions, 1973 flow, removed 29 selfloop flow, removed 9 redundant places. [2023-08-30 23:18:35,216 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 1279 flow [2023-08-30 23:18:35,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1279, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2023-08-30 23:18:35,218 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 64 predicate places. [2023-08-30 23:18:35,218 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 1279 flow [2023-08-30 23:18:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:35,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:35,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 23:18:35,219 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:35,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1370010612, now seen corresponding path program 1 times [2023-08-30 23:18:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157614807] [2023-08-30 23:18:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157614807] [2023-08-30 23:18:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157614807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:35,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:35,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:18:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968925139] [2023-08-30 23:18:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:18:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:18:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:18:35,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-08-30 23:18:35,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 1279 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:35,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-08-30 23:18:35,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:35,594 INFO L130 PetriNetUnfolder]: 308/652 cut-off events. [2023-08-30 23:18:35,595 INFO L131 PetriNetUnfolder]: For 8480/8505 co-relation queries the response was YES. [2023-08-30 23:18:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4401 conditions, 652 events. 308/652 cut-off events. For 8480/8505 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3252 event pairs, 44 based on Foata normal form. 85/730 useless extension candidates. Maximal degree in co-relation 4352. Up to 253 conditions per place. [2023-08-30 23:18:35,600 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 111 selfloop transitions, 7 changer transitions 2/126 dead transitions. [2023-08-30 23:18:35,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 126 transitions, 2025 flow [2023-08-30 23:18:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:18:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:18:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2023-08-30 23:18:35,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012626262626263 [2023-08-30 23:18:35,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2023-08-30 23:18:35,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2023-08-30 23:18:35,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:35,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2023-08-30 23:18:35,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,616 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 1279 flow. Second operand 4 states and 397 transitions. [2023-08-30 23:18:35,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 126 transitions, 2025 flow [2023-08-30 23:18:35,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 1927 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-08-30 23:18:35,634 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 1077 flow [2023-08-30 23:18:35,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1077, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2023-08-30 23:18:35,634 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 63 predicate places. [2023-08-30 23:18:35,634 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 1077 flow [2023-08-30 23:18:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:35,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:35,635 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 23:18:35,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 23:18:35,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:35,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1214453931, now seen corresponding path program 1 times [2023-08-30 23:18:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:35,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621408333] [2023-08-30 23:18:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621408333] [2023-08-30 23:18:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621408333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:18:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184078312] [2023-08-30 23:18:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:18:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:18:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:18:37,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 198 [2023-08-30 23:18:37,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 1077 flow. Second operand has 10 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:37,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:37,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 198 [2023-08-30 23:18:37,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:38,002 INFO L130 PetriNetUnfolder]: 368/793 cut-off events. [2023-08-30 23:18:38,003 INFO L131 PetriNetUnfolder]: For 9250/9268 co-relation queries the response was YES. [2023-08-30 23:18:38,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 793 events. 368/793 cut-off events. For 9250/9268 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4075 event pairs, 50 based on Foata normal form. 24/815 useless extension candidates. Maximal degree in co-relation 5434. Up to 472 conditions per place. [2023-08-30 23:18:38,008 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 85 selfloop transitions, 42 changer transitions 16/146 dead transitions. [2023-08-30 23:18:38,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 146 transitions, 2224 flow [2023-08-30 23:18:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 23:18:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 23:18:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1329 transitions. [2023-08-30 23:18:38,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44747474747474747 [2023-08-30 23:18:38,011 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1329 transitions. [2023-08-30 23:18:38,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1329 transitions. [2023-08-30 23:18:38,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:38,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1329 transitions. [2023-08-30 23:18:38,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.6) internal successors, (1329), 15 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:38,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:38,018 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 198.0) internal successors, (3168), 16 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:38,018 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 1077 flow. Second operand 15 states and 1329 transitions. [2023-08-30 23:18:38,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 146 transitions, 2224 flow [2023-08-30 23:18:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 146 transitions, 2147 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-30 23:18:38,040 INFO L231 Difference]: Finished difference. Result has 117 places, 91 transitions, 1396 flow [2023-08-30 23:18:38,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1396, PETRI_PLACES=117, PETRI_TRANSITIONS=91} [2023-08-30 23:18:38,041 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 82 predicate places. [2023-08-30 23:18:38,041 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 1396 flow [2023-08-30 23:18:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:38,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:38,042 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 23:18:38,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 23:18:38,042 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:38,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash -218599849, now seen corresponding path program 2 times [2023-08-30 23:18:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:38,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063559885] [2023-08-30 23:18:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:40,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:40,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063559885] [2023-08-30 23:18:40,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063559885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:40,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:40,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:18:40,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766643841] [2023-08-30 23:18:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:40,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:18:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:18:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:18:40,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 198 [2023-08-30 23:18:40,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 91 transitions, 1396 flow. Second operand has 10 states, 10 states have (on average 85.9) internal successors, (859), 10 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:40,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:40,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 198 [2023-08-30 23:18:40,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:40,706 INFO L130 PetriNetUnfolder]: 326/738 cut-off events. [2023-08-30 23:18:40,706 INFO L131 PetriNetUnfolder]: For 9911/9934 co-relation queries the response was YES. [2023-08-30 23:18:40,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5114 conditions, 738 events. 326/738 cut-off events. For 9911/9934 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3871 event pairs, 84 based on Foata normal form. 27/765 useless extension candidates. Maximal degree in co-relation 5060. Up to 479 conditions per place. [2023-08-30 23:18:40,710 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 84 selfloop transitions, 22 changer transitions 15/123 dead transitions. [2023-08-30 23:18:40,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 1972 flow [2023-08-30 23:18:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:18:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:18:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 651 transitions. [2023-08-30 23:18:40,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-30 23:18:40,719 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 651 transitions. [2023-08-30 23:18:40,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 651 transitions. [2023-08-30 23:18:40,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:40,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 651 transitions. [2023-08-30 23:18:40,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:40,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:40,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:40,722 INFO L175 Difference]: Start difference. First operand has 117 places, 91 transitions, 1396 flow. Second operand 7 states and 651 transitions. [2023-08-30 23:18:40,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 1972 flow [2023-08-30 23:18:40,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 123 transitions, 1798 flow, removed 84 selfloop flow, removed 5 redundant places. [2023-08-30 23:18:40,753 INFO L231 Difference]: Finished difference. Result has 118 places, 81 transitions, 1150 flow [2023-08-30 23:18:40,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1150, PETRI_PLACES=118, PETRI_TRANSITIONS=81} [2023-08-30 23:18:40,753 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2023-08-30 23:18:40,753 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 81 transitions, 1150 flow [2023-08-30 23:18:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.9) internal successors, (859), 10 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:40,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:40,754 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 23:18:40,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 23:18:40,754 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:40,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:40,755 INFO L85 PathProgramCache]: Analyzing trace with hash 547497481, now seen corresponding path program 3 times [2023-08-30 23:18:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:40,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309545063] [2023-08-30 23:18:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:42,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309545063] [2023-08-30 23:18:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309545063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:42,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:42,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:18:42,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996828009] [2023-08-30 23:18:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:42,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:18:42,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:18:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:18:42,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 198 [2023-08-30 23:18:42,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 81 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 85.9) internal successors, (859), 10 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:42,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:42,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 198 [2023-08-30 23:18:42,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:42,698 INFO L130 PetriNetUnfolder]: 223/476 cut-off events. [2023-08-30 23:18:42,698 INFO L131 PetriNetUnfolder]: For 5547/5547 co-relation queries the response was YES. [2023-08-30 23:18:42,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 476 events. 223/476 cut-off events. For 5547/5547 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2020 event pairs, 56 based on Foata normal form. 6/482 useless extension candidates. Maximal degree in co-relation 3236. Up to 385 conditions per place. [2023-08-30 23:18:42,700 INFO L137 encePairwiseOnDemand]: 189/198 looper letters, 68 selfloop transitions, 13 changer transitions 23/105 dead transitions. [2023-08-30 23:18:42,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 1531 flow [2023-08-30 23:18:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:18:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:18:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 816 transitions. [2023-08-30 23:18:42,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2023-08-30 23:18:42,702 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 816 transitions. [2023-08-30 23:18:42,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 816 transitions. [2023-08-30 23:18:42,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:42,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 816 transitions. [2023-08-30 23:18:42,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:42,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:42,706 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:42,706 INFO L175 Difference]: Start difference. First operand has 118 places, 81 transitions, 1150 flow. Second operand 9 states and 816 transitions. [2023-08-30 23:18:42,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 1531 flow [2023-08-30 23:18:42,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 1339 flow, removed 56 selfloop flow, removed 15 redundant places. [2023-08-30 23:18:42,724 INFO L231 Difference]: Finished difference. Result has 112 places, 70 transitions, 902 flow [2023-08-30 23:18:42,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=112, PETRI_TRANSITIONS=70} [2023-08-30 23:18:42,725 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 77 predicate places. [2023-08-30 23:18:42,725 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 70 transitions, 902 flow [2023-08-30 23:18:42,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.9) internal successors, (859), 10 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:42,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:42,725 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] [2023-08-30 23:18:42,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 23:18:42,726 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:42,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1423020015, now seen corresponding path program 1 times [2023-08-30 23:18:42,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:42,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976699912] [2023-08-30 23:18:42,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976699912] [2023-08-30 23:18:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976699912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 23:18:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676457518] [2023-08-30 23:18:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 23:18:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 23:18:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-30 23:18:43,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 198 [2023-08-30 23:18:43,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 70 transitions, 902 flow. Second operand has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:43,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:43,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 198 [2023-08-30 23:18:43,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:44,440 INFO L130 PetriNetUnfolder]: 291/590 cut-off events. [2023-08-30 23:18:44,441 INFO L131 PetriNetUnfolder]: For 6046/6046 co-relation queries the response was YES. [2023-08-30 23:18:44,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 590 events. 291/590 cut-off events. For 6046/6046 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2602 event pairs, 67 based on Foata normal form. 7/597 useless extension candidates. Maximal degree in co-relation 3706. Up to 236 conditions per place. [2023-08-30 23:18:44,445 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 85 selfloop transitions, 13 changer transitions 29/128 dead transitions. [2023-08-30 23:18:44,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 1638 flow [2023-08-30 23:18:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 23:18:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 23:18:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 988 transitions. [2023-08-30 23:18:44,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45362718089990817 [2023-08-30 23:18:44,447 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 988 transitions. [2023-08-30 23:18:44,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 988 transitions. [2023-08-30 23:18:44,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:44,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 988 transitions. [2023-08-30 23:18:44,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.81818181818181) internal successors, (988), 11 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,452 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,452 INFO L175 Difference]: Start difference. First operand has 112 places, 70 transitions, 902 flow. Second operand 11 states and 988 transitions. [2023-08-30 23:18:44,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 1638 flow [2023-08-30 23:18:44,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 1433 flow, removed 67 selfloop flow, removed 22 redundant places. [2023-08-30 23:18:44,468 INFO L231 Difference]: Finished difference. Result has 97 places, 64 transitions, 725 flow [2023-08-30 23:18:44,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=725, PETRI_PLACES=97, PETRI_TRANSITIONS=64} [2023-08-30 23:18:44,469 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2023-08-30 23:18:44,469 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 64 transitions, 725 flow [2023-08-30 23:18:44,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:44,469 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] [2023-08-30 23:18:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 23:18:44,470 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:44,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1177964945, now seen corresponding path program 1 times [2023-08-30 23:18:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659468650] [2023-08-30 23:18:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659468650] [2023-08-30 23:18:44,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659468650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:44,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:44,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:18:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751542826] [2023-08-30 23:18:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:18:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:18:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:18:44,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-08-30 23:18:44,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 64 transitions, 725 flow. Second operand has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:44,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-08-30 23:18:44,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:44,789 INFO L130 PetriNetUnfolder]: 135/281 cut-off events. [2023-08-30 23:18:44,789 INFO L131 PetriNetUnfolder]: For 2547/2551 co-relation queries the response was YES. [2023-08-30 23:18:44,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 281 events. 135/281 cut-off events. For 2547/2551 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1075 event pairs, 16 based on Foata normal form. 22/301 useless extension candidates. Maximal degree in co-relation 1630. Up to 119 conditions per place. [2023-08-30 23:18:44,791 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 84 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-08-30 23:18:44,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 97 transitions, 1322 flow [2023-08-30 23:18:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:18:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:18:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2023-08-30 23:18:44,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-08-30 23:18:44,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2023-08-30 23:18:44,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2023-08-30 23:18:44,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:44,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2023-08-30 23:18:44,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,795 INFO L175 Difference]: Start difference. First operand has 97 places, 64 transitions, 725 flow. Second operand 5 states and 484 transitions. [2023-08-30 23:18:44,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 97 transitions, 1322 flow [2023-08-30 23:18:44,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 988 flow, removed 82 selfloop flow, removed 22 redundant places. [2023-08-30 23:18:44,802 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 473 flow [2023-08-30 23:18:44,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-08-30 23:18:44,803 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2023-08-30 23:18:44,804 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 473 flow [2023-08-30 23:18:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:44,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:44,804 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 23:18:44,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 23:18:44,804 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:44,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1782618140, now seen corresponding path program 1 times [2023-08-30 23:18:44,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:44,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115714110] [2023-08-30 23:18:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:44,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:46,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115714110] [2023-08-30 23:18:46,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115714110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:46,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:46,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 23:18:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747076788] [2023-08-30 23:18:46,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:46,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 23:18:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 23:18:46,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-30 23:18:46,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 198 [2023-08-30 23:18:46,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 473 flow. Second operand has 12 states, 12 states have (on average 85.75) internal successors, (1029), 12 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 23:18:46,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:46,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 198 [2023-08-30 23:18:46,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:46,449 INFO L130 PetriNetUnfolder]: 148/313 cut-off events. [2023-08-30 23:18:46,449 INFO L131 PetriNetUnfolder]: For 1305/1305 co-relation queries the response was YES. [2023-08-30 23:18:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 313 events. 148/313 cut-off events. For 1305/1305 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1140 event pairs, 28 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1518. Up to 182 conditions per place. [2023-08-30 23:18:46,451 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 48 selfloop transitions, 11 changer transitions 26/86 dead transitions. [2023-08-30 23:18:46,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 828 flow [2023-08-30 23:18:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:18:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:18:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2023-08-30 23:18:46,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-30 23:18:46,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2023-08-30 23:18:46,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2023-08-30 23:18:46,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:46,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2023-08-30 23:18:46,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:46,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:46,456 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:46,456 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 473 flow. Second operand 7 states and 638 transitions. [2023-08-30 23:18:46,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 828 flow [2023-08-30 23:18:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 723 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-08-30 23:18:46,461 INFO L231 Difference]: Finished difference. Result has 77 places, 48 transitions, 358 flow [2023-08-30 23:18:46,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=358, PETRI_PLACES=77, PETRI_TRANSITIONS=48} [2023-08-30 23:18:46,462 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 42 predicate places. [2023-08-30 23:18:46,462 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 48 transitions, 358 flow [2023-08-30 23:18:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 85.75) internal successors, (1029), 12 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 23:18:46,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:46,463 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 23:18:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 23:18:46,463 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:46,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1247472168, now seen corresponding path program 2 times [2023-08-30 23:18:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8953717] [2023-08-30 23:18:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:18:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:18:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:18:47,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8953717] [2023-08-30 23:18:47,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8953717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:18:47,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:18:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 23:18:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641942081] [2023-08-30 23:18:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:18:47,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 23:18:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:18:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 23:18:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-30 23:18:47,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 198 [2023-08-30 23:18:47,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 48 transitions, 358 flow. Second operand has 10 states, 10 states have (on average 80.2) internal successors, (802), 10 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:47,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:18:47,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 198 [2023-08-30 23:18:47,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:18:47,774 INFO L130 PetriNetUnfolder]: 118/258 cut-off events. [2023-08-30 23:18:47,774 INFO L131 PetriNetUnfolder]: For 769/769 co-relation queries the response was YES. [2023-08-30 23:18:47,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 258 events. 118/258 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 935 event pairs, 19 based on Foata normal form. 1/259 useless extension candidates. Maximal degree in co-relation 1100. Up to 65 conditions per place. [2023-08-30 23:18:47,775 INFO L137 encePairwiseOnDemand]: 188/198 looper letters, 63 selfloop transitions, 17 changer transitions 16/96 dead transitions. [2023-08-30 23:18:47,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 799 flow [2023-08-30 23:18:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 23:18:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 23:18:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 916 transitions. [2023-08-30 23:18:47,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42056932966023874 [2023-08-30 23:18:47,777 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 916 transitions. [2023-08-30 23:18:47,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 916 transitions. [2023-08-30 23:18:47,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:18:47,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 916 transitions. [2023-08-30 23:18:47,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.27272727272727) internal successors, (916), 11 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:47,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:47,781 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:47,781 INFO L175 Difference]: Start difference. First operand has 77 places, 48 transitions, 358 flow. Second operand 11 states and 916 transitions. [2023-08-30 23:18:47,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 799 flow [2023-08-30 23:18:47,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 722 flow, removed 10 selfloop flow, removed 16 redundant places. [2023-08-30 23:18:47,785 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 309 flow [2023-08-30 23:18:47,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=309, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-08-30 23:18:47,786 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2023-08-30 23:18:47,786 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 309 flow [2023-08-30 23:18:47,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.2) internal successors, (802), 10 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:18:47,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:18:47,786 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 23:18:47,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 23:18:47,787 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 23:18:47,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:18:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash -151216652, now seen corresponding path program 3 times [2023-08-30 23:18:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:18:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054772973] [2023-08-30 23:18:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:18:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:18:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:18:47,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:18:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:18:47,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:18:47,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:18:47,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-30 23:18:47,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-30 23:18:47,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-30 23:18:47,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-30 23:18:47,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-30 23:18:47,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-30 23:18:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 23:18:47,894 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:18:47,899 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:18:47,899 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:18:47,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:18:47 BasicIcfg [2023-08-30 23:18:47,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:18:47,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:18:47,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:18:47,955 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:18:47,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:18:07" (3/4) ... [2023-08-30 23:18:47,957 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:18:48,012 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:18:48,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:18:48,013 INFO L158 Benchmark]: Toolchain (without parser) took 41931.83ms. Allocated memory was 81.8MB in the beginning and 790.6MB in the end (delta: 708.8MB). Free memory was 58.1MB in the beginning and 377.9MB in the end (delta: -319.8MB). Peak memory consumption was 390.7MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,013 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:18:48,014 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.75ms. Allocated memory is still 81.8MB. Free memory was 58.1MB in the beginning and 55.9MB in the end (delta: 2.2MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.62ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 53.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,014 INFO L158 Benchmark]: Boogie Preprocessor took 50.09ms. Allocated memory is still 81.8MB. Free memory was 53.1MB in the beginning and 51.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,014 INFO L158 Benchmark]: RCFGBuilder took 796.74ms. Allocated memory is still 81.8MB. Free memory was 51.0MB in the beginning and 52.4MB in the end (delta: -1.4MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,015 INFO L158 Benchmark]: TraceAbstraction took 40278.36ms. Allocated memory was 81.8MB in the beginning and 790.6MB in the end (delta: 708.8MB). Free memory was 51.3MB in the beginning and 388.3MB in the end (delta: -337.0MB). Peak memory consumption was 370.7MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,015 INFO L158 Benchmark]: Witness Printer took 58.06ms. Allocated memory is still 790.6MB. Free memory was 388.3MB in the beginning and 377.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 23:18:48,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 652.75ms. Allocated memory is still 81.8MB. Free memory was 58.1MB in the beginning and 55.9MB in the end (delta: 2.2MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.62ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 53.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.09ms. Allocated memory is still 81.8MB. Free memory was 53.1MB in the beginning and 51.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 796.74ms. Allocated memory is still 81.8MB. Free memory was 51.0MB in the beginning and 52.4MB in the end (delta: -1.4MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * TraceAbstraction took 40278.36ms. Allocated memory was 81.8MB in the beginning and 790.6MB in the end (delta: 708.8MB). Free memory was 51.3MB in the beginning and 388.3MB in the end (delta: -337.0MB). Peak memory consumption was 370.7MB. Max. memory is 16.1GB. * Witness Printer took 58.06ms. Allocated memory is still 790.6MB. Free memory was 388.3MB in the beginning and 377.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 112 PlacesBefore, 35 PlacesAfterwards, 104 TransitionsBefore, 26 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 5019 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1714, independent: 1554, independent conditional: 0, independent unconditional: 1554, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 963, independent: 937, independent conditional: 0, independent unconditional: 937, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1714, independent: 617, independent conditional: 0, independent unconditional: 617, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 963, unknown conditional: 0, unknown unconditional: 963] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1873; [L845] FCALL, FORK 0 pthread_create(&t1873, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1873, ((void *)0), P0, ((void *)0))=-2, t1873={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L846] 0 pthread_t t1874; [L847] FCALL, FORK 0 pthread_create(&t1874, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1874, ((void *)0), P1, ((void *)0))=-1, t1873={5:0}, t1874={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L848] 0 pthread_t t1875; [L849] FCALL, FORK 0 pthread_create(&t1875, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1875, ((void *)0), P2, ((void *)0))=0, t1873={5:0}, t1874={6:0}, t1875={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L741] 1 y$w_buff1 = y$w_buff0 [L742] 1 y$w_buff0 = 2 [L743] 1 y$w_buff1_used = y$w_buff0_used [L744] 1 y$w_buff0_used = (_Bool)1 [L745] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L745] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L746] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L747] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L748] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L749] 1 y$r_buff1_thd3 = y$r_buff0_thd3 [L750] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=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=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L770] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=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$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L773] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=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$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L776] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L777] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L778] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L779] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L780] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=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$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L790] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L791] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L792] 3 y$flush_delayed = weak$$choice2 [L793] 3 y$mem_tmp = y [L794] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L795] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L796] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L797] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L798] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L799] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L800] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L801] 3 __unbuffered_p2_EAX = y [L802] 3 y = y$flush_delayed ? y$mem_tmp : y [L803] 3 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L806] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 3 y$flush_delayed = weak$$choice2 [L809] 3 y$mem_tmp = y [L810] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L811] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L812] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L813] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L814] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L815] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L816] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L817] 3 __unbuffered_p2_EBX = y [L818] 3 y = y$flush_delayed ? y$mem_tmp : y [L819] 3 y$flush_delayed = (_Bool)0 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L756] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L757] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L758] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L759] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L760] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=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$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L822] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L823] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L824] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L825] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L826] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L763] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L765] 1 return 0; [L829] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 3 return 0; [L851] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L853] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L853] RET 0 assume_abort_if_not(main$tmp_guard0) [L855] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L856] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L857] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L858] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L859] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1873={5:0}, t1874={6:0}, t1875={3:0}, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L862] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L863] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L864] 0 y$flush_delayed = weak$$choice2 [L865] 0 y$mem_tmp = y [L866] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L867] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L868] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L869] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L870] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L871] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L872] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 1) [L874] 0 y = y$flush_delayed ? y$mem_tmp : y [L875] 0 y$flush_delayed = (_Bool)0 [L877] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, 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$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=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: 849]: 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: 847]: 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: 845]: 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 7 procedures, 134 locations, 6 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: 40.1s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2129 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1760 mSDsluCounter, 2287 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2125 mSDsCounter, 858 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5585 IncrementalHoareTripleChecker+Invalid, 6443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 858 mSolverCounterUnsat, 162 mSDtfsCounter, 5585 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1711occurred in iteration=15, InterpolantAutomatonStates: 191, 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, 20.7s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 349 ConstructedInterpolants, 0 QuantifiedInterpolants, 5480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 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 23:18:48,044 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