/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:02:20,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:02:20,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:02:20,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:02:20,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:02:20,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:02:20,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:02:20,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:02:20,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:02:20,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:02:20,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:02:20,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:02:20,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:02:20,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:02:20,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:02:20,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:02:20,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:02:20,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:02:20,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:02:20,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:02:20,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:02:20,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:02:20,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:02:20,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:02:20,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:02:20,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:02:20,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:02:20,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:02:20,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:02:20,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:02:20,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:02:20,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:02:20,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:02:20,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:02:20,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:02:20,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:02:20,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:02:20,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:02:20,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:02:20,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:02:20,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:02:20,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:02:20,285 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:02:20,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:02:20,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:02:20,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:02:20,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:02:20,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:02:20,288 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:02:20,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:02:20,288 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:02:20,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:02:20,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:02:20,290 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:02:20,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:02:20,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:02:20,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:02:20,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:02:20,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:02:20,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:20,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:02:20,291 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:02:20,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:02:20,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:02:20,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:02:20,537 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:02:20,538 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:02:20,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:02:21,648 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:02:21,839 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:02:21,839 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:02:21,858 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f27d4f3/3da469da7bea4e4a93b5a89da070d702/FLAGbdc8029b9 [2023-01-28 07:02:21,871 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f27d4f3/3da469da7bea4e4a93b5a89da070d702 [2023-01-28 07:02:21,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:02:21,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:02:21,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:21,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:02:21,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:02:21,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:21" (1/1) ... [2023-01-28 07:02:21,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4def3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:21, skipping insertion in model container [2023-01-28 07:02:21,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:21" (1/1) ... [2023-01-28 07:02:21,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:02:21,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:02:22,098 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:02:22,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:22,284 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:02:22,297 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:02:22,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:22,368 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:22,368 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:22,375 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:02:22,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22 WrapperNode [2023-01-28 07:02:22,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:22,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:22,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:02:22,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:02:22,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,434 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 07:02:22,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:22,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:02:22,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:02:22,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:02:22,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:02:22,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:02:22,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:02:22,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:02:22,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (1/1) ... [2023-01-28 07:02:22,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:22,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:02:22,511 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) [2023-01-28 07:02:22,514 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 [2023-01-28 07:02:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:02:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:02:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:02:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:02:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:02:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:02:22,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:02:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:02:22,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:02:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:02:22,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:02:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:02:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:02:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:02:22,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:02:22,555 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:02:22,660 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:02:22,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:02:22,860 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:02:22,866 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:02:22,866 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:02:22,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:22 BoogieIcfgContainer [2023-01-28 07:02:22,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:02:22,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:02:22,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:02:22,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:02:22,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:02:21" (1/3) ... [2023-01-28 07:02:22,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad30dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:22, skipping insertion in model container [2023-01-28 07:02:22,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:22" (2/3) ... [2023-01-28 07:02:22,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad30dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:22, skipping insertion in model container [2023-01-28 07:02:22,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:22" (3/3) ... [2023-01-28 07:02:22,876 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:02:22,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:02:22,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:02:22,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:02:22,982 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:02:23,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:02:23,093 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 07:02:23,094 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-28 07:02:23,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:02:23,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 07:02:23,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:02:23,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:02:23,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:02:23,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 07:02:23,147 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 07:02:23,148 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:23,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-01-28 07:02:23,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-01-28 07:02:24,924 INFO L134 LiptonReduction]: Checked pairs total: 1620 [2023-01-28 07:02:24,924 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-01-28 07:02:24,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:02:24,942 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=false, 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;@39f7ae2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:02:24,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:02:24,951 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 07:02:24,951 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:24,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:24,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:24,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:24,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1744931790, now seen corresponding path program 1 times [2023-01-28 07:02:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555554846] [2023-01-28 07:02:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:25,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:25,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555554846] [2023-01-28 07:02:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555554846] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:25,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:02:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19453273] [2023-01-28 07:02:25,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:02:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:02:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:02:25,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-28 07:02:25,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:25,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:25,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-28 07:02:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:25,725 INFO L130 PetriNetUnfolder]: 222/384 cut-off events. [2023-01-28 07:02:25,725 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 07:02:25,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 384 events. 222/384 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1491 event pairs, 69 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 772. Up to 340 conditions per place. [2023-01-28 07:02:25,731 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2023-01-28 07:02:25,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 113 flow [2023-01-28 07:02:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:02:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:02:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-01-28 07:02:25,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-01-28 07:02:25,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-01-28 07:02:25,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-01-28 07:02:25,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:25,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-01-28 07:02:25,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:25,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:25,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:25,757 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 238 transitions. [2023-01-28 07:02:25,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 113 flow [2023-01-28 07:02:25,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:02:25,761 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2023-01-28 07:02:25,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-28 07:02:25,769 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-28 07:02:25,769 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2023-01-28 07:02:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:25,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:25,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:25,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:02:25,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:25,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1741688772, now seen corresponding path program 1 times [2023-01-28 07:02:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839757257] [2023-01-28 07:02:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:25,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:25,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839757257] [2023-01-28 07:02:25,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839757257] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:25,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891001143] [2023-01-28 07:02:25,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:25,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-28 07:02:25,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:25,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:25,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-28 07:02:25,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:26,057 INFO L130 PetriNetUnfolder]: 201/354 cut-off events. [2023-01-28 07:02:26,057 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-28 07:02:26,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 354 events. 201/354 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1295 event pairs, 75 based on Foata normal form. 9/363 useless extension candidates. Maximal degree in co-relation 812. Up to 211 conditions per place. [2023-01-28 07:02:26,062 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-01-28 07:02:26,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 111 flow [2023-01-28 07:02:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:02:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:02:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-01-28 07:02:26,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-01-28 07:02:26,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-01-28 07:02:26,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-01-28 07:02:26,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:26,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-01-28 07:02:26,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,072 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 235 transitions. [2023-01-28 07:02:26,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 111 flow [2023-01-28 07:02:26,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:02:26,074 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 65 flow [2023-01-28 07:02:26,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-01-28 07:02:26,075 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-01-28 07:02:26,075 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 65 flow [2023-01-28 07:02:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:26,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:26,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:02:26,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:26,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1741688090, now seen corresponding path program 1 times [2023-01-28 07:02:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:26,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664854765] [2023-01-28 07:02:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664854765] [2023-01-28 07:02:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664854765] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:26,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:26,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:02:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830458520] [2023-01-28 07:02:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:26,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:02:26,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:26,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:02:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:02:26,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 140 [2023-01-28 07:02:26,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:26,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 140 [2023-01-28 07:02:26,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:26,319 INFO L130 PetriNetUnfolder]: 130/253 cut-off events. [2023-01-28 07:02:26,320 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 07:02:26,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 253 events. 130/253 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 990 event pairs, 44 based on Foata normal form. 6/259 useless extension candidates. Maximal degree in co-relation 598. Up to 175 conditions per place. [2023-01-28 07:02:26,322 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 21 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-01-28 07:02:26,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 133 flow [2023-01-28 07:02:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:02:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:02:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-01-28 07:02:26,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2023-01-28 07:02:26,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-01-28 07:02:26,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-01-28 07:02:26,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:26,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-01-28 07:02:26,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,327 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 65 flow. Second operand 3 states and 249 transitions. [2023-01-28 07:02:26,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 133 flow [2023-01-28 07:02:26,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:26,328 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 70 flow [2023-01-28 07:02:26,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-01-28 07:02:26,330 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-01-28 07:02:26,332 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 70 flow [2023-01-28 07:02:26,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:26,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:26,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:02:26,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:26,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1842224184, now seen corresponding path program 1 times [2023-01-28 07:02:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417899016] [2023-01-28 07:02:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:26,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:26,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417899016] [2023-01-28 07:02:26,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417899016] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:26,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:26,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:26,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489559933] [2023-01-28 07:02:26,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:26,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:26,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-28 07:02:26,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:26,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-28 07:02:26,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:26,615 INFO L130 PetriNetUnfolder]: 248/436 cut-off events. [2023-01-28 07:02:26,615 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-01-28 07:02:26,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 436 events. 248/436 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1881 event pairs, 39 based on Foata normal form. 18/451 useless extension candidates. Maximal degree in co-relation 1083. Up to 221 conditions per place. [2023-01-28 07:02:26,619 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 32 selfloop transitions, 11 changer transitions 2/46 dead transitions. [2023-01-28 07:02:26,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 251 flow [2023-01-28 07:02:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-28 07:02:26,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-01-28 07:02:26,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-28 07:02:26,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-28 07:02:26,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:26,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-28 07:02:26,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,629 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 70 flow. Second operand 5 states and 390 transitions. [2023-01-28 07:02:26,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 251 flow [2023-01-28 07:02:26,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:26,631 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 147 flow [2023-01-28 07:02:26,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-28 07:02:26,633 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-01-28 07:02:26,633 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 147 flow [2023-01-28 07:02:26,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:26,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:26,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:02:26,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:26,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1842244644, now seen corresponding path program 2 times [2023-01-28 07:02:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698438117] [2023-01-28 07:02:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698438117] [2023-01-28 07:02:26,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698438117] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:26,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:26,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592671566] [2023-01-28 07:02:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:26,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:26,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-28 07:02:26,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:26,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-28 07:02:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:26,888 INFO L130 PetriNetUnfolder]: 263/472 cut-off events. [2023-01-28 07:02:26,889 INFO L131 PetriNetUnfolder]: For 621/621 co-relation queries the response was YES. [2023-01-28 07:02:26,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 472 events. 263/472 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2095 event pairs, 77 based on Foata normal form. 18/488 useless extension candidates. Maximal degree in co-relation 1406. Up to 232 conditions per place. [2023-01-28 07:02:26,891 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 23 selfloop transitions, 5 changer transitions 8/37 dead transitions. [2023-01-28 07:02:26,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 251 flow [2023-01-28 07:02:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-01-28 07:02:26,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482142857142858 [2023-01-28 07:02:26,893 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-01-28 07:02:26,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-01-28 07:02:26,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:26,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-01-28 07:02:26,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,896 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 147 flow. Second operand 4 states and 307 transitions. [2023-01-28 07:02:26,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 251 flow [2023-01-28 07:02:26,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 249 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:26,901 INFO L231 Difference]: Finished difference. Result has 39 places, 20 transitions, 124 flow [2023-01-28 07:02:26,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=20} [2023-01-28 07:02:26,903 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-01-28 07:02:26,903 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 20 transitions, 124 flow [2023-01-28 07:02:26,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:26,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:26,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:26,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:02:26,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:26,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:26,905 INFO L85 PathProgramCache]: Analyzing trace with hash 356602977, now seen corresponding path program 1 times [2023-01-28 07:02:26,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:26,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704986455] [2023-01-28 07:02:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704986455] [2023-01-28 07:02:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704986455] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:27,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604488601] [2023-01-28 07:02:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:27,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:27,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:27,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-28 07:02:27,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 20 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:27,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-28 07:02:27,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:27,085 INFO L130 PetriNetUnfolder]: 195/336 cut-off events. [2023-01-28 07:02:27,085 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-01-28 07:02:27,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 336 events. 195/336 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1075 event pairs, 87 based on Foata normal form. 18/354 useless extension candidates. Maximal degree in co-relation 1100. Up to 164 conditions per place. [2023-01-28 07:02:27,087 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 18 selfloop transitions, 3 changer transitions 9/30 dead transitions. [2023-01-28 07:02:27,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 217 flow [2023-01-28 07:02:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:27,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-01-28 07:02:27,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2023-01-28 07:02:27,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-01-28 07:02:27,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-01-28 07:02:27,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:27,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-01-28 07:02:27,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,092 INFO L175 Difference]: Start difference. First operand has 39 places, 20 transitions, 124 flow. Second operand 4 states and 304 transitions. [2023-01-28 07:02:27,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 217 flow [2023-01-28 07:02:27,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 192 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-28 07:02:27,094 INFO L231 Difference]: Finished difference. Result has 38 places, 16 transitions, 88 flow [2023-01-28 07:02:27,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=16} [2023-01-28 07:02:27,095 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-28 07:02:27,095 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 16 transitions, 88 flow [2023-01-28 07:02:27,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:27,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:02:27,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:27,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -439876128, now seen corresponding path program 1 times [2023-01-28 07:02:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:27,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098138074] [2023-01-28 07:02:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098138074] [2023-01-28 07:02:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098138074] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:27,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:27,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:27,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823754358] [2023-01-28 07:02:27,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:27,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:27,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:27,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-28 07:02:27,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 16 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:27,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-28 07:02:27,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:27,256 INFO L130 PetriNetUnfolder]: 56/125 cut-off events. [2023-01-28 07:02:27,257 INFO L131 PetriNetUnfolder]: For 595/597 co-relation queries the response was YES. [2023-01-28 07:02:27,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 125 events. 56/125 cut-off events. For 595/597 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 384 event pairs, 23 based on Foata normal form. 10/134 useless extension candidates. Maximal degree in co-relation 423. Up to 73 conditions per place. [2023-01-28 07:02:27,258 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 17 selfloop transitions, 4 changer transitions 12/35 dead transitions. [2023-01-28 07:02:27,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 241 flow [2023-01-28 07:02:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-28 07:02:27,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-01-28 07:02:27,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-28 07:02:27,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-28 07:02:27,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:27,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-28 07:02:27,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,263 INFO L175 Difference]: Start difference. First operand has 38 places, 16 transitions, 88 flow. Second operand 5 states and 390 transitions. [2023-01-28 07:02:27,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 241 flow [2023-01-28 07:02:27,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 174 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-01-28 07:02:27,265 INFO L231 Difference]: Finished difference. Result has 34 places, 19 transitions, 92 flow [2023-01-28 07:02:27,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2023-01-28 07:02:27,265 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-01-28 07:02:27,266 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 92 flow [2023-01-28 07:02:27,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:27,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:02:27,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:27,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1952189162, now seen corresponding path program 1 times [2023-01-28 07:02:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301089717] [2023-01-28 07:02:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:27,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301089717] [2023-01-28 07:02:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301089717] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:27,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:27,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:27,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929067819] [2023-01-28 07:02:27,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:27,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-28 07:02:27,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:27,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-28 07:02:27,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:27,459 INFO L130 PetriNetUnfolder]: 32/81 cut-off events. [2023-01-28 07:02:27,459 INFO L131 PetriNetUnfolder]: For 229/252 co-relation queries the response was YES. [2023-01-28 07:02:27,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 81 events. 32/81 cut-off events. For 229/252 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 214 event pairs, 5 based on Foata normal form. 14/94 useless extension candidates. Maximal degree in co-relation 295. Up to 48 conditions per place. [2023-01-28 07:02:27,459 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 18 selfloop transitions, 7 changer transitions 10/37 dead transitions. [2023-01-28 07:02:27,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 246 flow [2023-01-28 07:02:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:02:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:02:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2023-01-28 07:02:27,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511904761904762 [2023-01-28 07:02:27,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2023-01-28 07:02:27,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2023-01-28 07:02:27,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:27,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2023-01-28 07:02:27,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,464 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,465 INFO L175 Difference]: Start difference. First operand has 34 places, 19 transitions, 92 flow. Second operand 6 states and 463 transitions. [2023-01-28 07:02:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 246 flow [2023-01-28 07:02:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:27,466 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 142 flow [2023-01-28 07:02:27,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2023-01-28 07:02:27,467 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-28 07:02:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 142 flow [2023-01-28 07:02:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:27,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:27,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:02:27,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:27,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 387879697, now seen corresponding path program 1 times [2023-01-28 07:02:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852549291] [2023-01-28 07:02:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852549291] [2023-01-28 07:02:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852549291] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:27,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:27,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:02:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514813276] [2023-01-28 07:02:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:27,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:02:27,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:02:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:02:27,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-28 07:02:27,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:27,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-28 07:02:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:27,656 INFO L130 PetriNetUnfolder]: 17/50 cut-off events. [2023-01-28 07:02:27,656 INFO L131 PetriNetUnfolder]: For 173/191 co-relation queries the response was YES. [2023-01-28 07:02:27,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 50 events. 17/50 cut-off events. For 173/191 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 2 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 206. Up to 28 conditions per place. [2023-01-28 07:02:27,657 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 15 selfloop transitions, 10 changer transitions 5/32 dead transitions. [2023-01-28 07:02:27,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 257 flow [2023-01-28 07:02:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:02:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:02:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 529 transitions. [2023-01-28 07:02:27,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539795918367347 [2023-01-28 07:02:27,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 529 transitions. [2023-01-28 07:02:27,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 529 transitions. [2023-01-28 07:02:27,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:27,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 529 transitions. [2023-01-28 07:02:27,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,663 INFO L175 Difference]: Start difference. First operand has 38 places, 22 transitions, 142 flow. Second operand 7 states and 529 transitions. [2023-01-28 07:02:27,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 257 flow [2023-01-28 07:02:27,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 217 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-01-28 07:02:27,665 INFO L231 Difference]: Finished difference. Result has 41 places, 22 transitions, 140 flow [2023-01-28 07:02:27,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=22} [2023-01-28 07:02:27,666 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-28 07:02:27,666 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 22 transitions, 140 flow [2023-01-28 07:02:27,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:27,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:02:27,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:27,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash 807289790, now seen corresponding path program 1 times [2023-01-28 07:02:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:27,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993081987] [2023-01-28 07:02:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:27,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:27,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993081987] [2023-01-28 07:02:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993081987] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:27,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564086619] [2023-01-28 07:02:27,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:27,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:27,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-28 07:02:27,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 22 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:27,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-28 07:02:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:27,855 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2023-01-28 07:02:27,855 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-01-28 07:02:27,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 49 events. 18/49 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 3 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 189. Up to 27 conditions per place. [2023-01-28 07:02:27,855 INFO L137 encePairwiseOnDemand]: 135/140 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-01-28 07:02:27,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 214 flow [2023-01-28 07:02:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 364 transitions. [2023-01-28 07:02:27,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-01-28 07:02:27,857 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 364 transitions. [2023-01-28 07:02:27,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 364 transitions. [2023-01-28 07:02:27,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:27,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 364 transitions. [2023-01-28 07:02:27,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,860 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,860 INFO L175 Difference]: Start difference. First operand has 41 places, 22 transitions, 140 flow. Second operand 5 states and 364 transitions. [2023-01-28 07:02:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 214 flow [2023-01-28 07:02:27,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 170 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-01-28 07:02:27,861 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-01-28 07:02:27,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-01-28 07:02:27,862 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-01-28 07:02:27,863 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-01-28 07:02:27,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:27,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:02:27,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:02:27,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:02:27,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:02:27,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:02:27,867 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:27,870 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:02:27,870 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:02:27,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:02:27 BasicIcfg [2023-01-28 07:02:27,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:02:27,875 INFO L158 Benchmark]: Toolchain (without parser) took 5999.70ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 326.1MB in the beginning and 274.3MB in the end (delta: 51.8MB). Peak memory consumption was 126.6MB. Max. memory is 16.0GB. [2023-01-28 07:02:27,875 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:02:27,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.19ms. Allocated memory is still 367.0MB. Free memory was 325.8MB in the beginning and 305.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:02:27,876 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.69ms. Allocated memory is still 367.0MB. Free memory was 305.8MB in the beginning and 303.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:27,876 INFO L158 Benchmark]: Boogie Preprocessor took 37.95ms. Allocated memory is still 367.0MB. Free memory was 303.8MB in the beginning and 302.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:27,876 INFO L158 Benchmark]: RCFGBuilder took 395.22ms. Allocated memory is still 367.0MB. Free memory was 302.4MB in the beginning and 288.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 07:02:27,877 INFO L158 Benchmark]: TraceAbstraction took 5004.17ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 288.0MB in the beginning and 274.3MB in the end (delta: 13.7MB). Peak memory consumption was 88.9MB. Max. memory is 16.0GB. [2023-01-28 07:02:27,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 499.19ms. Allocated memory is still 367.0MB. Free memory was 325.8MB in the beginning and 305.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.69ms. Allocated memory is still 367.0MB. Free memory was 305.8MB in the beginning and 303.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.95ms. Allocated memory is still 367.0MB. Free memory was 303.8MB in the beginning and 302.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 395.22ms. Allocated memory is still 367.0MB. Free memory was 302.4MB in the beginning and 288.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5004.17ms. Allocated memory was 367.0MB in the beginning and 440.4MB in the end (delta: 73.4MB). Free memory was 288.0MB in the beginning and 274.3MB in the end (delta: 13.7MB). Peak memory consumption was 88.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 78 PlacesBefore, 26 PlacesAfterwards, 69 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 924, independent: 858, independent conditional: 0, independent unconditional: 858, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 534, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 924, independent: 346, independent conditional: 0, independent unconditional: 346, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 534, unknown conditional: 0, unknown unconditional: 534] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 4 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=4, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:02:27,903 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...