/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/weaver/unroll-cond-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:14:57,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:14:57,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:14:57,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:14:57,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:14:57,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:14:57,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:14:57,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:14:57,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:14:57,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:14:57,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:14:57,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:14:57,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:14:57,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:14:57,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:14:57,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:14:57,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:14:57,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:14:57,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:14:57,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:14:57,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:14:57,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:14:57,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:14:57,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:14:57,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:14:57,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:14:57,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:14:57,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:14:57,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:14:57,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:14:57,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:14:57,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:14:57,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:14:57,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:14:57,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:14:57,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:14:57,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:14:57,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:14:57,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:14:57,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:14:57,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:14:57,525 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 12:14:57,562 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:14:57,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:14:57,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:14:57,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:14:57,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:14:57,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:14:57,565 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:14:57,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:14:57,565 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:14:57,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:14:57,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:14:57,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:14:57,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:14:57,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:14:57,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:14:57,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:14:57,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:14:57,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:14:57,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:14:57,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:14:57,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:14:57,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:14:57,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:14:57,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:14:57,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:14:57,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:14:57,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:14:57,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:14:57,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:14:57,808 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:14:57,811 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:14:57,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-01-28 12:14:59,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:14:59,178 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:14:59,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-01-28 12:14:59,184 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f69b2fd2/e6f377f84ea3442c9c0f9946c71dbbec/FLAGcb44d2d0e [2023-01-28 12:14:59,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f69b2fd2/e6f377f84ea3442c9c0f9946c71dbbec [2023-01-28 12:14:59,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:14:59,197 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:14:59,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:14:59,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:14:59,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:14:59,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f14d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59, skipping insertion in model container [2023-01-28 12:14:59,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:14:59,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:14:59,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2023-01-28 12:14:59,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:14:59,376 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:14:59,395 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2023-01-28 12:14:59,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:14:59,409 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:14:59,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59 WrapperNode [2023-01-28 12:14:59,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:14:59,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:14:59,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:14:59,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:14:59,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,451 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 186 [2023-01-28 12:14:59,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:14:59,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:14:59,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:14:59,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:14:59,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:14:59,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:14:59,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:14:59,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:14:59,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (1/1) ... [2023-01-28 12:14:59,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:14:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:14:59,518 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 12:14:59,529 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 12:14:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:14:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:14:59,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:14:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:14:59,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:14:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:14:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:14:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:14:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 12:14:59,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:14:59,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:14:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:14:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:14:59,567 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 12:14:59,678 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:14:59,680 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:14:59,998 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:15:00,007 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:15:00,007 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 12:15:00,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:15:00 BoogieIcfgContainer [2023-01-28 12:15:00,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:15:00,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:15:00,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:15:00,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:15:00,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:14:59" (1/3) ... [2023-01-28 12:15:00,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d7e056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:15:00, skipping insertion in model container [2023-01-28 12:15:00,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:14:59" (2/3) ... [2023-01-28 12:15:00,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d7e056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:15:00, skipping insertion in model container [2023-01-28 12:15:00,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:15:00" (3/3) ... [2023-01-28 12:15:00,016 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2023-01-28 12:15:00,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:15:00,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:15:00,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:15:00,141 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:15:00,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 222 transitions, 460 flow [2023-01-28 12:15:00,267 INFO L130 PetriNetUnfolder]: 21/220 cut-off events. [2023-01-28 12:15:00,268 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:00,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 21/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 376 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-01-28 12:15:00,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 222 transitions, 460 flow [2023-01-28 12:15:00,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 212 transitions, 436 flow [2023-01-28 12:15:00,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:15:00,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 212 transitions, 436 flow [2023-01-28 12:15:00,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 212 transitions, 436 flow [2023-01-28 12:15:00,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 212 transitions, 436 flow [2023-01-28 12:15:00,379 INFO L130 PetriNetUnfolder]: 21/212 cut-off events. [2023-01-28 12:15:00,379 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:00,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 21/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 357 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-01-28 12:15:00,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 5492 [2023-01-28 12:15:09,439 INFO L134 LiptonReduction]: Checked pairs total: 5306 [2023-01-28 12:15:09,439 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-01-28 12:15:09,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:15:09,457 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;@38266dff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:15:09,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:15:09,463 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 12:15:09,463 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:09,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:09,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:09,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:09,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash 23434036, now seen corresponding path program 1 times [2023-01-28 12:15:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720349243] [2023-01-28 12:15:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:09,902 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 12:15:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720349243] [2023-01-28 12:15:09,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720349243] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:09,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:09,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:15:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538582683] [2023-01-28 12:15:09,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:09,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:15:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:09,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:15:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:15:09,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-01-28 12:15:09,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 12:15:09,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:09,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-01-28 12:15:09,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:09,984 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-28 12:15:09,984 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 12:15:09,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 201 event pairs, 19 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-28 12:15:09,986 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 12:15:09,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 12:15:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:15:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:15:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-01-28 12:15:10,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41316526610644255 [2023-01-28 12:15:10,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-01-28 12:15:10,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-01-28 12:15:10,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:10,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-01-28 12:15:10,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:10,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 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 12:15:10,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 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 12:15:10,028 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 590 transitions. [2023-01-28 12:15:10,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 12:15:10,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:15:10,032 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 12:15:10,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 12:15:10,041 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 12:15:10,041 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 12:15:10,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 12:15:10,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:10,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:10,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:15:10,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:10,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:10,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1325837020, now seen corresponding path program 1 times [2023-01-28 12:15:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:10,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591853095] [2023-01-28 12:15:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:10,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:10,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591853095] [2023-01-28 12:15:10,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591853095] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:10,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:10,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:10,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411676645] [2023-01-28 12:15:10,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:10,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-28 12:15:10,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:10,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:10,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-28 12:15:10,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:11,071 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-01-28 12:15:11,071 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 369 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-01-28 12:15:11,072 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-01-28 12:15:11,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-01-28 12:15:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 900 transitions. [2023-01-28 12:15:11,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2023-01-28 12:15:11,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 900 transitions. [2023-01-28 12:15:11,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 900 transitions. [2023-01-28 12:15:11,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:11,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 900 transitions. [2023-01-28 12:15:11,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 12:15:11,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:11,083 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:11,083 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 900 transitions. [2023-01-28 12:15:11,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-01-28 12:15:11,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:11,084 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-01-28 12:15:11,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-28 12:15:11,085 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-28 12:15:11,085 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-01-28 12:15:11,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:11,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:11,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:11,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:15:11,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:11,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash -777538468, now seen corresponding path program 2 times [2023-01-28 12:15:11,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:11,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613721167] [2023-01-28 12:15:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:11,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:11,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:11,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613721167] [2023-01-28 12:15:11,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613721167] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:11,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:11,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:11,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767071300] [2023-01-28 12:15:11,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:11,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:11,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-28 12:15:11,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:11,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:11,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-28 12:15:11,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:11,662 INFO L130 PetriNetUnfolder]: 109/198 cut-off events. [2023-01-28 12:15:11,663 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2023-01-28 12:15:11,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 198 events. 109/198 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 591 event pairs, 24 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 560. Up to 87 conditions per place. [2023-01-28 12:15:11,666 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 40 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2023-01-28 12:15:11,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 52 transitions, 292 flow [2023-01-28 12:15:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:15:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:15:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1080 transitions. [2023-01-28 12:15:11,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2023-01-28 12:15:11,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1080 transitions. [2023-01-28 12:15:11,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1080 transitions. [2023-01-28 12:15:11,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:11,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1080 transitions. [2023-01-28 12:15:11,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 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 12:15:11,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 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 12:15:11,679 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 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 12:15:11,680 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 6 states and 1080 transitions. [2023-01-28 12:15:11,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 52 transitions, 292 flow [2023-01-28 12:15:11,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 275 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:11,683 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 163 flow [2023-01-28 12:15:11,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-01-28 12:15:11,685 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-01-28 12:15:11,687 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 163 flow [2023-01-28 12:15:11,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:11,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:11,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:11,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:15:11,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:11,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:11,690 INFO L85 PathProgramCache]: Analyzing trace with hash 579336880, now seen corresponding path program 3 times [2023-01-28 12:15:11,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:11,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895401030] [2023-01-28 12:15:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:11,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895401030] [2023-01-28 12:15:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895401030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:11,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120485736] [2023-01-28 12:15:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:11,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:11,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-28 12:15:11,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:11,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:11,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-28 12:15:11,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:12,105 INFO L130 PetriNetUnfolder]: 119/214 cut-off events. [2023-01-28 12:15:12,106 INFO L131 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2023-01-28 12:15:12,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 214 events. 119/214 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 684 event pairs, 28 based on Foata normal form. 4/187 useless extension candidates. Maximal degree in co-relation 778. Up to 111 conditions per place. [2023-01-28 12:15:12,108 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 40 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2023-01-28 12:15:12,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 376 flow [2023-01-28 12:15:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 901 transitions. [2023-01-28 12:15:12,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2023-01-28 12:15:12,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 901 transitions. [2023-01-28 12:15:12,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 901 transitions. [2023-01-28 12:15:12,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:12,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 901 transitions. [2023-01-28 12:15:12,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.2) internal successors, (901), 5 states have internal predecessors, (901), 0 states have call successors, (0), 0 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 12:15:12,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:12,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:12,122 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 163 flow. Second operand 5 states and 901 transitions. [2023-01-28 12:15:12,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 376 flow [2023-01-28 12:15:12,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 362 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-01-28 12:15:12,129 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 255 flow [2023-01-28 12:15:12,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-01-28 12:15:12,132 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-01-28 12:15:12,132 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 255 flow [2023-01-28 12:15:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:12,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:12,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:12,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 12:15:12,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:12,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash -149932496, now seen corresponding path program 4 times [2023-01-28 12:15:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:12,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568191696] [2023-01-28 12:15:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:12,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568191696] [2023-01-28 12:15:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568191696] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:12,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617317312] [2023-01-28 12:15:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:12,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-28 12:15:12,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:12,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:12,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-28 12:15:12,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:12,457 INFO L130 PetriNetUnfolder]: 115/210 cut-off events. [2023-01-28 12:15:12,457 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2023-01-28 12:15:12,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 210 events. 115/210 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 664 event pairs, 36 based on Foata normal form. 4/189 useless extension candidates. Maximal degree in co-relation 848. Up to 167 conditions per place. [2023-01-28 12:15:12,459 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 33 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2023-01-28 12:15:12,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 430 flow [2023-01-28 12:15:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2023-01-28 12:15:12,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760504201680672 [2023-01-28 12:15:12,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2023-01-28 12:15:12,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2023-01-28 12:15:12,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:12,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2023-01-28 12:15:12,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 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 12:15:12,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:12,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:12,467 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 255 flow. Second operand 5 states and 895 transitions. [2023-01-28 12:15:12,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 430 flow [2023-01-28 12:15:12,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 414 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:12,471 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 347 flow [2023-01-28 12:15:12,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-01-28 12:15:12,471 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-01-28 12:15:12,471 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 347 flow [2023-01-28 12:15:12,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:12,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:12,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:12,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 12:15:12,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:12,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash -861950526, now seen corresponding path program 5 times [2023-01-28 12:15:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:12,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417315162] [2023-01-28 12:15:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:12,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417315162] [2023-01-28 12:15:12,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417315162] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:12,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:12,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:12,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212498595] [2023-01-28 12:15:12,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:12,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:12,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:12,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-28 12:15:12,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:12,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:12,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-28 12:15:12,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:12,840 INFO L130 PetriNetUnfolder]: 116/213 cut-off events. [2023-01-28 12:15:12,840 INFO L131 PetriNetUnfolder]: For 616/616 co-relation queries the response was YES. [2023-01-28 12:15:12,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 213 events. 116/213 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 688 event pairs, 24 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 920. Up to 113 conditions per place. [2023-01-28 12:15:12,841 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 41 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2023-01-28 12:15:12,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 503 flow [2023-01-28 12:15:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2023-01-28 12:15:12,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777310924369748 [2023-01-28 12:15:12,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2023-01-28 12:15:12,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2023-01-28 12:15:12,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:12,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2023-01-28 12:15:12,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 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 12:15:12,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:12,850 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:12,850 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 347 flow. Second operand 5 states and 899 transitions. [2023-01-28 12:15:12,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 503 flow [2023-01-28 12:15:12,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 460 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:12,854 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 344 flow [2023-01-28 12:15:12,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-01-28 12:15:12,855 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 29 predicate places. [2023-01-28 12:15:12,855 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 344 flow [2023-01-28 12:15:12,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:12,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:12,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:12,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 12:15:12,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:12,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1591219902, now seen corresponding path program 6 times [2023-01-28 12:15:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:12,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882565884] [2023-01-28 12:15:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:12,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:13,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:13,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882565884] [2023-01-28 12:15:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882565884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850742606] [2023-01-28 12:15:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:13,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:13,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-28 12:15:13,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:13,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:13,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-28 12:15:13,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:13,218 INFO L130 PetriNetUnfolder]: 115/206 cut-off events. [2023-01-28 12:15:13,219 INFO L131 PetriNetUnfolder]: For 707/707 co-relation queries the response was YES. [2023-01-28 12:15:13,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 206 events. 115/206 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 636 event pairs, 35 based on Foata normal form. 2/183 useless extension candidates. Maximal degree in co-relation 884. Up to 160 conditions per place. [2023-01-28 12:15:13,220 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-01-28 12:15:13,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 472 flow [2023-01-28 12:15:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2023-01-28 12:15:13,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760504201680672 [2023-01-28 12:15:13,223 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2023-01-28 12:15:13,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2023-01-28 12:15:13,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:13,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2023-01-28 12:15:13,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 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 12:15:13,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:13,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 12:15:13,230 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 344 flow. Second operand 5 states and 895 transitions. [2023-01-28 12:15:13,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 472 flow [2023-01-28 12:15:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 438 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 12:15:13,234 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 350 flow [2023-01-28 12:15:13,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-01-28 12:15:13,236 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 31 predicate places. [2023-01-28 12:15:13,236 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 350 flow [2023-01-28 12:15:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 12:15:13,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:13,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:13,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:15:13,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:13,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1586382571, now seen corresponding path program 1 times [2023-01-28 12:15:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:13,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483381719] [2023-01-28 12:15:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483381719] [2023-01-28 12:15:13,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483381719] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:15:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301871554] [2023-01-28 12:15:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:15:13,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:15:13,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:15:13,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:15:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:13,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 12:15:13,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:15:13,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:15:13,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:15:13,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:15:15,291 INFO L321 Elim1Store]: treesize reduction 159, result has 14.1 percent of original size [2023-01-28 12:15:15,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 638 treesize of output 387 [2023-01-28 12:15:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:15:16,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:15:24,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:24,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 568 treesize of output 328 [2023-01-28 12:15:24,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:24,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 1744 treesize of output 1536 [2023-01-28 12:15:24,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:24,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 393 treesize of output 269 [2023-01-28 12:15:25,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:25,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 274 treesize of output 276 [2023-01-28 12:15:31,788 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:31,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 328 treesize of output 196 [2023-01-28 12:15:31,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:31,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 1090 treesize of output 982 [2023-01-28 12:15:31,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:31,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 245 treesize of output 185 [2023-01-28 12:15:32,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:15:32,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 190 [2023-01-28 12:15:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:15:32,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301871554] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:15:32,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:15:32,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-01-28 12:15:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858931480] [2023-01-28 12:15:32,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:15:32,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:15:32,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:15:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=236, Unknown=5, NotChecked=0, Total=306 [2023-01-28 12:15:32,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 476 [2023-01-28 12:15:32,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 350 flow. Second operand has 18 states, 18 states have (on average 87.66666666666667) internal successors, (1578), 18 states have internal predecessors, (1578), 0 states have call successors, (0), 0 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 12:15:32,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:32,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 476 [2023-01-28 12:15:32,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:41,030 WARN L222 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:15:49,770 WARN L222 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:15:52,224 INFO L130 PetriNetUnfolder]: 403/726 cut-off events. [2023-01-28 12:15:52,224 INFO L131 PetriNetUnfolder]: For 1970/1970 co-relation queries the response was YES. [2023-01-28 12:15:52,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 726 events. 403/726 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3334 event pairs, 22 based on Foata normal form. 8/608 useless extension candidates. Maximal degree in co-relation 2363. Up to 221 conditions per place. [2023-01-28 12:15:52,228 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 83 selfloop transitions, 41 changer transitions 79/203 dead transitions. [2023-01-28 12:15:52,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 203 transitions, 1636 flow [2023-01-28 12:15:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:15:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:15:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2128 transitions. [2023-01-28 12:15:52,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19437340153452684 [2023-01-28 12:15:52,236 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2128 transitions. [2023-01-28 12:15:52,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2128 transitions. [2023-01-28 12:15:52,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:52,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2128 transitions. [2023-01-28 12:15:52,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 92.52173913043478) internal successors, (2128), 23 states have internal predecessors, (2128), 0 states have call successors, (0), 0 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 12:15:52,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 476.0) internal successors, (11424), 24 states have internal predecessors, (11424), 0 states have call successors, (0), 0 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 12:15:52,254 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 476.0) internal successors, (11424), 24 states have internal predecessors, (11424), 0 states have call successors, (0), 0 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 12:15:52,254 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 350 flow. Second operand 23 states and 2128 transitions. [2023-01-28 12:15:52,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 203 transitions, 1636 flow [2023-01-28 12:15:52,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 203 transitions, 1558 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 12:15:52,263 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 640 flow [2023-01-28 12:15:52,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=640, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2023-01-28 12:15:52,264 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 64 predicate places. [2023-01-28 12:15:52,264 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 640 flow [2023-01-28 12:15:52,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.66666666666667) internal successors, (1578), 18 states have internal predecessors, (1578), 0 states have call successors, (0), 0 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 12:15:52,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:52,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:52,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 12:15:52,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:15:52,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:52,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1428326089, now seen corresponding path program 1 times [2023-01-28 12:15:52,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:52,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339538337] [2023-01-28 12:15:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:52,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:52,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339538337] [2023-01-28 12:15:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339538337] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:15:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086899134] [2023-01-28 12:15:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:52,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:15:52,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:15:52,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:15:52,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:15:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:52,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 12:15:52,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:15:53,558 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-01-28 12:15:53,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 327 treesize of output 306 [2023-01-28 12:15:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:15:53,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:15:58,825 INFO L321 Elim1Store]: treesize reduction 5, result has 92.3 percent of original size [2023-01-28 12:15:58,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 91 [2023-01-28 12:15:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:15:59,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086899134] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:15:59,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:15:59,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 12:15:59,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263107896] [2023-01-28 12:15:59,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:15:59,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 12:15:59,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 12:15:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-01-28 12:15:59,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 476 [2023-01-28 12:15:59,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 640 flow. Second operand has 20 states, 20 states have (on average 122.4) internal successors, (2448), 20 states have internal predecessors, (2448), 0 states have call successors, (0), 0 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 12:15:59,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:59,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 476 [2023-01-28 12:15:59,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:16:09,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:16:14,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:16:17,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:16:20,566 INFO L130 PetriNetUnfolder]: 672/1235 cut-off events. [2023-01-28 12:16:20,566 INFO L131 PetriNetUnfolder]: For 5656/5656 co-relation queries the response was YES. [2023-01-28 12:16:20,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1235 events. 672/1235 cut-off events. For 5656/5656 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6555 event pairs, 41 based on Foata normal form. 20/1252 useless extension candidates. Maximal degree in co-relation 5677. Up to 337 conditions per place. [2023-01-28 12:16:20,575 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 140 selfloop transitions, 105 changer transitions 82/327 dead transitions. [2023-01-28 12:16:20,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 327 transitions, 3026 flow [2023-01-28 12:16:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-28 12:16:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-28 12:16:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5183 transitions. [2023-01-28 12:16:20,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.265576962492314 [2023-01-28 12:16:20,617 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5183 transitions. [2023-01-28 12:16:20,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5183 transitions. [2023-01-28 12:16:20,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:16:20,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5183 transitions. [2023-01-28 12:16:20,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 126.41463414634147) internal successors, (5183), 41 states have internal predecessors, (5183), 0 states have call successors, (0), 0 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 12:16:20,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 476.0) internal successors, (19992), 42 states have internal predecessors, (19992), 0 states have call successors, (0), 0 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 12:16:20,660 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 476.0) internal successors, (19992), 42 states have internal predecessors, (19992), 0 states have call successors, (0), 0 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 12:16:20,660 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 640 flow. Second operand 41 states and 5183 transitions. [2023-01-28 12:16:20,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 327 transitions, 3026 flow [2023-01-28 12:16:20,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 327 transitions, 2766 flow, removed 86 selfloop flow, removed 10 redundant places. [2023-01-28 12:16:20,680 INFO L231 Difference]: Finished difference. Result has 129 places, 138 transitions, 1691 flow [2023-01-28 12:16:20,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1691, PETRI_PLACES=129, PETRI_TRANSITIONS=138} [2023-01-28 12:16:20,681 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 108 predicate places. [2023-01-28 12:16:20,681 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 138 transitions, 1691 flow [2023-01-28 12:16:20,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 122.4) internal successors, (2448), 20 states have internal predecessors, (2448), 0 states have call successors, (0), 0 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 12:16:20,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:16:20,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:16:20,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 12:16:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-01-28 12:16:20,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:16:20,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:16:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash 662480889, now seen corresponding path program 2 times [2023-01-28 12:16:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:16:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531530769] [2023-01-28 12:16:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:16:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:16:21,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:16:21,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531530769] [2023-01-28 12:16:21,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531530769] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:16:21,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097016064] [2023-01-28 12:16:21,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:16:21,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:16:21,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:16:21,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:16:21,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 12:16:21,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:16:21,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:16:21,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 12:16:21,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:16:21,790 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-01-28 12:16:21,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 327 treesize of output 306 [2023-01-28 12:16:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:16:22,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:16:28,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:16:28,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 460 treesize of output 341 [2023-01-28 12:22:40,864 WARN L222 SmtUtils]: Spent 6.08m on a formula simplification. DAG size of input: 5060 DAG size of output: 4351 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 12:27:29,932 WARN L222 SmtUtils]: Spent 11.58s on a formula simplification. DAG size of input: 17 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 12:29:15,751 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:29:15,752 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:29:16,648 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 12:29:16,650 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:29:16,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 12:29:16,784 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 [2023-01-28 12:29:16,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:29:16,850 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 1069ms.. [2023-01-28 12:29:16,852 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:29:16,852 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:29:16,852 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1] [2023-01-28 12:29:16,855 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:29:16,855 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:29:16,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:29:16 BasicIcfg [2023-01-28 12:29:16,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:29:16,857 INFO L158 Benchmark]: Toolchain (without parser) took 857659.81ms. Allocated memory was 327.2MB in the beginning and 570.4MB in the end (delta: 243.3MB). Free memory was 286.7MB in the beginning and 396.0MB in the end (delta: -109.3MB). Peak memory consumption was 345.2MB. Max. memory is 16.0GB. [2023-01-28 12:29:16,857 INFO L158 Benchmark]: CDTParser took 0.13ms. 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 12:29:16,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.62ms. Allocated memory is still 327.2MB. Free memory was 286.3MB in the beginning and 274.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:29:16,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.19ms. Allocated memory is still 327.2MB. Free memory was 274.6MB in the beginning and 272.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:29:16,858 INFO L158 Benchmark]: Boogie Preprocessor took 24.06ms. Allocated memory is still 327.2MB. Free memory was 272.5MB in the beginning and 270.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:29:16,858 INFO L158 Benchmark]: RCFGBuilder took 531.97ms. Allocated memory is still 327.2MB. Free memory was 270.8MB in the beginning and 251.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 12:29:16,858 INFO L158 Benchmark]: TraceAbstraction took 856845.87ms. Allocated memory was 327.2MB in the beginning and 570.4MB in the end (delta: 243.3MB). Free memory was 250.8MB in the beginning and 396.0MB in the end (delta: -145.1MB). Peak memory consumption was 309.6MB. Max. memory is 16.0GB. [2023-01-28 12:29:16,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 211.62ms. Allocated memory is still 327.2MB. Free memory was 286.3MB in the beginning and 274.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.19ms. Allocated memory is still 327.2MB. Free memory was 274.6MB in the beginning and 272.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.06ms. Allocated memory is still 327.2MB. Free memory was 272.5MB in the beginning and 270.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 531.97ms. Allocated memory is still 327.2MB. Free memory was 270.8MB in the beginning and 251.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 856845.87ms. Allocated memory was 327.2MB in the beginning and 570.4MB in the end (delta: 243.3MB). Free memory was 250.8MB in the beginning and 396.0MB in the end (delta: -145.1MB). Peak memory consumption was 309.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1s, 198 PlacesBefore, 21 PlacesAfterwards, 212 TransitionsBefore, 17 TransitionsAfterwards, 5492 CoEnabledTransitionPairs, 7 FixpointIterations, 64 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 38 ConcurrentYvCompositions, 18 ChoiceCompositions, 254 TotalNumberOfCompositions, 5306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5274, independent: 5267, independent conditional: 0, independent unconditional: 5267, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3364, independent: 3360, independent conditional: 0, independent unconditional: 3360, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5274, independent: 1907, independent conditional: 0, independent unconditional: 1907, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 3364, unknown conditional: 0, unknown unconditional: 3364] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 1069ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 1069ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 1069ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 313 locations, 3 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: 856.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 42.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 451 SdHoareTripleChecker+Valid, 13.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 451 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2200 IncrementalHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 33 mSDtfsCounter, 2200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1691occurred in iteration=9, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 187 ConstructedInterpolants, 3 QuantifiedInterpolants, 4536 SizeOfPredicates, 67 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 9/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown