/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/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:37:27,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:37:27,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:37:28,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:37:28,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:37:28,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:37:28,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:37:28,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:37:28,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:37:28,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:37:28,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:37:28,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:37:28,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:37:28,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:37:28,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:37:28,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:37:28,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:37:28,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:37:28,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:37:28,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:37:28,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:37:28,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:37:28,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:37:28,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:37:28,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:37:28,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:37:28,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:37:28,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:37:28,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:37:28,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:37:28,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:37:28,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:37:28,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:37:28,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:37:28,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:37:28,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:37:28,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:37:28,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:37:28,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:37:28,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:37:28,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:37:28,077 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 09:37:28,102 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:37:28,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:37:28,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:37:28,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:37:28,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:37:28,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:37:28,104 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:37:28,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:37:28,105 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:37:28,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:37:28,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:37:28,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:37:28,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:37:28,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:37:28,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:37:28,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:37:28,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:37:28,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:37:28,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:37:28,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:37:28,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:37:28,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:37:28,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:37:28,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:37:28,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:37:28,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:37:28,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:37:28,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:37:28,321 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:37:28,322 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:37:28,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2023-01-28 09:37:29,401 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:37:29,571 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:37:29,571 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2023-01-28 09:37:29,576 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac84a6c0/48f48ebecb6f4a4e8b80108dcfb42c43/FLAGc3990e743 [2023-01-28 09:37:29,588 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac84a6c0/48f48ebecb6f4a4e8b80108dcfb42c43 [2023-01-28 09:37:29,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:37:29,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:37:29,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:37:29,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:37:29,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:37:29,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42133c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29, skipping insertion in model container [2023-01-28 09:37:29,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:37:29,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:37:29,821 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/parallel-bakery-2.wvr.c[3512,3525] [2023-01-28 09:37:29,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:37:29,832 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:37:29,852 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/parallel-bakery-2.wvr.c[3512,3525] [2023-01-28 09:37:29,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:37:29,860 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:37:29,860 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:37:29,865 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:37:29,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29 WrapperNode [2023-01-28 09:37:29,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:37:29,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:37:29,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:37:29,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:37:29,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,896 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 155 [2023-01-28 09:37:29,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:37:29,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:37:29,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:37:29,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:37:29,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:37:29,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:37:29,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:37:29,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:37:29,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (1/1) ... [2023-01-28 09:37:29,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:37:29,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:37:29,956 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 09:37:29,971 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 09:37:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:37:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:37:29,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:37:29,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:37:29,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:37:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:37:29,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:37:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:37:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:37:30,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:37:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:37:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:37:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:37:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:37:30,002 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 09:37:30,106 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:37:30,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:37:30,338 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:37:30,428 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:37:30,428 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 09:37:30,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:37:30 BoogieIcfgContainer [2023-01-28 09:37:30,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:37:30,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:37:30,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:37:30,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:37:30,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:37:29" (1/3) ... [2023-01-28 09:37:30,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66454183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:37:30, skipping insertion in model container [2023-01-28 09:37:30,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:37:29" (2/3) ... [2023-01-28 09:37:30,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66454183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:37:30, skipping insertion in model container [2023-01-28 09:37:30,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:37:30" (3/3) ... [2023-01-28 09:37:30,438 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2023-01-28 09:37:30,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:37:30,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:37:30,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:37:30,526 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:37:30,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2023-01-28 09:37:30,635 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2023-01-28 09:37:30,635 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:37:30,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-28 09:37:30,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2023-01-28 09:37:30,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 208 flow [2023-01-28 09:37:30,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:37:30,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 208 flow [2023-01-28 09:37:30,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 208 flow [2023-01-28 09:37:30,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 208 flow [2023-01-28 09:37:30,681 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2023-01-28 09:37:30,681 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:37:30,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 2/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-28 09:37:30,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-01-28 09:37:33,179 INFO L134 LiptonReduction]: Checked pairs total: 4021 [2023-01-28 09:37:33,179 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-01-28 09:37:33,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:37:33,196 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;@74e34c28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:37:33,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:37:33,203 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2023-01-28 09:37:33,203 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:37:33,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:33,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:33,204 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 09:37:33,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash -64474640, now seen corresponding path program 1 times [2023-01-28 09:37:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895414632] [2023-01-28 09:37:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:33,918 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 09:37:33,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:33,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895414632] [2023-01-28 09:37:33,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895414632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:33,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:33,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:37:33,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10568617] [2023-01-28 09:37:33,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:33,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:37:33,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:37:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:37:33,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 186 [2023-01-28 09:37:33,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 09:37:33,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:33,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 186 [2023-01-28 09:37:33,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:34,236 INFO L130 PetriNetUnfolder]: 172/364 cut-off events. [2023-01-28 09:37:34,236 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-01-28 09:37:34,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 364 events. 172/364 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1509 event pairs, 57 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 616. Up to 98 conditions per place. [2023-01-28 09:37:34,240 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 44 selfloop transitions, 7 changer transitions 17/74 dead transitions. [2023-01-28 09:37:34,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 74 transitions, 323 flow [2023-01-28 09:37:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:37:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:37:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 733 transitions. [2023-01-28 09:37:34,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49260752688172044 [2023-01-28 09:37:34,255 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 733 transitions. [2023-01-28 09:37:34,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 733 transitions. [2023-01-28 09:37:34,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:34,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 733 transitions. [2023-01-28 09:37:34,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.625) internal successors, (733), 8 states have internal predecessors, (733), 0 states have call successors, (0), 0 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 09:37:34,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 09:37:34,270 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 09:37:34,272 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 8 states and 733 transitions. [2023-01-28 09:37:34,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 74 transitions, 323 flow [2023-01-28 09:37:34,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 74 transitions, 297 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:37:34,277 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2023-01-28 09:37:34,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-01-28 09:37:34,281 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-01-28 09:37:34,281 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2023-01-28 09:37:34,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 09:37:34,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:34,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:34,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:37:34,282 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 09:37:34,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -449195868, now seen corresponding path program 2 times [2023-01-28 09:37:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547970748] [2023-01-28 09:37:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:37:34,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:34,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547970748] [2023-01-28 09:37:34,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547970748] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:34,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:34,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:37:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91211670] [2023-01-28 09:37:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:34,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:37:34,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:37:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:37:34,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2023-01-28 09:37:34,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 09:37:34,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:34,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2023-01-28 09:37:34,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:34,715 INFO L130 PetriNetUnfolder]: 183/462 cut-off events. [2023-01-28 09:37:34,715 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-28 09:37:34,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 462 events. 183/462 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2382 event pairs, 49 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 930. Up to 210 conditions per place. [2023-01-28 09:37:34,721 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 27 selfloop transitions, 5 changer transitions 18/63 dead transitions. [2023-01-28 09:37:34,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 260 flow [2023-01-28 09:37:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:37:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:37:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2023-01-28 09:37:34,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2023-01-28 09:37:34,723 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2023-01-28 09:37:34,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2023-01-28 09:37:34,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:34,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2023-01-28 09:37:34,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:34,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 09:37:34,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 09:37:34,729 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 6 states and 567 transitions. [2023-01-28 09:37:34,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 260 flow [2023-01-28 09:37:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 258 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:37:34,734 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 131 flow [2023-01-28 09:37:34,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-28 09:37:34,734 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-01-28 09:37:34,735 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 131 flow [2023-01-28 09:37:34,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 09:37:34,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:34,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:34,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:37:34,736 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 09:37:34,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2114433036, now seen corresponding path program 3 times [2023-01-28 09:37:34,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:34,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537330584] [2023-01-28 09:37:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:34,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:34,843 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 09:37:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537330584] [2023-01-28 09:37:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537330584] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:34,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:37:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161989259] [2023-01-28 09:37:34,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:37:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:37:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:37:34,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 186 [2023-01-28 09:37:34,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:34,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:34,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 186 [2023-01-28 09:37:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:34,899 INFO L130 PetriNetUnfolder]: 132/348 cut-off events. [2023-01-28 09:37:34,900 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-01-28 09:37:34,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 348 events. 132/348 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1662 event pairs, 94 based on Foata normal form. 8/340 useless extension candidates. Maximal degree in co-relation 774. Up to 244 conditions per place. [2023-01-28 09:37:34,901 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 22 selfloop transitions, 2 changer transitions 2/39 dead transitions. [2023-01-28 09:37:34,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 197 flow [2023-01-28 09:37:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:37:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:37:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-01-28 09:37:34,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525089605734767 [2023-01-28 09:37:34,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-01-28 09:37:34,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-01-28 09:37:34,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:34,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-01-28 09:37:34,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:34,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 09:37:34,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 09:37:34,906 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 131 flow. Second operand 3 states and 293 transitions. [2023-01-28 09:37:34,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 197 flow [2023-01-28 09:37:34,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:37:34,909 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 134 flow [2023-01-28 09:37:34,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-01-28 09:37:34,909 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-01-28 09:37:34,910 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 134 flow [2023-01-28 09:37:34,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:34,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:34,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:34,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:37:34,910 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 09:37:34,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash 779493050, now seen corresponding path program 4 times [2023-01-28 09:37:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:34,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959941980] [2023-01-28 09:37:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:35,139 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 09:37:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959941980] [2023-01-28 09:37:35,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959941980] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:35,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:35,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:37:35,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193338169] [2023-01-28 09:37:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:35,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:37:35,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:37:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:37:35,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2023-01-28 09:37:35,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 09:37:35,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:35,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2023-01-28 09:37:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:35,209 INFO L130 PetriNetUnfolder]: 108/314 cut-off events. [2023-01-28 09:37:35,209 INFO L131 PetriNetUnfolder]: For 175/176 co-relation queries the response was YES. [2023-01-28 09:37:35,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 314 events. 108/314 cut-off events. For 175/176 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1393 event pairs, 45 based on Foata normal form. 7/313 useless extension candidates. Maximal degree in co-relation 399. Up to 168 conditions per place. [2023-01-28 09:37:35,211 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 2 changer transitions 12/46 dead transitions. [2023-01-28 09:37:35,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 227 flow [2023-01-28 09:37:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:37:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:37:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2023-01-28 09:37:35,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989247311827957 [2023-01-28 09:37:35,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2023-01-28 09:37:35,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2023-01-28 09:37:35,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:35,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2023-01-28 09:37:35,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 09:37:35,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 09:37:35,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 09:37:35,217 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 134 flow. Second operand 5 states and 464 transitions. [2023-01-28 09:37:35,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 227 flow [2023-01-28 09:37:35,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:37:35,219 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 120 flow [2023-01-28 09:37:35,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-01-28 09:37:35,220 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-01-28 09:37:35,220 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 120 flow [2023-01-28 09:37:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 09:37:35,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:35,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:37:35,221 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 09:37:35,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 923702230, now seen corresponding path program 5 times [2023-01-28 09:37:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:35,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840760977] [2023-01-28 09:37:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:35,310 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 09:37:35,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:35,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840760977] [2023-01-28 09:37:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840760977] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:35,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:37:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381328649] [2023-01-28 09:37:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:37:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:37:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:37:35,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 186 [2023-01-28 09:37:35,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:35,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:35,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 186 [2023-01-28 09:37:35,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:35,354 INFO L130 PetriNetUnfolder]: 86/238 cut-off events. [2023-01-28 09:37:35,354 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2023-01-28 09:37:35,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 238 events. 86/238 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 918 event pairs, 61 based on Foata normal form. 4/231 useless extension candidates. Maximal degree in co-relation 414. Up to 149 conditions per place. [2023-01-28 09:37:35,356 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 23 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-01-28 09:37:35,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 191 flow [2023-01-28 09:37:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:37:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:37:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-28 09:37:35,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304659498207885 [2023-01-28 09:37:35,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-28 09:37:35,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-28 09:37:35,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:35,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-28 09:37:35,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 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 09:37:35,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 09:37:35,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 09:37:35,360 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 120 flow. Second operand 3 states and 296 transitions. [2023-01-28 09:37:35,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 191 flow [2023-01-28 09:37:35,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 172 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-01-28 09:37:35,361 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 114 flow [2023-01-28 09:37:35,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-01-28 09:37:35,362 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-01-28 09:37:35,362 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 114 flow [2023-01-28 09:37:35,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:37:35,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:35,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:35,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:37:35,363 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 09:37:35,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2048255894, now seen corresponding path program 6 times [2023-01-28 09:37:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:35,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307117830] [2023-01-28 09:37:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:35,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:35,508 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 09:37:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307117830] [2023-01-28 09:37:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307117830] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:35,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:37:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039086096] [2023-01-28 09:37:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:37:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:37:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:37:35,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 186 [2023-01-28 09:37:35,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 09:37:35,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:35,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 186 [2023-01-28 09:37:35,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:35,663 INFO L130 PetriNetUnfolder]: 126/275 cut-off events. [2023-01-28 09:37:35,663 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-01-28 09:37:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 275 events. 126/275 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1008 event pairs, 33 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 487. Up to 72 conditions per place. [2023-01-28 09:37:35,665 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 30 selfloop transitions, 6 changer transitions 21/63 dead transitions. [2023-01-28 09:37:35,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 319 flow [2023-01-28 09:37:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:37:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:37:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 721 transitions. [2023-01-28 09:37:35,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845430107526882 [2023-01-28 09:37:35,667 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 721 transitions. [2023-01-28 09:37:35,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 721 transitions. [2023-01-28 09:37:35,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:35,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 721 transitions. [2023-01-28 09:37:35,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.125) internal successors, (721), 8 states have internal predecessors, (721), 0 states have call successors, (0), 0 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 09:37:35,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 09:37:35,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 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 09:37:35,672 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 114 flow. Second operand 8 states and 721 transitions. [2023-01-28 09:37:35,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 319 flow [2023-01-28 09:37:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 09:37:35,675 INFO L231 Difference]: Finished difference. Result has 49 places, 29 transitions, 111 flow [2023-01-28 09:37:35,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=111, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2023-01-28 09:37:35,676 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-01-28 09:37:35,677 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 111 flow [2023-01-28 09:37:35,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 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 09:37:35,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:35,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:37:35,677 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 09:37:35,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 745665856, now seen corresponding path program 7 times [2023-01-28 09:37:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:35,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448116914] [2023-01-28 09:37:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:35,870 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 09:37:35,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448116914] [2023-01-28 09:37:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448116914] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:35,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:35,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:37:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869142835] [2023-01-28 09:37:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:35,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:37:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:37:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:37:35,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2023-01-28 09:37:35,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 09:37:35,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:35,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2023-01-28 09:37:35,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:35,943 INFO L130 PetriNetUnfolder]: 59/177 cut-off events. [2023-01-28 09:37:35,943 INFO L131 PetriNetUnfolder]: For 56/58 co-relation queries the response was YES. [2023-01-28 09:37:35,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 177 events. 59/177 cut-off events. For 56/58 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 613 event pairs, 26 based on Foata normal form. 8/183 useless extension candidates. Maximal degree in co-relation 428. Up to 65 conditions per place. [2023-01-28 09:37:35,944 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 20 selfloop transitions, 4 changer transitions 9/43 dead transitions. [2023-01-28 09:37:35,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 220 flow [2023-01-28 09:37:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:37:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:37:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2023-01-28 09:37:35,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49372759856630827 [2023-01-28 09:37:35,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 551 transitions. [2023-01-28 09:37:35,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 551 transitions. [2023-01-28 09:37:35,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:35,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 551 transitions. [2023-01-28 09:37:35,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 09:37:35,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 09:37:35,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 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 09:37:35,950 INFO L175 Difference]: Start difference. First operand has 49 places, 29 transitions, 111 flow. Second operand 6 states and 551 transitions. [2023-01-28 09:37:35,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 220 flow [2023-01-28 09:37:35,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 189 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-01-28 09:37:35,952 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 102 flow [2023-01-28 09:37:35,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-01-28 09:37:35,953 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-01-28 09:37:35,953 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 102 flow [2023-01-28 09:37:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 09:37:35,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:37:35,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:37:35,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:37:35,953 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 09:37:35,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:37:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1161390480, now seen corresponding path program 8 times [2023-01-28 09:37:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:37:35,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841716458] [2023-01-28 09:37:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:37:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:37:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:37:36,218 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 09:37:36,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:37:36,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841716458] [2023-01-28 09:37:36,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841716458] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:37:36,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:37:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:37:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855589208] [2023-01-28 09:37:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:37:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:37:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:37:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:37:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:37:36,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2023-01-28 09:37:36,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 09:37:36,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:37:36,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2023-01-28 09:37:36,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:37:36,270 INFO L130 PetriNetUnfolder]: 21/71 cut-off events. [2023-01-28 09:37:36,270 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-28 09:37:36,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 71 events. 21/71 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 11 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 167. Up to 22 conditions per place. [2023-01-28 09:37:36,271 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-01-28 09:37:36,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 108 flow [2023-01-28 09:37:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:37:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:37:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2023-01-28 09:37:36,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806451612903226 [2023-01-28 09:37:36,272 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2023-01-28 09:37:36,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2023-01-28 09:37:36,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:37:36,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2023-01-28 09:37:36,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 09:37:36,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 09:37:36,275 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 09:37:36,275 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 102 flow. Second operand 5 states and 447 transitions. [2023-01-28 09:37:36,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 108 flow [2023-01-28 09:37:36,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 96 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-28 09:37:36,276 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-01-28 09:37:36,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-01-28 09:37:36,277 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-01-28 09:37:36,277 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-01-28 09:37:36,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 09:37:36,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:37:36,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:37:36,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:37:36,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:37:36,280 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2023-01-28 09:37:36,282 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:37:36,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:37:36,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:37:36 BasicIcfg [2023-01-28 09:37:36,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:37:36,286 INFO L158 Benchmark]: Toolchain (without parser) took 6694.02ms. Allocated memory was 337.6MB in the beginning and 406.8MB in the end (delta: 69.2MB). Free memory was 297.6MB in the beginning and 373.6MB in the end (delta: -76.0MB). Peak memory consumption was 224.5MB. Max. memory is 16.0GB. [2023-01-28 09:37:36,286 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:37:36,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.40ms. Allocated memory is still 337.6MB. Free memory was 297.2MB in the beginning and 285.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:37:36,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.87ms. Allocated memory is still 337.6MB. Free memory was 285.9MB in the beginning and 283.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:37:36,287 INFO L158 Benchmark]: Boogie Preprocessor took 31.45ms. Allocated memory is still 337.6MB. Free memory was 283.9MB in the beginning and 282.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:37:36,287 INFO L158 Benchmark]: RCFGBuilder took 501.44ms. Allocated memory is still 337.6MB. Free memory was 282.5MB in the beginning and 264.1MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 09:37:36,287 INFO L158 Benchmark]: TraceAbstraction took 5852.38ms. Allocated memory was 337.6MB in the beginning and 406.8MB in the end (delta: 69.2MB). Free memory was 263.3MB in the beginning and 373.6MB in the end (delta: -110.2MB). Peak memory consumption was 188.8MB. Max. memory is 16.0GB. [2023-01-28 09:37:36,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 273.40ms. Allocated memory is still 337.6MB. Free memory was 297.2MB in the beginning and 285.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.87ms. Allocated memory is still 337.6MB. Free memory was 285.9MB in the beginning and 283.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.45ms. Allocated memory is still 337.6MB. Free memory was 283.9MB in the beginning and 282.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 501.44ms. Allocated memory is still 337.6MB. Free memory was 282.5MB in the beginning and 264.1MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5852.38ms. Allocated memory was 337.6MB in the beginning and 406.8MB in the end (delta: 69.2MB). Free memory was 263.3MB in the beginning and 373.6MB in the end (delta: -110.2MB). Peak memory consumption was 188.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 103 PlacesBefore, 34 PlacesAfterwards, 98 TransitionsBefore, 27 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 4021 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 1933, independent conditional: 0, independent unconditional: 1933, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 286, independent: 270, independent conditional: 0, independent unconditional: 270, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2201, independent: 1663, independent conditional: 0, independent unconditional: 1663, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 286, unknown conditional: 0, unknown unconditional: 286] , Statistics on independence cache: Total cache size (in pairs): 109, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 133 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: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 855 IncrementalHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 9 mSDtfsCounter, 855 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 1090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:37:36,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...