/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:57:37,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:57:37,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:57:38,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 05:57:38,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:57:38,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:57:38,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:57:38,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:57:38,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:57:38,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:57:38,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:57:38,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:57:38,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:57:38,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:57:38,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:57:38,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:57:38,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:57:38,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:57:38,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:57:38,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:57:38,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:57:38,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:57:38,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:57:38,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:57:38,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:57:38,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:57:38,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:57:38,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:57:38,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:57:38,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:57:38,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:57:38,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:57:38,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:57:38,063 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 05:57:38,084 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:57:38,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:57:38,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:57:38,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:57:38,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:57:38,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:57:38,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:57:38,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:57:38,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:57:38,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:57:38,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:57:38,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:57:38,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:57:38,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:57:38,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:57:38,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:57:38,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:57:38,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:57:38,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:57:38,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:57:38,268 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:57:38,271 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:57:38,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2023-01-28 05:57:39,237 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:57:39,461 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:57:39,461 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2023-01-28 05:57:39,470 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8828e384/96c4deda8a8a47dc93f75971b603624d/FLAG52b8c7976 [2023-01-28 05:57:39,854 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8828e384/96c4deda8a8a47dc93f75971b603624d [2023-01-28 05:57:39,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:57:39,858 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:57:39,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:57:39,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:57:39,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:57:39,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:57:39" (1/1) ... [2023-01-28 05:57:39,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3046b7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:39, skipping insertion in model container [2023-01-28 05:57:39,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:57:39" (1/1) ... [2023-01-28 05:57:39,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:57:39,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:57:40,121 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] [2023-01-28 05:57:40,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] [2023-01-28 05:57:40,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:57:40,151 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:57:40,179 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] [2023-01-28 05:57:40,182 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] [2023-01-28 05:57:40,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:57:40,216 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:57:40,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40 WrapperNode [2023-01-28 05:57:40,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:57:40,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:57:40,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:57:40,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:57:40,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,267 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2023-01-28 05:57:40,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:57:40,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:57:40,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:57:40,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:57:40,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:57:40,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:57:40,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:57:40,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:57:40,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (1/1) ... [2023-01-28 05:57:40,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:57:40,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:40,310 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 05:57:40,316 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 05:57:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 05:57:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 05:57:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:57:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 05:57:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:57:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:57:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:57:40,340 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 05:57:40,436 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:57:40,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:57:40,626 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:57:40,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:57:40,632 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 05:57:40,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:57:40 BoogieIcfgContainer [2023-01-28 05:57:40,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:57:40,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:57:40,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:57:40,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:57:40,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:57:39" (1/3) ... [2023-01-28 05:57:40,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546fc972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:57:40, skipping insertion in model container [2023-01-28 05:57:40,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:40" (2/3) ... [2023-01-28 05:57:40,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546fc972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:57:40, skipping insertion in model container [2023-01-28 05:57:40,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:57:40" (3/3) ... [2023-01-28 05:57:40,639 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-01-28 05:57:40,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:57:40,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 05:57:40,650 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:57:40,712 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 05:57:40,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 140 transitions, 296 flow [2023-01-28 05:57:40,775 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2023-01-28 05:57:40,775 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:57:40,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 10/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-01-28 05:57:40,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 140 transitions, 296 flow [2023-01-28 05:57:40,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 129 transitions, 267 flow [2023-01-28 05:57:40,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:57:40,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 129 transitions, 267 flow [2023-01-28 05:57:40,793 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 129 transitions, 267 flow [2023-01-28 05:57:40,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 129 transitions, 267 flow [2023-01-28 05:57:40,829 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-28 05:57:40,829 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 05:57:40,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 10/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 235 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-01-28 05:57:40,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-01-28 05:57:44,522 INFO L134 LiptonReduction]: Checked pairs total: 8363 [2023-01-28 05:57:44,523 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-01-28 05:57:44,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:57:44,537 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;@68f72fd1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:57:44,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 05:57:44,541 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-01-28 05:57:44,541 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 05:57:44,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:44,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:44,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:44,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1708763483, now seen corresponding path program 1 times [2023-01-28 05:57:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:44,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807978661] [2023-01-28 05:57:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:44,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:44,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 05:57:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698255911] [2023-01-28 05:57:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:44,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:44,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:44,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:44,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:57:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:44,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:57:44,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:44,834 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 05:57:44,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:57:44,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:44,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807978661] [2023-01-28 05:57:44,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 05:57:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698255911] [2023-01-28 05:57:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698255911] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:57:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438978624] [2023-01-28 05:57:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:44,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:44,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:44,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 251 [2023-01-28 05:57:44,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 05:57:44,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:44,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 251 [2023-01-28 05:57:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:45,002 INFO L130 PetriNetUnfolder]: 417/682 cut-off events. [2023-01-28 05:57:45,003 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-01-28 05:57:45,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 682 events. 417/682 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2735 event pairs, 297 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 1238. Up to 626 conditions per place. [2023-01-28 05:57:45,010 INFO L137 encePairwiseOnDemand]: 249/251 looper letters, 28 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-01-28 05:57:45,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 133 flow [2023-01-28 05:57:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-01-28 05:57:45,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059760956175299 [2023-01-28 05:57:45,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-01-28 05:57:45,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-01-28 05:57:45,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:45,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-01-28 05:57:45,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 05:57:45,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:45,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:45,046 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 77 flow. Second operand 3 states and 381 transitions. [2023-01-28 05:57:45,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 133 flow [2023-01-28 05:57:45,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 05:57:45,049 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 72 flow [2023-01-28 05:57:45,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-01-28 05:57:45,054 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-01-28 05:57:45,055 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 72 flow [2023-01-28 05:57:45,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 05:57:45,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:45,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:45,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 05:57:45,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-01-28 05:57:45,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:45,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 306299020, now seen corresponding path program 1 times [2023-01-28 05:57:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:45,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458309391] [2023-01-28 05:57:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:45,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:45,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458309391] [2023-01-28 05:57:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458309391] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:45,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:45,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:57:45,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036632621] [2023-01-28 05:57:45,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:45,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:45,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:45,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 251 [2023-01-28 05:57:45,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 05:57:45,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:45,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 251 [2023-01-28 05:57:45,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:45,553 INFO L130 PetriNetUnfolder]: 592/999 cut-off events. [2023-01-28 05:57:45,553 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 05:57:45,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 999 events. 592/999 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3921 event pairs, 228 based on Foata normal form. 0/782 useless extension candidates. Maximal degree in co-relation 1995. Up to 585 conditions per place. [2023-01-28 05:57:45,574 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 46 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2023-01-28 05:57:45,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 54 transitions, 219 flow [2023-01-28 05:57:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-01-28 05:57:45,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630810092961488 [2023-01-28 05:57:45,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-01-28 05:57:45,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-01-28 05:57:45,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:45,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-01-28 05:57:45,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:45,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:45,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:45,582 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 72 flow. Second operand 3 states and 424 transitions. [2023-01-28 05:57:45,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 54 transitions, 219 flow [2023-01-28 05:57:45,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 54 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:45,584 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 84 flow [2023-01-28 05:57:45,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-01-28 05:57:45,584 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-01-28 05:57:45,585 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 84 flow [2023-01-28 05:57:45,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 05:57:45,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:45,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:45,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:57:45,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:45,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 501019712, now seen corresponding path program 1 times [2023-01-28 05:57:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:45,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150912281] [2023-01-28 05:57:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:45,698 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 05:57:45,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:45,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150912281] [2023-01-28 05:57:45,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150912281] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:45,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:45,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:57:45,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530787911] [2023-01-28 05:57:45,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:45,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:45,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:45,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 251 [2023-01-28 05:57:45,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 05:57:45,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:45,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 251 [2023-01-28 05:57:45,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:45,789 INFO L130 PetriNetUnfolder]: 342/599 cut-off events. [2023-01-28 05:57:45,789 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-28 05:57:45,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 599 events. 342/599 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2266 event pairs, 64 based on Foata normal form. 26/569 useless extension candidates. Maximal degree in co-relation 1253. Up to 416 conditions per place. [2023-01-28 05:57:45,792 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 36 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-01-28 05:57:45,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 187 flow [2023-01-28 05:57:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-28 05:57:45,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179282868525896 [2023-01-28 05:57:45,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-28 05:57:45,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-28 05:57:45,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:45,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-28 05:57:45,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:45,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:45,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:45,797 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 84 flow. Second operand 3 states and 390 transitions. [2023-01-28 05:57:45,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 187 flow [2023-01-28 05:57:45,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:45,799 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 89 flow [2023-01-28 05:57:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-01-28 05:57:45,800 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-01-28 05:57:45,800 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 89 flow [2023-01-28 05:57:45,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 05:57:45,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:45,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:45,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:57:45,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:45,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash 944092763, now seen corresponding path program 1 times [2023-01-28 05:57:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:45,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157322981] [2023-01-28 05:57:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:46,009 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 05:57:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157322981] [2023-01-28 05:57:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157322981] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:57:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42431526] [2023-01-28 05:57:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:46,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 251 [2023-01-28 05:57:46,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:46,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:46,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 251 [2023-01-28 05:57:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:46,094 INFO L130 PetriNetUnfolder]: 344/643 cut-off events. [2023-01-28 05:57:46,097 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-01-28 05:57:46,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 643 events. 344/643 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2376 event pairs, 129 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 1374. Up to 415 conditions per place. [2023-01-28 05:57:46,101 INFO L137 encePairwiseOnDemand]: 248/251 looper letters, 39 selfloop transitions, 2 changer transitions 3/49 dead transitions. [2023-01-28 05:57:46,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 216 flow [2023-01-28 05:57:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-01-28 05:57:46,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258964143426295 [2023-01-28 05:57:46,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-01-28 05:57:46,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-01-28 05:57:46,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:46,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-01-28 05:57:46,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 05:57:46,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:46,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 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 05:57:46,105 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 89 flow. Second operand 3 states and 396 transitions. [2023-01-28 05:57:46,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 216 flow [2023-01-28 05:57:46,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:46,108 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 97 flow [2023-01-28 05:57:46,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-01-28 05:57:46,109 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-01-28 05:57:46,109 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 97 flow [2023-01-28 05:57:46,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:46,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:46,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:57:46,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:46,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1856592171, now seen corresponding path program 1 times [2023-01-28 05:57:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449468546] [2023-01-28 05:57:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:46,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:46,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 05:57:46,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676049393] [2023-01-28 05:57:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:46,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:46,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:46,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:57:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:46,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 05:57:46,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:46,520 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 05:57:46,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:57:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449468546] [2023-01-28 05:57:46,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 05:57:46,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676049393] [2023-01-28 05:57:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676049393] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:46,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:46,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:57:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978400138] [2023-01-28 05:57:46,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:46,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:57:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:57:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:57:46,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 251 [2023-01-28 05:57:46,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:46,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:46,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 251 [2023-01-28 05:57:46,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:46,647 INFO L130 PetriNetUnfolder]: 454/847 cut-off events. [2023-01-28 05:57:46,648 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-01-28 05:57:46,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 847 events. 454/847 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3324 event pairs, 115 based on Foata normal form. 8/818 useless extension candidates. Maximal degree in co-relation 1801. Up to 408 conditions per place. [2023-01-28 05:57:46,651 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 56 selfloop transitions, 4 changer transitions 3/68 dead transitions. [2023-01-28 05:57:46,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 305 flow [2023-01-28 05:57:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:57:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:57:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2023-01-28 05:57:46,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149402390438247 [2023-01-28 05:57:46,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2023-01-28 05:57:46,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2023-01-28 05:57:46,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:46,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2023-01-28 05:57:46,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 05:57:46,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 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 05:57:46,655 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 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 05:57:46,656 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 97 flow. Second operand 4 states and 517 transitions. [2023-01-28 05:57:46,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 305 flow [2023-01-28 05:57:46,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:46,658 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 120 flow [2023-01-28 05:57:46,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-01-28 05:57:46,660 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-01-28 05:57:46,660 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 120 flow [2023-01-28 05:57:46,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:46,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:46,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:46,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:57:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:46,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:46,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1719788797, now seen corresponding path program 1 times [2023-01-28 05:57:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:46,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765267360] [2023-01-28 05:57:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:46,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:46,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 05:57:46,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318720835] [2023-01-28 05:57:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:46,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:46,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:46,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:46,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:57:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:47,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 05:57:47,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:47,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:57:47,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-01-28 05:57:47,092 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 05:57:47,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-28 05:57:47,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-01-28 05:57:47,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2023-01-28 05:57:47,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2023-01-28 05:57:47,490 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 05:57:47,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:57:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765267360] [2023-01-28 05:57:47,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 05:57:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318720835] [2023-01-28 05:57:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318720835] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:47,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:47,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 05:57:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350780005] [2023-01-28 05:57:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:47,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 05:57:47,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 05:57:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:57:47,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 251 [2023-01-28 05:57:47,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 120 flow. Second operand has 9 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 05:57:47,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:47,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 251 [2023-01-28 05:57:47,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:47,967 INFO L130 PetriNetUnfolder]: 1041/1922 cut-off events. [2023-01-28 05:57:47,968 INFO L131 PetriNetUnfolder]: For 254/262 co-relation queries the response was YES. [2023-01-28 05:57:47,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 1922 events. 1041/1922 cut-off events. For 254/262 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9485 event pairs, 266 based on Foata normal form. 34/1876 useless extension candidates. Maximal degree in co-relation 4157. Up to 635 conditions per place. [2023-01-28 05:57:47,978 INFO L137 encePairwiseOnDemand]: 239/251 looper letters, 106 selfloop transitions, 24 changer transitions 3/138 dead transitions. [2023-01-28 05:57:47,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 138 transitions, 663 flow [2023-01-28 05:57:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 05:57:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 05:57:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1013 transitions. [2023-01-28 05:57:47,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40358565737051794 [2023-01-28 05:57:47,981 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1013 transitions. [2023-01-28 05:57:47,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1013 transitions. [2023-01-28 05:57:47,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:47,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1013 transitions. [2023-01-28 05:57:47,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.3) internal successors, (1013), 10 states have internal predecessors, (1013), 0 states have call successors, (0), 0 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 05:57:47,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 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 05:57:47,988 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 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 05:57:47,988 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 120 flow. Second operand 10 states and 1013 transitions. [2023-01-28 05:57:47,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 138 transitions, 663 flow [2023-01-28 05:57:47,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 138 transitions, 650 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 05:57:47,991 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 290 flow [2023-01-28 05:57:47,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-01-28 05:57:47,991 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-01-28 05:57:47,992 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 290 flow [2023-01-28 05:57:47,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 05:57:47,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:47,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:48,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:57:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:48,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:48,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash -304123085, now seen corresponding path program 2 times [2023-01-28 05:57:48,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:48,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006506925] [2023-01-28 05:57:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:48,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 05:57:48,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784883544] [2023-01-28 05:57:48,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:57:48,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:48,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:48,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:48,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:57:48,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 05:57:48,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:57:48,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 05:57:48,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:48,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:57:48,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-01-28 05:57:48,594 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 05:57:48,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-28 05:57:48,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-01-28 05:57:48,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2023-01-28 05:57:48,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2023-01-28 05:57:48,883 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 05:57:48,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:57:48,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006506925] [2023-01-28 05:57:48,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 05:57:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784883544] [2023-01-28 05:57:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784883544] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 05:57:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134234839] [2023-01-28 05:57:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 05:57:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:48,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 05:57:48,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:57:48,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 251 [2023-01-28 05:57:48,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 290 flow. Second operand has 9 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 05:57:48,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:48,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 251 [2023-01-28 05:57:48,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:49,412 INFO L130 PetriNetUnfolder]: 1710/3167 cut-off events. [2023-01-28 05:57:49,412 INFO L131 PetriNetUnfolder]: For 3910/3941 co-relation queries the response was YES. [2023-01-28 05:57:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9412 conditions, 3167 events. 1710/3167 cut-off events. For 3910/3941 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 17481 event pairs, 356 based on Foata normal form. 41/3182 useless extension candidates. Maximal degree in co-relation 9393. Up to 769 conditions per place. [2023-01-28 05:57:49,427 INFO L137 encePairwiseOnDemand]: 240/251 looper letters, 132 selfloop transitions, 44 changer transitions 3/184 dead transitions. [2023-01-28 05:57:49,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 184 transitions, 1174 flow [2023-01-28 05:57:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 05:57:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 05:57:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1214 transitions. [2023-01-28 05:57:49,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4030544488711819 [2023-01-28 05:57:49,430 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1214 transitions. [2023-01-28 05:57:49,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1214 transitions. [2023-01-28 05:57:49,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:49,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1214 transitions. [2023-01-28 05:57:49,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.16666666666667) internal successors, (1214), 12 states have internal predecessors, (1214), 0 states have call successors, (0), 0 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 05:57:49,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 251.0) internal successors, (3263), 13 states have internal predecessors, (3263), 0 states have call successors, (0), 0 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 05:57:49,436 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 251.0) internal successors, (3263), 13 states have internal predecessors, (3263), 0 states have call successors, (0), 0 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 05:57:49,436 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 290 flow. Second operand 12 states and 1214 transitions. [2023-01-28 05:57:49,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 184 transitions, 1174 flow [2023-01-28 05:57:49,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 184 transitions, 1172 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 05:57:49,445 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 616 flow [2023-01-28 05:57:49,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=616, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2023-01-28 05:57:49,445 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-01-28 05:57:49,445 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 616 flow [2023-01-28 05:57:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 05:57:49,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:49,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:49,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 05:57:49,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:49,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 05:57:49,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1084291500, now seen corresponding path program 1 times [2023-01-28 05:57:49,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:49,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563879450] [2023-01-28 05:57:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:49,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 05:57:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993964136] [2023-01-28 05:57:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:49,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:49,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:49,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:49,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:57:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 05:57:49,790 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 05:57:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 05:57:49,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 05:57:49,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 05:57:49,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 05:57:49,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-28 05:57:49,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 05:57:49,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 05:57:49,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-28 05:57:49,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 05:57:49,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 05:57:50,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:50,064 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:50,068 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:57:50,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:57:50,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:57:50 BasicIcfg [2023-01-28 05:57:50,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:57:50,113 INFO L158 Benchmark]: Toolchain (without parser) took 10255.23ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 475.6MB in the beginning and 340.4MB in the end (delta: 135.3MB). Peak memory consumption was 241.8MB. Max. memory is 16.0GB. [2023-01-28 05:57:50,113 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 310.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:57:50,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.07ms. Allocated memory is still 515.9MB. Free memory was 475.2MB in the beginning and 455.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 05:57:50,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.95ms. Allocated memory is still 515.9MB. Free memory was 455.1MB in the beginning and 453.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:57:50,113 INFO L158 Benchmark]: Boogie Preprocessor took 17.82ms. Allocated memory is still 515.9MB. Free memory was 453.0MB in the beginning and 450.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:57:50,114 INFO L158 Benchmark]: RCFGBuilder took 346.78ms. Allocated memory is still 515.9MB. Free memory was 450.9MB in the beginning and 433.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 05:57:50,114 INFO L158 Benchmark]: TraceAbstraction took 9476.90ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 432.8MB in the beginning and 340.4MB in the end (delta: 92.5MB). Peak memory consumption was 197.7MB. Max. memory is 16.0GB. [2023-01-28 05:57:50,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 310.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 358.07ms. Allocated memory is still 515.9MB. Free memory was 475.2MB in the beginning and 455.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.95ms. Allocated memory is still 515.9MB. Free memory was 455.1MB in the beginning and 453.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.82ms. Allocated memory is still 515.9MB. Free memory was 453.0MB in the beginning and 450.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 346.78ms. Allocated memory is still 515.9MB. Free memory was 450.9MB in the beginning and 433.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 9476.90ms. Allocated memory was 515.9MB in the beginning and 620.8MB in the end (delta: 104.9MB). Free memory was 432.8MB in the beginning and 340.4MB in the end (delta: 92.5MB). Peak memory consumption was 197.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 126 PlacesBefore, 35 PlacesAfterwards, 129 TransitionsBefore, 34 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 111 TotalNumberOfCompositions, 8363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4886, independent: 4600, independent conditional: 0, independent unconditional: 4600, dependent: 286, dependent conditional: 0, dependent unconditional: 286, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2137, independent: 2098, independent conditional: 0, independent unconditional: 2098, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4886, independent: 2502, independent conditional: 0, independent unconditional: 2502, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 2137, unknown conditional: 0, unknown unconditional: 2137] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 154, Positive conditional cache size: 0, Positive unconditional cache size: 154, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 199 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.3s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 425 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 959 IncrementalHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 1 mSDtfsCounter, 959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=7, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 18 QuantifiedInterpolants, 1018 SizeOfPredicates, 24 NumberOfNonLiveVariables, 840 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 05:57:50,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...