/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:12:40,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:12:40,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:12:40,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:12:40,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:12:40,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:12:40,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:12:40,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:12:40,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:12:40,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:12:40,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:12:40,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:12:40,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:12:40,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:12:40,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:12:40,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:12:40,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:12:40,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:12:40,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:12:40,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:12:40,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:12:40,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:12:40,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:12:40,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:12:40,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:12:40,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:12:40,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:12:40,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:12:40,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:12:40,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:12:40,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:12:40,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:12:40,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:12:40,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:12:40,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:12:40,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:12:40,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:12:40,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:12:40,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:12:40,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:12:40,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:12:40,295 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 06:12:40,317 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:12:40,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:12:40,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:12:40,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:12:40,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:12:40,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:12:40,319 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:12:40,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:12:40,319 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:12:40,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:12:40,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:12:40,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:12:40,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:12:40,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:12:40,321 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:12:40,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:12:40,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:12:40,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:12:40,528 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:12:40,529 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:12:40,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-01-28 06:12:41,494 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:12:41,729 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:12:41,730 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-01-28 06:12:41,751 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6514100/e6772eb8737f4f7f95f3419e03c72cb3/FLAG2da2610dc [2023-01-28 06:12:41,762 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6514100/e6772eb8737f4f7f95f3419e03c72cb3 [2023-01-28 06:12:41,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:12:41,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:12:41,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:12:41,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:12:41,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:12:41,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:12:41" (1/1) ... [2023-01-28 06:12:41,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e092b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:41, skipping insertion in model container [2023-01-28 06:12:41,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:12:41" (1/1) ... [2023-01-28 06:12:41,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:12:41,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:12:42,137 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/bigshot_s2.i[55203,55216] [2023-01-28 06:12:42,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:12:42,159 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:12:42,190 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/bigshot_s2.i[55203,55216] [2023-01-28 06:12:42,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:12:42,277 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:12:42,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42 WrapperNode [2023-01-28 06:12:42,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:12:42,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:12:42,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:12:42,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:12:42,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,333 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-28 06:12:42,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:12:42,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:12:42,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:12:42,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:12:42,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:12:42,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:12:42,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:12:42,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:12:42,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (1/1) ... [2023-01-28 06:12:42,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:12:42,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:42,412 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 06:12:42,415 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 06:12:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 06:12:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 06:12:42,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:12:42,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 06:12:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:12:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:12:42,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:12:42,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:12:42,471 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 06:12:42,571 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:12:42,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:12:42,693 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:12:42,698 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:12:42,698 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-28 06:12:42,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:12:42 BoogieIcfgContainer [2023-01-28 06:12:42,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:12:42,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:12:42,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:12:42,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:12:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:12:41" (1/3) ... [2023-01-28 06:12:42,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29038f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:12:42, skipping insertion in model container [2023-01-28 06:12:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:42" (2/3) ... [2023-01-28 06:12:42,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29038f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:12:42, skipping insertion in model container [2023-01-28 06:12:42,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:12:42" (3/3) ... [2023-01-28 06:12:42,725 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-01-28 06:12:42,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:12:42,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 06:12:42,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:12:42,817 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 06:12:42,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 180 flow [2023-01-28 06:12:42,901 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-01-28 06:12:42,901 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:12:42,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 4/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-01-28 06:12:42,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 180 flow [2023-01-28 06:12:42,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2023-01-28 06:12:42,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:12:42,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 150 flow [2023-01-28 06:12:42,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 150 flow [2023-01-28 06:12:42,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 150 flow [2023-01-28 06:12:42,952 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2023-01-28 06:12:42,952 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:12:42,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-28 06:12:42,953 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-01-28 06:12:44,675 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-01-28 06:12:44,675 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-01-28 06:12:44,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:12:44,696 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;@216ce9b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:12:44,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 06:12:44,701 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-01-28 06:12:44,701 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:12:44,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:44,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:44,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:12:44,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1440544796, now seen corresponding path program 1 times [2023-01-28 06:12:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:44,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500859612] [2023-01-28 06:12:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:44,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:44,939 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 06:12:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500859612] [2023-01-28 06:12:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500859612] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:12:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:12:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:12:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43126727] [2023-01-28 06:12:44,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:12:44,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:12:44,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:44,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:12:44,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:12:44,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 142 [2023-01-28 06:12:44,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 06:12:44,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:44,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 142 [2023-01-28 06:12:44,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:44,999 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2023-01-28 06:12:44,999 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:12:45,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-01-28 06:12:45,001 INFO L137 encePairwiseOnDemand]: 140/142 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-01-28 06:12:45,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-01-28 06:12:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:12:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:12:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-01-28 06:12:45,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2023-01-28 06:12:45,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-01-28 06:12:45,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-01-28 06:12:45,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:45,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-01-28 06:12:45,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 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 06:12:45,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 06:12:45,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 06:12:45,020 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 222 transitions. [2023-01-28 06:12:45,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-01-28 06:12:45,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 06:12:45,022 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-01-28 06:12:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-01-28 06:12:45,026 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-01-28 06:12:45,026 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-01-28 06:12:45,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 06:12:45,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:45,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:45,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:12:45,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:12:45,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1703930448, now seen corresponding path program 1 times [2023-01-28 06:12:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:45,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133570392] [2023-01-28 06:12:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:45,516 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 06:12:45,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:45,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133570392] [2023-01-28 06:12:45,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133570392] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:12:45,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:12:45,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:12:45,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022390493] [2023-01-28 06:12:45,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:12:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:12:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:12:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:12:45,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 142 [2023-01-28 06:12:45,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 06:12:45,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:45,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 142 [2023-01-28 06:12:45,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:45,619 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-01-28 06:12:45,619 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:12:45,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2023-01-28 06:12:45,620 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-01-28 06:12:45,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-01-28 06:12:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:12:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:12:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2023-01-28 06:12:45,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.323943661971831 [2023-01-28 06:12:45,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 230 transitions. [2023-01-28 06:12:45,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 230 transitions. [2023-01-28 06:12:45,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:45,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 230 transitions. [2023-01-28 06:12:45,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 06:12:45,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 06:12:45,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 06:12:45,629 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 230 transitions. [2023-01-28 06:12:45,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-01-28 06:12:45,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:12:45,630 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-01-28 06:12:45,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-01-28 06:12:45,631 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-28 06:12:45,631 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-01-28 06:12:45,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 06:12:45,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:45,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:45,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:12:45,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:12:45,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1951074546, now seen corresponding path program 1 times [2023-01-28 06:12:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:45,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622542448] [2023-01-28 06:12:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622542448] [2023-01-28 06:12:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622542448] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:12:45,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712426286] [2023-01-28 06:12:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:45,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:45,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:45,942 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 06:12:45,967 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 06:12:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:46,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 06:12:46,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:12:46,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:46,127 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 14 treesize of output 16 [2023-01-28 06:12:46,142 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-28 06:12:46,142 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 29 treesize of output 34 [2023-01-28 06:12:46,194 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 14 treesize of output 16 [2023-01-28 06:12:46,268 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-28 06:12:46,269 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 1 case distinctions, treesize of input 19 treesize of output 18 [2023-01-28 06:12:46,299 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:46,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:46,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:12:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:46,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712426286] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:12:46,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:12:46,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-01-28 06:12:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573232712] [2023-01-28 06:12:46,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:12:46,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 06:12:46,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 06:12:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-01-28 06:12:46,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 142 [2023-01-28 06:12:46,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 58 flow. Second operand has 18 states, 18 states have (on average 39.05555555555556) internal successors, (703), 18 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 06:12:46,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:46,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 142 [2023-01-28 06:12:46,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:46,705 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2023-01-28 06:12:46,705 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 06:12:46,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-01-28 06:12:46,706 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-01-28 06:12:46,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 163 flow [2023-01-28 06:12:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:12:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:12:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 366 transitions. [2023-01-28 06:12:46,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2863849765258216 [2023-01-28 06:12:46,707 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 366 transitions. [2023-01-28 06:12:46,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 366 transitions. [2023-01-28 06:12:46,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:46,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 366 transitions. [2023-01-28 06:12:46,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.666666666666664) internal successors, (366), 9 states have internal predecessors, (366), 0 states have call successors, (0), 0 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 06:12:46,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 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 06:12:46,711 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 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 06:12:46,711 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 9 states and 366 transitions. [2023-01-28 06:12:46,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 163 flow [2023-01-28 06:12:46,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 06:12:46,712 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 98 flow [2023-01-28 06:12:46,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-01-28 06:12:46,712 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-01-28 06:12:46,712 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 98 flow [2023-01-28 06:12:46,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 39.05555555555556) internal successors, (703), 18 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 06:12:46,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:46,713 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:46,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 06:12:46,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:46,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:12:46,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1171585968, now seen corresponding path program 2 times [2023-01-28 06:12:46,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:46,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819283954] [2023-01-28 06:12:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:46,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819283954] [2023-01-28 06:12:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819283954] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:12:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219151186] [2023-01-28 06:12:47,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:12:47,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:47,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:47,272 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 06:12:47,274 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 06:12:47,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:12:47,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:12:47,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 06:12:47,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:12:47,402 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-01-28 06:12:47,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2023-01-28 06:12:47,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:47,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:47,504 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 06:12:47,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2023-01-28 06:12:47,543 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 14 treesize of output 16 [2023-01-28 06:12:47,598 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 14 treesize of output 16 [2023-01-28 06:12:47,630 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 14 treesize of output 16 [2023-01-28 06:12:47,657 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 14 treesize of output 16 [2023-01-28 06:12:47,691 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 14 treesize of output 16 [2023-01-28 06:12:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:47,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:12:47,784 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-28 06:12:47,793 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-28 06:12:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-01-28 06:12:47,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219151186] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:12:47,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:12:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-01-28 06:12:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496713002] [2023-01-28 06:12:47,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:12:47,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 06:12:47,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 06:12:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=8, NotChecked=94, Total=702 [2023-01-28 06:12:47,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-28 06:12:47,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 98 flow. Second operand has 27 states, 27 states have (on average 37.629629629629626) internal successors, (1016), 27 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 06:12:47,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:47,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-28 06:12:47,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:48,502 INFO L130 PetriNetUnfolder]: 14/44 cut-off events. [2023-01-28 06:12:48,502 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-28 06:12:48,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 44 events. 14/44 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 2 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 153. Up to 13 conditions per place. [2023-01-28 06:12:48,503 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 17 selfloop transitions, 9 changer transitions 2/28 dead transitions. [2023-01-28 06:12:48,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 186 flow [2023-01-28 06:12:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:12:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:12:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 317 transitions. [2023-01-28 06:12:48,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2790492957746479 [2023-01-28 06:12:48,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 317 transitions. [2023-01-28 06:12:48,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 317 transitions. [2023-01-28 06:12:48,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:48,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 317 transitions. [2023-01-28 06:12:48,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 06:12:48,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 06:12:48,507 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 06:12:48,507 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 98 flow. Second operand 8 states and 317 transitions. [2023-01-28 06:12:48,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 186 flow [2023-01-28 06:12:48,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 162 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 06:12:48,509 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 108 flow [2023-01-28 06:12:48,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-01-28 06:12:48,509 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2023-01-28 06:12:48,509 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 108 flow [2023-01-28 06:12:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 37.629629629629626) internal successors, (1016), 27 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 06:12:48,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:48,510 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:48,517 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 06:12:48,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 06:12:48,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:12:48,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:48,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1959732808, now seen corresponding path program 3 times [2023-01-28 06:12:48,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:48,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687223013] [2023-01-28 06:12:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:49,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687223013] [2023-01-28 06:12:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687223013] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:12:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440405033] [2023-01-28 06:12:49,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:12:49,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:49,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:49,093 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 06:12:49,141 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 06:12:49,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 06:12:49,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:12:49,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 06:12:49,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:12:49,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:49,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:49,285 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2023-01-28 06:12:49,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 39 treesize of output 61 [2023-01-28 06:12:49,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:49,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:49,463 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-01-28 06:12:49,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:49,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:12:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:49,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:12:49,794 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-01-28 06:12:49,797 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-28 06:12:49,801 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-28 06:12:49,805 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-01-28 06:12:49,808 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-28 06:12:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2023-01-28 06:12:49,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440405033] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:12:49,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:12:49,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-01-28 06:12:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095636011] [2023-01-28 06:12:49,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:12:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 06:12:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:49,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 06:12:49,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=543, Unknown=6, NotChecked=250, Total=870 [2023-01-28 06:12:49,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-28 06:12:49,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 108 flow. Second operand has 30 states, 30 states have (on average 37.56666666666667) internal successors, (1127), 30 states have internal predecessors, (1127), 0 states have call successors, (0), 0 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 06:12:49,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:49,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-28 06:12:49,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:50,871 INFO L130 PetriNetUnfolder]: 17/57 cut-off events. [2023-01-28 06:12:50,871 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-01-28 06:12:50,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 57 events. 17/57 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 99 event pairs, 1 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 206. Up to 20 conditions per place. [2023-01-28 06:12:50,872 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 19 changer transitions 6/42 dead transitions. [2023-01-28 06:12:50,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 310 flow [2023-01-28 06:12:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 06:12:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 06:12:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 620 transitions. [2023-01-28 06:12:50,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.272887323943662 [2023-01-28 06:12:50,874 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 620 transitions. [2023-01-28 06:12:50,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 620 transitions. [2023-01-28 06:12:50,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:50,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 620 transitions. [2023-01-28 06:12:50,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 38.75) internal successors, (620), 16 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 06:12:50,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 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 06:12:50,878 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 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 06:12:50,878 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 108 flow. Second operand 16 states and 620 transitions. [2023-01-28 06:12:50,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 310 flow [2023-01-28 06:12:50,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 290 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 06:12:50,880 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 202 flow [2023-01-28 06:12:50,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=202, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-01-28 06:12:50,881 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 27 predicate places. [2023-01-28 06:12:50,881 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 202 flow [2023-01-28 06:12:50,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 37.56666666666667) internal successors, (1127), 30 states have internal predecessors, (1127), 0 states have call successors, (0), 0 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 06:12:50,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:50,882 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:50,887 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 06:12:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:51,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:12:51,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -622481072, now seen corresponding path program 4 times [2023-01-28 06:12:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:51,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88272230] [2023-01-28 06:12:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:51,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:51,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88272230] [2023-01-28 06:12:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88272230] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:12:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118983783] [2023-01-28 06:12:51,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:12:51,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:51,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:51,532 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 06:12:51,584 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 06:12:51,645 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:12:51,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:12:51,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 06:12:51,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:12:51,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:51,657 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 14 treesize of output 16 [2023-01-28 06:12:51,669 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 06:12:51,669 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 06:12:51,713 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 14 treesize of output 16 [2023-01-28 06:12:51,781 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-28 06:12:51,781 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 1 case distinctions, treesize of input 19 treesize of output 18 [2023-01-28 06:12:51,816 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:51,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:51,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:51,857 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:51,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:51,899 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:51,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:51,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:51,940 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:51,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:51,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:51,984 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:51,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:52,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:12:52,028 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 06:12:52,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-28 06:12:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:52,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118983783] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:36,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:36,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-01-28 06:14:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385469343] [2023-01-28 06:14:36,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:36,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-28 06:14:36,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-28 06:14:36,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=849, Unknown=48, NotChecked=0, Total=1056 [2023-01-28 06:14:36,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-28 06:14:36,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 202 flow. Second operand has 33 states, 33 states have (on average 37.54545454545455) internal successors, (1239), 33 states have internal predecessors, (1239), 0 states have call successors, (0), 0 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 06:14:36,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:36,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-28 06:14:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:36,911 INFO L130 PetriNetUnfolder]: 12/46 cut-off events. [2023-01-28 06:14:36,911 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-01-28 06:14:36,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 46 events. 12/46 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 1 based on Foata normal form. 4/50 useless extension candidates. Maximal degree in co-relation 182. Up to 14 conditions per place. [2023-01-28 06:14:36,912 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-01-28 06:14:36,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 33 transitions, 272 flow [2023-01-28 06:14:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 06:14:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 06:14:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 425 transitions. [2023-01-28 06:14:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27208706786171577 [2023-01-28 06:14:36,914 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 425 transitions. [2023-01-28 06:14:36,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 425 transitions. [2023-01-28 06:14:36,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:36,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 425 transitions. [2023-01-28 06:14:36,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.63636363636363) internal successors, (425), 11 states have internal predecessors, (425), 0 states have call successors, (0), 0 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 06:14:36,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 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 06:14:36,916 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 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 06:14:36,916 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 202 flow. Second operand 11 states and 425 transitions. [2023-01-28 06:14:36,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 33 transitions, 272 flow [2023-01-28 06:14:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 181 flow, removed 20 selfloop flow, removed 14 redundant places. [2023-01-28 06:14:36,918 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-01-28 06:14:36,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-01-28 06:14:36,918 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 22 predicate places. [2023-01-28 06:14:36,918 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-01-28 06:14:36,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 37.54545454545455) internal successors, (1239), 33 states have internal predecessors, (1239), 0 states have call successors, (0), 0 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 06:14:36,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 06:14:36,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 06:14:36,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 06:14:36,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 06:14:37,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:37,126 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-01-28 06:14:37,147 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:14:37,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:14:37,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:14:37 BasicIcfg [2023-01-28 06:14:37,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:14:37,152 INFO L158 Benchmark]: Toolchain (without parser) took 115384.44ms. Allocated memory was 346.0MB in the beginning and 742.4MB in the end (delta: 396.4MB). Free memory was 283.7MB in the beginning and 705.6MB in the end (delta: -421.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.0GB. [2023-01-28 06:14:37,152 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 346.0MB. Free memory is still 295.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:14:37,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.24ms. Allocated memory was 346.0MB in the beginning and 555.7MB in the end (delta: 209.7MB). Free memory was 283.4MB in the beginning and 512.1MB in the end (delta: -228.7MB). Peak memory consumption was 29.8MB. Max. memory is 16.0GB. [2023-01-28 06:14:37,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.55ms. Allocated memory is still 555.7MB. Free memory was 512.1MB in the beginning and 510.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:14:37,153 INFO L158 Benchmark]: Boogie Preprocessor took 33.69ms. Allocated memory is still 555.7MB. Free memory was 510.0MB in the beginning and 507.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:14:37,153 INFO L158 Benchmark]: RCFGBuilder took 336.39ms. Allocated memory is still 555.7MB. Free memory was 507.9MB in the beginning and 494.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 06:14:37,153 INFO L158 Benchmark]: TraceAbstraction took 114444.11ms. Allocated memory was 555.7MB in the beginning and 742.4MB in the end (delta: 186.6MB). Free memory was 493.2MB in the beginning and 705.6MB in the end (delta: -212.3MB). Peak memory consumption was 56.9MB. Max. memory is 16.0GB. [2023-01-28 06:14:37,154 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 346.0MB. Free memory is still 295.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 510.24ms. Allocated memory was 346.0MB in the beginning and 555.7MB in the end (delta: 209.7MB). Free memory was 283.4MB in the beginning and 512.1MB in the end (delta: -228.7MB). Peak memory consumption was 29.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.55ms. Allocated memory is still 555.7MB. Free memory was 512.1MB in the beginning and 510.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.69ms. Allocated memory is still 555.7MB. Free memory was 510.0MB in the beginning and 507.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.39ms. Allocated memory is still 555.7MB. Free memory was 507.9MB in the beginning and 494.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 114444.11ms. Allocated memory was 555.7MB in the beginning and 742.4MB in the end (delta: 186.6MB). Free memory was 493.2MB in the beginning and 705.6MB in the end (delta: -212.3MB). Peak memory consumption was 56.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 73 PlacesBefore, 19 PlacesAfterwards, 69 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 150, independent: 140, independent conditional: 0, independent unconditional: 140, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 89, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 150, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 89, unknown conditional: 0, unknown unconditional: 89] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 114.3s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 25 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 259 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1172 IncrementalHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 0 mSDtfsCounter, 1172 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 143 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 106.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=5, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 108.4s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 43 QuantifiedInterpolants, 3617 SizeOfPredicates, 35 NumberOfNonLiveVariables, 840 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 14/141 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 06:14:37,216 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...