/usr/bin/java -Xmx8000000000 -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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:20:45,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:20:45,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:20:45,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:20:45,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:20:45,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:20:45,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:20:45,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:20:45,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:20:45,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:20:45,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:20:45,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:20:45,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:20:45,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:20:45,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:20:45,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:20:45,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:20:45,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:20:45,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:20:45,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:20:45,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:20:45,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:20:45,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:20:45,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:20:45,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:20:45,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:20:45,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:20:45,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:20:45,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:20:45,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:20:45,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:20:45,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:20:45,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:20:45,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:20:45,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:20:45,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:20:45,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:20:45,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:20:45,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:20:45,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:20:45,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:20:45,348 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-NoLbe.epf [2022-12-12 12:20:45,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:20:45,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:20:45,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:20:45,374 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:20:45,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:20:45,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:20:45,375 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:20:45,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:20:45,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:20:45,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:20:45,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:20:45,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:20:45,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:20:45,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:20:45,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:20:45,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:20:45,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:20:45,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:20:45,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:20:45,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:20:45,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:20:45,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:20:45,665 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:20:45,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-12-12 12:20:46,714 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:20:46,940 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:20:46,941 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-12-12 12:20:46,950 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025a20f3a/aa5654727ae54c1c9c83172b7ef2ab33/FLAGb83a07212 [2022-12-12 12:20:46,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025a20f3a/aa5654727ae54c1c9c83172b7ef2ab33 [2022-12-12 12:20:46,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:20:46,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:20:46,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:20:46,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:20:46,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:20:46,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:20:46" (1/1) ... [2022-12-12 12:20:46,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f0939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:46, skipping insertion in model container [2022-12-12 12:20:46,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:20:46" (1/1) ... [2022-12-12 12:20:46,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:20:47,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:20:47,155 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2022-12-12 12:20:47,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:20:47,292 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:20:47,301 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2022-12-12 12:20:47,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:20:47,356 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:20:47,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47 WrapperNode [2022-12-12 12:20:47,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:20:47,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:20:47,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:20:47,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:20:47,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,386 INFO L138 Inliner]: procedures = 162, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-12-12 12:20:47,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:20:47,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:20:47,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:20:47,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:20:47,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:20:47,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:20:47,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:20:47,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:20:47,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (1/1) ... [2022-12-12 12:20:47,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:20:47,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:20:47,428 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) [2022-12-12 12:20:47,437 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 [2022-12-12 12:20:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-12 12:20:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-12 12:20:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:20:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 12:20:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:20:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:20:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:20:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:20:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:20:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:20:47,465 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:20:47,545 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:20:47,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:20:47,690 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:20:47,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:20:47,695 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-12 12:20:47,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:20:47 BoogieIcfgContainer [2022-12-12 12:20:47,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:20:47,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:20:47,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:20:47,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:20:47,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:20:46" (1/3) ... [2022-12-12 12:20:47,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560352b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:20:47, skipping insertion in model container [2022-12-12 12:20:47,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:20:47" (2/3) ... [2022-12-12 12:20:47,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560352b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:20:47, skipping insertion in model container [2022-12-12 12:20:47,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:20:47" (3/3) ... [2022-12-12 12:20:47,702 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2022-12-12 12:20:47,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:20:47,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:20:47,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:20:47,818 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 12:20:47,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 139 flow [2022-12-12 12:20:47,894 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-12-12 12:20:47,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:20:47,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 66 events. 4/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-12 12:20:47,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 67 transitions, 139 flow [2022-12-12 12:20:47,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 62 transitions, 127 flow [2022-12-12 12:20:47,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:20:47,914 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;@2e722f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:20:47,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 12:20:47,944 INFO L130 PetriNetUnfolder]: 0/49 cut-off events. [2022-12-12 12:20:47,945 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:20:47,945 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:47,945 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:47,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-12 12:20:47,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1688354669, now seen corresponding path program 1 times [2022-12-12 12:20:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:47,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121446545] [2022-12-12 12:20:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:20:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:48,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121446545] [2022-12-12 12:20:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121446545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:20:48,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:20:48,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 12:20:48,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788248608] [2022-12-12 12:20:48,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:20:48,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 12:20:48,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 12:20:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 12:20:48,267 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2022-12-12 12:20:48,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 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) [2022-12-12 12:20:48,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:48,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2022-12-12 12:20:48,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:48,330 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2022-12-12 12:20:48,330 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:20:48,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 72 events. 2/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 53. Up to 8 conditions per place. [2022-12-12 12:20:48,331 INFO L137 encePairwiseOnDemand]: 61/67 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2022-12-12 12:20:48,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 157 flow [2022-12-12 12:20:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 12:20:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 12:20:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 322 transitions. [2022-12-12 12:20:48,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8009950248756219 [2022-12-12 12:20:48,350 INFO L295 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2022-12-12 12:20:48,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 157 flow [2022-12-12 12:20:48,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 144 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-12 12:20:48,354 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 144 flow [2022-12-12 12:20:48,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 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) [2022-12-12 12:20:48,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-12-12 12:20:48,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-12-12 12:20:48,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-12 12:20:48,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:20:48,357 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 12:20:48,363 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:20:48,363 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:20:48,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:20:48 BasicIcfg [2022-12-12 12:20:48,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:20:48,371 INFO L158 Benchmark]: Toolchain (without parser) took 1408.10ms. Allocated memory is still 175.1MB. Free memory was 150.2MB in the beginning and 108.8MB in the end (delta: 41.3MB). Peak memory consumption was 41.2MB. Max. memory is 8.0GB. [2022-12-12 12:20:48,371 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 103.7MB in the end (delta: 79.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:20:48,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.81ms. Allocated memory is still 175.1MB. Free memory was 150.2MB in the beginning and 131.2MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 12:20:48,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.16ms. Allocated memory is still 175.1MB. Free memory was 131.2MB in the beginning and 129.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:20:48,372 INFO L158 Benchmark]: Boogie Preprocessor took 16.51ms. Allocated memory is still 175.1MB. Free memory was 129.2MB in the beginning and 127.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:20:48,372 INFO L158 Benchmark]: RCFGBuilder took 293.11ms. Allocated memory is still 175.1MB. Free memory was 127.8MB in the beginning and 115.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 12:20:48,373 INFO L158 Benchmark]: TraceAbstraction took 672.29ms. Allocated memory is still 175.1MB. Free memory was 114.2MB in the beginning and 108.8MB in the end (delta: 5.3MB). Peak memory consumption was 5.5MB. Max. memory is 8.0GB. [2022-12-12 12:20:48,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 103.7MB in the beginning and 103.7MB in the end (delta: 79.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 393.81ms. Allocated memory is still 175.1MB. Free memory was 150.2MB in the beginning and 131.2MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.16ms. Allocated memory is still 175.1MB. Free memory was 131.2MB in the beginning and 129.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.51ms. Allocated memory is still 175.1MB. Free memory was 129.2MB in the beginning and 127.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 293.11ms. Allocated memory is still 175.1MB. Free memory was 127.8MB in the beginning and 115.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 672.29ms. Allocated memory is still 175.1MB. Free memory was 114.2MB in the beginning and 108.8MB in the end (delta: 5.3MB). Peak memory consumption was 5.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 3 procedures, 89 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=1, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:20:48,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...