/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 21:27:56,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 21:27:56,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 21:27:56,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-16 21:27:56,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-16 21:27:56,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-16 21:27:56,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-16 21:27:56,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-16 21:27:56,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-16 21:27:56,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-16 21:27:56,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-16 21:27:56,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-16 21:27:56,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-16 21:27:56,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-16 21:27:56,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-16 21:27:56,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-16 21:27:56,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-16 21:27:56,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-16 21:27:56,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-16 21:27:56,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-16 21:27:56,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-16 21:27:56,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-16 21:27:56,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-16 21:27:56,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-16 21:27:56,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-16 21:27:56,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-16 21:27:56,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-16 21:27:56,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-16 21:27:56,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-16 21:27:56,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-16 21:27:56,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-16 21:27:56,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-16 21:27:56,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-16 21:27:56,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 21:27:56,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 21:27:56,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 21:27:56,364 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-MCRwithoutDepranks-Lazy.epf [2022-02-16 21:27:56,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 21:27:56,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 21:27:56,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 21:27:56,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 21:27:56,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 21:27:56,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 21:27:56,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 21:27:56,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 21:27:56,399 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 21:27:56,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 21:27:56,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 21:27:56,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 21:27:56,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 21:27:56,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 21:27:56,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 21:27:56,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 21:27:56,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 21:27:56,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 21:27:56,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 21:27:56,402 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 21:27:56,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 21:27:56,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 21:27:56,402 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-16 21:27:56,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 21:27:56,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 21:27:56,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 21:27:56,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 21:27:56,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-16 21:27:56,642 INFO L275 PluginConnector]: CDTParser initialized [2022-02-16 21:27:56,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2022-02-16 21:27:56,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07304b27e/1ade17bee1dd46cfaf89fe5d444acd5d/FLAGa8dfa02fb [2022-02-16 21:27:57,074 INFO L306 CDTParser]: Found 1 translation units. [2022-02-16 21:27:57,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2022-02-16 21:27:57,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07304b27e/1ade17bee1dd46cfaf89fe5d444acd5d/FLAGa8dfa02fb [2022-02-16 21:27:57,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07304b27e/1ade17bee1dd46cfaf89fe5d444acd5d [2022-02-16 21:27:57,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 21:27:57,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-16 21:27:57,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-16 21:27:57,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-16 21:27:57,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-16 21:27:57,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfb1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57, skipping insertion in model container [2022-02-16 21:27:57,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-16 21:27:57,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-16 21:27:57,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2022-02-16 21:27:57,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2022-02-16 21:27:57,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 21:27:57,795 INFO L203 MainTranslator]: Completed pre-run [2022-02-16 21:27:57,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2022-02-16 21:27:57,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2022-02-16 21:27:57,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-16 21:27:57,869 INFO L208 MainTranslator]: Completed translation [2022-02-16 21:27:57,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57 WrapperNode [2022-02-16 21:27:57,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-16 21:27:57,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 21:27:57,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 21:27:57,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 21:27:57,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,923 INFO L137 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 88 [2022-02-16 21:27:57,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 21:27:57,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 21:27:57,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 21:27:57,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 21:27:57,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 21:27:57,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 21:27:57,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 21:27:57,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 21:27:57,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (1/1) ... [2022-02-16 21:27:57,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 21:27:57,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 21:27:57,997 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) [2022-02-16 21:27:58,004 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 [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-02-16 21:27:58,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-16 21:27:58,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 21:27:58,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 21:27:58,028 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 21:27:58,149 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 21:27:58,151 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 21:27:58,340 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 21:27:58,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 21:27:58,405 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-16 21:27:58,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 09:27:58 BoogieIcfgContainer [2022-02-16 21:27:58,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 21:27:58,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 21:27:58,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 21:27:58,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 21:27:58,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 09:27:57" (1/3) ... [2022-02-16 21:27:58,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87e16b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 09:27:58, skipping insertion in model container [2022-02-16 21:27:58,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 09:27:57" (2/3) ... [2022-02-16 21:27:58,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87e16b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 09:27:58, skipping insertion in model container [2022-02-16 21:27:58,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 09:27:58" (3/3) ... [2022-02-16 21:27:58,415 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2022-02-16 21:27:58,418 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 21:27:58,418 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 21:27:58,418 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-16 21:27:58,419 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 21:27:58,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,441 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,442 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,443 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-16 21:27:58,451 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 21:27:58,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 21:27:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 21:27:58,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 21:27:58,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 21:27:58,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 21:27:58,521 INFO L339 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 21:27:58,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-16 21:27:58,573 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 48 transitions and produced 49 states. [2022-02-16 21:27:58,574 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-02-16 21:27:58,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 21:27:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2076453122, now seen corresponding path program 1 times [2022-02-16 21:27:58,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 21:27:58,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302458772] [2022-02-16 21:27:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 21:27:58,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 21:27:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 21:27:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 21:27:58,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 21:27:58,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302458772] [2022-02-16 21:27:58,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302458772] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 21:27:58,734 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 21:27:58,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 21:27:58,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235148675] [2022-02-16 21:27:58,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 21:27:58,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-16 21:27:58,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 21:27:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-16 21:27:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-16 21:27:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:58,764 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 21:27:58,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2022-02-16 21:27:58,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:58,797 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 48 transitions and produced 49 states. [2022-02-16 21:27:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:58,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 21:27:58,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-02-16 21:27:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 21:27:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2076482913, now seen corresponding path program 1 times [2022-02-16 21:27:58,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 21:27:58,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074493075] [2022-02-16 21:27:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 21:27:58,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 21:27:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 21:27:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 21:27:58,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 21:27:58,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074493075] [2022-02-16 21:27:58,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074493075] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 21:27:58,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 21:27:58,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 21:27:58,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402039510] [2022-02-16 21:27:58,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 21:27:58,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 21:27:58,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 21:27:58,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 21:27:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 21:27:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:58,920 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 21:27:58,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-02-16 21:27:58,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:58,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,130 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 100 transitions and produced 97 states. [2022-02-16 21:27:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 21:27:59,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-02-16 21:27:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 21:27:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1068168547, now seen corresponding path program 1 times [2022-02-16 21:27:59,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 21:27:59,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267619039] [2022-02-16 21:27:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 21:27:59,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 21:27:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 21:27:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-16 21:27:59,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 21:27:59,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267619039] [2022-02-16 21:27:59,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267619039] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 21:27:59,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112898484] [2022-02-16 21:27:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 21:27:59,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 21:27:59,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 21:27:59,251 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) [2022-02-16 21:27:59,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-16 21:27:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 21:27:59,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-16 21:27:59,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 21:27:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-16 21:27:59,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-16 21:27:59,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112898484] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 21:27:59,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-16 21:27:59,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-02-16 21:27:59,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889589484] [2022-02-16 21:27:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 21:27:59,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 21:27:59,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 21:27:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 21:27:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-16 21:27:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,439 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 21:27:59,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-02-16 21:27:59,439 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,439 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,534 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 93 transitions and produced 90 states. [2022-02-16 21:27:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-16 21:27:59,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-16 21:27:59,755 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-02-16 21:27:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 21:27:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1699433700, now seen corresponding path program 1 times [2022-02-16 21:27:59,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 21:27:59,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355896852] [2022-02-16 21:27:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 21:27:59,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 21:27:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 21:27:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-16 21:27:59,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 21:27:59,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355896852] [2022-02-16 21:27:59,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355896852] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 21:27:59,806 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 21:27:59,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 21:27:59,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798563046] [2022-02-16 21:27:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 21:27:59,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 21:27:59,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 21:27:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 21:27:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 21:27:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,808 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 21:27:59,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-02-16 21:27:59,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,938 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 101 transitions and produced 98 states. [2022-02-16 21:27:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:27:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:27:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-16 21:27:59,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-02-16 21:27:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 21:27:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash 65761698, now seen corresponding path program 1 times [2022-02-16 21:27:59,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 21:27:59,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476817779] [2022-02-16 21:27:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 21:27:59,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 21:27:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 21:28:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-16 21:28:00,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 21:28:00,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476817779] [2022-02-16 21:28:00,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476817779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 21:28:00,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 21:28:00,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 21:28:00,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319081072] [2022-02-16 21:28:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 21:28:00,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 21:28:00,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 21:28:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 21:28:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-16 21:28:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:28:00,019 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 21:28:00,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 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) [2022-02-16 21:28:00,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 21:28:00,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:28:00,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:28:00,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 21:28:00,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.