/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:14:40,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:14:40,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:14:40,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:14:40,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:14:40,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:14:40,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:14:40,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:14:40,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:14:40,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:14:40,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:14:40,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:14:40,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:14:40,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:14:40,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:14:40,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:14:40,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:14:40,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:14:40,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:14:40,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:14:40,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:14:40,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:14:40,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:14:40,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:14:40,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 13:14:40,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 13:14:40,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 13:14:40,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 13:14:40,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 13:14:40,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 13:14:40,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:14:40,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:14:40,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:14:40,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:14:40,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:14:40,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:14:40,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:14:40,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:14:40,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:14:40,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:14:40,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:14:40,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 13:14:40,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:14:40,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:14:40,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:14:40,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:14:40,390 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:14:40,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:14:40,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:14:40,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:14:40,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:14:40,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:14:40,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:14:40,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:14:40,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:14:40,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:14:40,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:14:40,394 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:14:40,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:14:40,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:14:40,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:14:40,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:14:40,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:14:40,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 13:14:40,752 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 13:14:40,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-03-24 13:14:40,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6df1a8c/e32c73e86f4a4bc1bb65f98f1a268810/FLAG60a35e88b [2021-03-24 13:14:41,278 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 13:14:41,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-03-24 13:14:41,279 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:41,279 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:41,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6df1a8c/e32c73e86f4a4bc1bb65f98f1a268810/FLAG60a35e88b [2021-03-24 13:14:41,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6df1a8c/e32c73e86f4a4bc1bb65f98f1a268810 [2021-03-24 13:14:41,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:14:41,335 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 13:14:41,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:41,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 13:14:41,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 13:14:41,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0c2543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41, skipping insertion in model container [2021-03-24 13:14:41,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 13:14:41,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 13:14:41,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:41,516 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 13:14:41,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:41,566 INFO L208 MainTranslator]: Completed translation [2021-03-24 13:14:41,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41 WrapperNode [2021-03-24 13:14:41,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:41,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:41,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:14:41,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:14:41,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:41,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:14:41,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:14:41,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:14:41,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... [2021-03-24 13:14:41,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:14:41,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:14:41,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:14:41,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:14:41,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:14:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-24 13:14:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 13:14:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:14:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:14:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 13:14:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-24 13:14:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 13:14:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure myThread [2021-03-24 13:14:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure myThread [2021-03-24 13:14:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 13:14:41,696 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:14:41,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:14:41,952 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 13:14:41,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:41 BoogieIcfgContainer [2021-03-24 13:14:41,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:14:41,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:14:41,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:14:41,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:14:41,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 01:14:41" (1/3) ... [2021-03-24 13:14:41,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d9205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:41, skipping insertion in model container [2021-03-24 13:14:41,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:41" (2/3) ... [2021-03-24 13:14:41,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d9205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:41, skipping insertion in model container [2021-03-24 13:14:41,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:41" (3/3) ... [2021-03-24 13:14:41,966 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadReturn.c [2021-03-24 13:14:41,971 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:14:41,975 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:14:41,976 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:14:41,996 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:41,997 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:41,997 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:41,997 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:42,000 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:42,000 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:42,009 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 13:14:42,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 13:14:42,054 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:14:42,054 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:14:42,054 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:14:42,054 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:14:42,054 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:14:42,054 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:14:42,055 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:14:42,055 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:14:42,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2021-03-24 13:14:42,100 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-24 13:14:42,101 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:14:42,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:14:42,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2021-03-24 13:14:42,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 44 flow [2021-03-24 13:14:42,109 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:14:42,117 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 44 flow [2021-03-24 13:14:42,120 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 44 flow [2021-03-24 13:14:42,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 44 flow [2021-03-24 13:14:42,136 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 13:14:42,136 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:14:42,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 19 events. 0/19 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:14:42,139 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-24 13:14:43,037 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-24 13:14:43,037 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-24 13:14:43,039 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 931 [2021-03-24 13:14:43,046 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 13:14:43,046 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:14:43,046 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:43,047 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:14:43,047 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1293545369, now seen corresponding path program 1 times [2021-03-24 13:14:43,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:43,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770959102] [2021-03-24 13:14:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:43,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:43,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:14:43,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:43,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 13:14:43,286 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-03-24 13:14:43,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 13:14:43,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:43,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:14:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:43,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770959102] [2021-03-24 13:14:43,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:43,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 13:14:43,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373238684] [2021-03-24 13:14:43,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 13:14:43,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:43,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 13:14:43,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 13:14:43,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 40 [2021-03-24 13:14:43,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 22 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2021-03-24 13:14:43,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:43,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 40 [2021-03-24 13:14:43,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:43,459 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 13:14:43,459 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-03-24 13:14:43,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 13:14:43,461 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-24 13:14:43,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 30 flow [2021-03-24 13:14:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 13:14:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 13:14:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2021-03-24 13:14:43,470 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.555 [2021-03-24 13:14:43,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2021-03-24 13:14:43,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2021-03-24 13:14:43,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:43,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2021-03-24 13:14:43,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2021-03-24 13:14:43,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2021-03-24 13:14:43,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2021-03-24 13:14:43,481 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 22 flow. Second operand 5 states and 111 transitions. [2021-03-24 13:14:43,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 30 flow [2021-03-24 13:14:43,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 7 transitions, 26 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:14:43,485 INFO L241 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2021-03-24 13:14:43,486 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2021-03-24 13:14:43,487 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 1 predicate places. [2021-03-24 13:14:43,487 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 0 transitions, 0 flow [2021-03-24 13:14:43,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2021-03-24 13:14:43,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:14:43,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:14:43 BasicIcfg [2021-03-24 13:14:43,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:14:43,492 INFO L168 Benchmark]: Toolchain (without parser) took 2156.50 ms. Allocated memory is still 331.4 MB. Free memory was 294.5 MB in the beginning and 183.1 MB in the end (delta: 111.3 MB). Peak memory consumption was 114.2 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:43,493 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 331.4 MB. Free memory was 312.6 MB in the beginning and 312.5 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:43,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.32 ms. Allocated memory is still 331.4 MB. Free memory was 294.3 MB in the beginning and 315.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:43,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.36 ms. Allocated memory is still 331.4 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:43,494 INFO L168 Benchmark]: Boogie Preprocessor took 25.65 ms. Allocated memory is still 331.4 MB. Free memory was 313.2 MB in the beginning and 312.9 MB in the end (delta: 221.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:43,495 INFO L168 Benchmark]: RCFGBuilder took 330.36 ms. Allocated memory is still 331.4 MB. Free memory was 312.1 MB in the beginning and 297.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:43,495 INFO L168 Benchmark]: TraceAbstraction took 1536.53 ms. Allocated memory is still 331.4 MB. Free memory was 297.4 MB in the beginning and 183.1 MB in the end (delta: 114.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:43,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 331.4 MB. Free memory was 312.6 MB in the beginning and 312.5 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 230.32 ms. Allocated memory is still 331.4 MB. Free memory was 294.3 MB in the beginning and 315.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.36 ms. Allocated memory is still 331.4 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.65 ms. Allocated memory is still 331.4 MB. Free memory was 313.2 MB in the beginning and 312.9 MB in the end (delta: 221.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 330.36 ms. Allocated memory is still 331.4 MB. Free memory was 312.1 MB in the beginning and 297.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1536.53 ms. Allocated memory is still 331.4 MB. Free memory was 297.4 MB in the beginning and 183.1 MB in the end (delta: 114.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 917.0ms, 23 PlacesBefore, 12 PlacesAfterwards, 19 TransitionsBefore, 8 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1439.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 99.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 988.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 1 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 132.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 38.6ms SatisfiabilityAnalysisTime, 202.6ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 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! Received shutdown request...