/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-Sleep-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 07:20:08,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 07:20:08,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 07:20:08,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 07:20:08,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-12 07:20:08,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-12 07:20:08,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-12 07:20:08,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-12 07:20:08,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-12 07:20:08,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-12 07:20:08,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-12 07:20:08,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-12 07:20:08,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 07:20:08,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 07:20:08,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 07:20:08,060 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-Sleep-NoLbe-Delay.epf [2021-03-12 07:20:08,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 07:20:08,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 07:20:08,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-12 07:20:08,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-12 07:20:08,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 07:20:08,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 07:20:08,081 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 07:20:08,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 07:20:08,081 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 07:20:08,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 07:20:08,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 07:20:08,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 07:20:08,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 07:20:08,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 07:20:08,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 07:20:08,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 07:20:08,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-12 07:20:08,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-12 07:20:08,085 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-03-12 07:20:08,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 07:20:08,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 07:20:08,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 07:20:08,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 07:20:08,318 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-12 07:20:08,318 INFO L275 PluginConnector]: CDTParser initialized [2021-03-12 07:20:08,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-03-12 07:20:08,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093ef649f/474c9635ace94c0d98b0feee24265061/FLAG27904a265 [2021-03-12 07:20:08,745 INFO L306 CDTParser]: Found 1 translation units. [2021-03-12 07:20:08,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-03-12 07:20:08,746 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-12 07:20:08,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093ef649f/474c9635ace94c0d98b0feee24265061/FLAG27904a265 [2021-03-12 07:20:09,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093ef649f/474c9635ace94c0d98b0feee24265061 [2021-03-12 07:20:09,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 07:20:09,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-12 07:20:09,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-12 07:20:09,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-12 07:20:09,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-12 07:20:09,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7247a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09, skipping insertion in model container [2021-03-12 07:20:09,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-12 07:20:09,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-12 07:20:09,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-12 07:20:09,263 INFO L203 MainTranslator]: Completed pre-run [2021-03-12 07:20:09,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-12 07:20:09,282 INFO L208 MainTranslator]: Completed translation [2021-03-12 07:20:09,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09 WrapperNode [2021-03-12 07:20:09,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-12 07:20:09,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 07:20:09,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 07:20:09,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 07:20:09,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 07:20:09,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 07:20:09,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 07:20:09,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 07:20:09,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (1/1) ... [2021-03-12 07:20:09,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 07:20:09,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 07:20:09,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 07:20:09,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 07:20:09,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (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 [2021-03-12 07:20:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-12 07:20:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-12 07:20:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-12 07:20:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-12 07:20:09,386 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-12 07:20:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 07:20:09,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 07:20:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-12 07:20:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-12 07:20:09,387 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 07:20:09,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 07:20:09,565 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-12 07:20:09,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 07:20:09 BoogieIcfgContainer [2021-03-12 07:20:09,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 07:20:09,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 07:20:09,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 07:20:09,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 07:20:09,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.03 07:20:09" (1/3) ... [2021-03-12 07:20:09,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc3145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 07:20:09, skipping insertion in model container [2021-03-12 07:20:09,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.03 07:20:09" (2/3) ... [2021-03-12 07:20:09,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc3145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 07:20:09, skipping insertion in model container [2021-03-12 07:20:09,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 07:20:09" (3/3) ... [2021-03-12 07:20:09,571 INFO L111 eAbstractionObserver]: Analyzing ICFG 11b-double-end.c [2021-03-12 07:20:09,574 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-12 07:20:09,574 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 07:20:09,576 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 07:20:09,576 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 07:20:09,608 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,609 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,610 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,610 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,610 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,610 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,611 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,611 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,611 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,612 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-12 07:20:09,616 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-12 07:20:09,627 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-03-12 07:20:09,667 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 07:20:09,668 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-12 07:20:09,668 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 07:20:09,668 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 07:20:09,668 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 07:20:09,668 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 07:20:09,668 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 07:20:09,668 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-03-12 07:20:09,715 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 07:20:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 07:20:09,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2116110641, now seen corresponding path program 1 times [2021-03-12 07:20:09,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 07:20:09,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31695401] [2021-03-12 07:20:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 07:20:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 07:20:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 07:20:09,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31695401] [2021-03-12 07:20:09,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 07:20:09,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 07:20:09,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589407677] [2021-03-12 07:20:09,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 07:20:09,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 07:20:09,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 07:20:09,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-12 07:20:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 07:20:09,844 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 07:20:09,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-03-12 07:20:09,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 07:20:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 07:20:09,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 07:20:09,903 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 07:20:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 07:20:09,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1548085085, now seen corresponding path program 2 times [2021-03-12 07:20:09,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 07:20:09,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955313183] [2021-03-12 07:20:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 07:20:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-12 07:20:09,918 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-12 07:20:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-12 07:20:09,924 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-12 07:20:09,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-12 07:20:09,934 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-12 07:20:09,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 07:20:09,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 07:20:09 BasicIcfg [2021-03-12 07:20:09,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 07:20:09,961 INFO L168 Benchmark]: Toolchain (without parser) took 799.89 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.6 MB in the beginning and 340.7 MB in the end (delta: -105.1 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.0 GB. [2021-03-12 07:20:09,961 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 07:20:09,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.42 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.0 MB in the beginning and 343.9 MB in the end (delta: -109.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-12 07:20:09,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.14 ms. Allocated memory is still 358.6 MB. Free memory was 343.9 MB in the beginning and 342.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 07:20:09,962 INFO L168 Benchmark]: Boogie Preprocessor took 15.18 ms. Allocated memory is still 358.6 MB. Free memory was 342.3 MB in the beginning and 341.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 07:20:09,962 INFO L168 Benchmark]: RCFGBuilder took 232.04 ms. Allocated memory is still 358.6 MB. Free memory was 341.1 MB in the beginning and 329.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-12 07:20:09,963 INFO L168 Benchmark]: TraceAbstraction took 392.76 ms. Allocated memory is still 358.6 MB. Free memory was 329.7 MB in the beginning and 340.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.0 GB. [2021-03-12 07:20:09,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 120.42 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.0 MB in the beginning and 343.9 MB in the end (delta: -109.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.14 ms. Allocated memory is still 358.6 MB. Free memory was 343.9 MB in the beginning and 342.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.18 ms. Allocated memory is still 358.6 MB. Free memory was 342.3 MB in the beginning and 341.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 232.04 ms. Allocated memory is still 358.6 MB. Free memory was 341.1 MB in the beginning and 329.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 392.76 ms. Allocated memory is still 358.6 MB. Free memory was 329.7 MB in the beginning and 340.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 30, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 27, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 37, negative conditional: 6, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 27, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 1, Negative unconditional cache size: 2, SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 37, negative conditional: 6, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 1, Negative unconditional cache size: 2, Eliminated conditions: 1 ], Maximal queried relation: 1, Independence queries for same thread: 3 - CounterExampleResult [Line: 32]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 VAL [arg={0:0}, arg={0:0}, x=1] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L19] 1 return (void*)NULL; VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=0] [L29] 0 x = x + 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=1] [L32] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 301.8ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.8ms, PartialOrderReductionTime: 92.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 6.2ms SsaConstructionTime, 22.4ms SatisfiabilityAnalysisTime, 48.1ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...