/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-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 23:28:36,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 23:28:36,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 23:28:36,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 23:28:36,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-01 23:28:36,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-01 23:28:36,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-01 23:28:36,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-01 23:28:36,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-01 23:28:36,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-01 23:28:36,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-01 23:28:36,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-01 23:28:36,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-01 23:28:36,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-01 23:28:36,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-01 23:28:36,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-01 23:28:36,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-01 23:28:36,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-01 23:28:36,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-01 23:28:36,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-01 23:28:36,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-01 23:28:36,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-01 23:28:36,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-01 23:28:36,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-01 23:28:36,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-01 23:28:36,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-01 23:28:36,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-01 23:28:36,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-01 23:28:36,236 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-POR-DelaySleep-NoLbe.epf [2021-06-01 23:28:36,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 23:28:36,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 23:28:36,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 23:28:36,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 23:28:36,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 23:28:36,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 23:28:36,257 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 23:28:36,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 23:28:36,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 23:28:36,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 23:28:36,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 23:28:36,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 23:28:36,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 23:28:36,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 23:28:36,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 23:28:36,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 23:28:36,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 23:28:36,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 23:28:36,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 23:28:36,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 23:28:36,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 23:28:36,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 23:28:36,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 23:28:36,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 23:28:36,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 23:28:36,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 23:28:36,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 23:28:36,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 23:28:36,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 23:28:36,262 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 23:28:36,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-01 23:28:36,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 23:28:36,262 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-01 23:28:36,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 23:28:36,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 23:28:36,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 23:28:36,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 23:28:36,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-01 23:28:36,539 INFO L275 PluginConnector]: CDTParser initialized [2021-06-01 23:28:36,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-06-01 23:28:36,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25baf3c6/d31419cc3b0b466a8cd2126096295730/FLAGd2c1a9e1b [2021-06-01 23:28:36,994 INFO L306 CDTParser]: Found 1 translation units. [2021-06-01 23:28:36,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-06-01 23:28:36,994 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-01 23:28:37,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25baf3c6/d31419cc3b0b466a8cd2126096295730/FLAGd2c1a9e1b [2021-06-01 23:28:37,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d25baf3c6/d31419cc3b0b466a8cd2126096295730 [2021-06-01 23:28:37,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 23:28:37,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-01 23:28:37,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-01 23:28:37,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-01 23:28:37,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-01 23:28:37,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d52cd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37, skipping insertion in model container [2021-06-01 23:28:37,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-01 23:28:37,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-01 23:28:37,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-01 23:28:37,231 INFO L203 MainTranslator]: Completed pre-run [2021-06-01 23:28:37,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-01 23:28:37,253 INFO L208 MainTranslator]: Completed translation [2021-06-01 23:28:37,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37 WrapperNode [2021-06-01 23:28:37,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-01 23:28:37,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 23:28:37,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 23:28:37,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 23:28:37,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 23:28:37,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 23:28:37,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 23:28:37,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 23:28:37,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (1/1) ... [2021-06-01 23:28:37,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 23:28:37,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 23:28:37,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 23:28:37,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 23:28:37,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (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 [2021-06-01 23:28:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-01 23:28:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-01 23:28:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-01 23:28:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-01 23:28:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 23:28:37,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 23:28:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-01 23:28:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-01 23:28:37,417 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-01 23:28:37,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 23:28:37,597 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-01 23:28:37,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 11:28:37 BoogieIcfgContainer [2021-06-01 23:28:37,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 23:28:37,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 23:28:37,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 23:28:37,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 23:28:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.06 11:28:37" (1/3) ... [2021-06-01 23:28:37,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5e693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 11:28:37, skipping insertion in model container [2021-06-01 23:28:37,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.06 11:28:37" (2/3) ... [2021-06-01 23:28:37,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5e693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 11:28:37, skipping insertion in model container [2021-06-01 23:28:37,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 11:28:37" (3/3) ... [2021-06-01 23:28:37,616 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2021-06-01 23:28:37,621 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 23:28:37,621 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 23:28:37,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-01 23:28:37,622 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 23:28:37,636 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,637 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,637 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,637 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,637 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,637 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,637 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,638 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,638 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,638 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,638 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,638 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,640 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,640 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,640 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,640 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:28:37,643 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-01 23:28:37,659 INFO L255 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-01 23:28:37,733 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 23:28:37,733 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 23:28:37,733 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 23:28:37,733 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 23:28:37,733 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 23:28:37,733 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 23:28:37,733 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 23:28:37,734 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 23:28:37,767 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 23:28:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 23:28:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2098265043, now seen corresponding path program 1 times [2021-06-01 23:28:37,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 23:28:37,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218916026] [2021-06-01 23:28:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 23:28:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 23:28:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 23:28:37,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 23:28:37,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218916026] [2021-06-01 23:28:37,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218916026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 23:28:37,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 23:28:37,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 23:28:37,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039064025] [2021-06-01 23:28:37,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 23:28:37,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 23:28:37,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 23:28:37,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-01 23:28:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-01 23:28:37,913 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-01 23:28:37,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-06-01 23:28:37,914 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-01 23:28:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-01 23:28:37,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-01 23:28:37,979 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 23:28:37,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 23:28:37,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2092285394, now seen corresponding path program 1 times [2021-06-01 23:28:37,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 23:28:37,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808876890] [2021-06-01 23:28:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 23:28:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-01 23:28:37,993 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-01 23:28:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-01 23:28:38,003 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-01 23:28:38,017 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-01 23:28:38,018 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-01 23:28:38,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-01 23:28:38,025 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 23:28:38,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 11:28:38 BasicIcfg [2021-06-01 23:28:38,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 23:28:38,047 INFO L168 Benchmark]: Toolchain (without parser) took 1012.57 ms. Allocated memory is still 379.6 MB. Free memory was 342.8 MB in the beginning and 317.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.0 GB. [2021-06-01 23:28:38,048 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 379.6 MB. Free memory is still 360.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:28:38,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.06 ms. Allocated memory is still 379.6 MB. Free memory was 342.6 MB in the beginning and 359.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-06-01 23:28:38,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.46 ms. Allocated memory is still 379.6 MB. Free memory was 359.4 MB in the beginning and 362.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 23:28:38,053 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 ms. Allocated memory is still 379.6 MB. Free memory was 362.9 MB in the beginning and 362.9 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 23:28:38,054 INFO L168 Benchmark]: RCFGBuilder took 250.65 ms. Allocated memory is still 379.6 MB. Free memory was 362.9 MB in the beginning and 349.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-01 23:28:38,055 INFO L168 Benchmark]: TraceAbstraction took 434.28 ms. Allocated memory is still 379.6 MB. Free memory was 348.3 MB in the beginning and 317.8 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-06-01 23:28:38,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 379.6 MB. Free memory is still 360.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 220.06 ms. Allocated memory is still 379.6 MB. Free memory was 342.6 MB in the beginning and 359.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 70.46 ms. Allocated memory is still 379.6 MB. Free memory was 359.4 MB in the beginning and 362.9 MB in the end (delta: -3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.15 ms. Allocated memory is still 379.6 MB. Free memory was 362.9 MB in the beginning and 362.9 MB in the end (delta: 2.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 250.65 ms. Allocated memory is still 379.6 MB. Free memory was 362.9 MB in the beginning and 349.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 434.28 ms. Allocated memory is still 379.6 MB. Free memory was 348.3 MB in the beginning and 317.8 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 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: 35, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 34, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, 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: 30, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 5, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 34, positive: 25, positive conditional: 2, positive unconditional: 23, negative: 9, negative conditional: 2, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 29, Positive conditional cache size: 1, Positive unconditional cache size: 28, Negative cache size: 3, Negative conditional cache size: 1, Negative unconditional cache size: 2, SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 34, positive: 25, positive conditional: 2, positive unconditional: 23, negative: 9, negative conditional: 2, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 29, Positive conditional cache size: 1, Positive unconditional cache size: 28, Negative cache size: 3, Negative conditional cache size: 1, Negative unconditional cache size: 2, Eliminated conditions: 0 ], Maximal queried relation: 1, Independence queries for same thread: 1 - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 0; VAL [x=0] [L23] 0 pthread_t threadId; VAL [x=0] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=0] [L26] 0 x = 1 VAL [arg={0:0}, x=1] [L18] 1 x = 2 VAL [arg={0:0}, arg={0:0}, x=2] [L27] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=3] [L30] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=3] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 335.7ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.9ms, PartialOrderReductionTime: 80.0ms, 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, 25.4ms SatisfiabilityAnalysisTime, 49.4ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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...