/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 20:31:02,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 20:31:02,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 20:31:02,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 20:31:02,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 20:31:02,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 20:31:02,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 20:31:02,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 20:31:02,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 20:31:02,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 20:31:02,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 20:31:02,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 20:31:02,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 20:31:02,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 20:31:02,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 20:31:02,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 20:31:02,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 20:31:02,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 20:31:02,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 20:31:02,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 20:31:02,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 20:31:02,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 20:31:02,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 20:31:02,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 20:31:02,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 20:31:02,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 20:31:02,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 20:31:02,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 20:31:02,324 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-FA-NoLbe.epf [2021-03-10 20:31:02,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 20:31:02,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 20:31:02,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 20:31:02,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 20:31:02,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 20:31:02,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 20:31:02,365 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 20:31:02,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 20:31:02,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 20:31:02,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 20:31:02,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 20:31:02,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 20:31:02,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:31:02,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 20:31:02,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 20:31:02,373 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 20:31:02,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 20:31:02,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 20:31:02,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 20:31:02,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 20:31:02,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 20:31:02,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 20:31:02,641 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 20:31:02,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-03-10 20:31:02,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d47d66d/10d3fe63175d4aba88ae64dba6c346fa/FLAGef37e845e [2021-03-10 20:31:03,061 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 20:31:03,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-03-10 20:31:03,061 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:31:03,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d47d66d/10d3fe63175d4aba88ae64dba6c346fa/FLAGef37e845e [2021-03-10 20:31:03,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d47d66d/10d3fe63175d4aba88ae64dba6c346fa [2021-03-10 20:31:03,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 20:31:03,479 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 20:31:03,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 20:31:03,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 20:31:03,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 20:31:03,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec1510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03, skipping insertion in model container [2021-03-10 20:31:03,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 20:31:03,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 20:31:03,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:31:03,660 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 20:31:03,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:31:03,684 INFO L208 MainTranslator]: Completed translation [2021-03-10 20:31:03,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03 WrapperNode [2021-03-10 20:31:03,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 20:31:03,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 20:31:03,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 20:31:03,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 20:31:03,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 20:31:03,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 20:31:03,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 20:31:03,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 20:31:03,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (1/1) ... [2021-03-10 20:31:03,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 20:31:03,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 20:31:03,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 20:31:03,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 20:31:03,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (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 [2021-03-10 20:31:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 20:31:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 20:31:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 20:31:03,833 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-10 20:31:03,834 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-10 20:31:03,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 20:31:03,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 20:31:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 20:31:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 20:31:03,836 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 20:31:04,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 20:31:04,064 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-10 20:31:04,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:31:04 BoogieIcfgContainer [2021-03-10 20:31:04,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 20:31:04,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 20:31:04,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 20:31:04,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 20:31:04,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 08:31:03" (1/3) ... [2021-03-10 20:31:04,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b496a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:31:04, skipping insertion in model container [2021-03-10 20:31:04,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:03" (2/3) ... [2021-03-10 20:31:04,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b496a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:31:04, skipping insertion in model container [2021-03-10 20:31:04,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:31:04" (3/3) ... [2021-03-10 20:31:04,072 INFO L111 eAbstractionObserver]: Analyzing ICFG 09b-return-after-end.c [2021-03-10 20:31:04,089 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 20:31:04,090 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 20:31:04,093 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 20:31:04,093 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 20:31:04,137 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,137 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,137 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,137 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,137 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,138 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,138 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,138 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,138 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,139 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,139 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,139 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,139 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,139 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,140 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,140 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,141 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,142 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:04,144 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 20:31:04,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-10 20:31:04,187 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 20:31:04,187 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 20:31:04,187 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 20:31:04,187 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 20:31:04,188 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 20:31:04,188 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 20:31:04,188 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 20:31:04,188 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 20:31:04,199 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 57 flow [2021-03-10 20:31:04,215 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73 states, 71 states have (on average 1.8169014084507042) internal successors, (129), 72 states have internal predecessors, (129), 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) [2021-03-10 20:31:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 71 states have (on average 1.8169014084507042) internal successors, (129), 72 states have internal predecessors, (129), 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) [2021-03-10 20:31:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-10 20:31:04,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:31:04,226 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:31:04,227 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:31:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:31:04,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1645233736, now seen corresponding path program 1 times [2021-03-10 20:31:04,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:31:04,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662315925] [2021-03-10 20:31:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:31:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:31:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:31:04,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662315925] [2021-03-10 20:31:04,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:31:04,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 20:31:04,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605297797] [2021-03-10 20:31:04,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:31:04,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:31:04,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:31:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:31:04,430 INFO L87 Difference]: Start difference. First operand has 73 states, 71 states have (on average 1.8169014084507042) internal successors, (129), 72 states have internal predecessors, (129), 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) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-03-10 20:31:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:31:04,457 INFO L93 Difference]: Finished difference Result 85 states and 142 transitions. [2021-03-10 20:31:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:31:04,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 13 [2021-03-10 20:31:04,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:31:04,464 INFO L225 Difference]: With dead ends: 85 [2021-03-10 20:31:04,464 INFO L226 Difference]: Without dead ends: 31 [2021-03-10 20:31:04,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:31:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-03-10 20:31:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-03-10 20:31:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-03-10 20:31:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-03-10 20:31:04,488 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2021-03-10 20:31:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:31:04,488 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-03-10 20:31:04,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-03-10 20:31:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-03-10 20:31:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 20:31:04,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:31:04,489 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:31:04,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 20:31:04,490 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:31:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:31:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash -995223754, now seen corresponding path program 1 times [2021-03-10 20:31:04,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:31:04,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493889386] [2021-03-10 20:31:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:31:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-10 20:31:04,504 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-10 20:31:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-10 20:31:04,513 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-10 20:31:04,527 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-10 20:31:04,527 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-10 20:31:04,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 20:31:04,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 08:31:04 BasicIcfg [2021-03-10 20:31:04,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 20:31:04,549 INFO L168 Benchmark]: Toolchain (without parser) took 1072.97 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 233.0 MB in the beginning and 314.0 MB in the end (delta: -81.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:04,549 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:31:04,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.51 ms. Allocated memory is still 255.9 MB. Free memory was 232.6 MB in the beginning and 224.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:04,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.42 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 224.0 MB in the beginning and 353.0 MB in the end (delta: -128.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:04,551 INFO L168 Benchmark]: Boogie Preprocessor took 20.37 ms. Allocated memory is still 369.1 MB. Free memory was 353.0 MB in the beginning and 352.1 MB in the end (delta: 889.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:31:04,552 INFO L168 Benchmark]: RCFGBuilder took 294.67 ms. Allocated memory is still 369.1 MB. Free memory was 352.1 MB in the beginning and 340.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:04,552 INFO L168 Benchmark]: TraceAbstraction took 480.82 ms. Allocated memory is still 369.1 MB. Free memory was 339.7 MB in the beginning and 314.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:04,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 205.51 ms. Allocated memory is still 255.9 MB. Free memory was 232.6 MB in the beginning and 224.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.42 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 224.0 MB in the beginning and 353.0 MB in the end (delta: -128.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.37 ms. Allocated memory is still 369.1 MB. Free memory was 353.0 MB in the beginning and 352.1 MB in the end (delta: 889.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 294.67 ms. Allocated memory is still 369.1 MB. Free memory was 352.1 MB in the beginning and 340.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 480.82 ms. Allocated memory is still 369.1 MB. Free memory was 339.7 MB in the beginning and 314.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 1; VAL [x=1] [L16] 0 int y = 1; VAL [x=1, y=1] [L31] 0 pthread_t threadId; VAL [x=1, y=1] [L32] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=1, y=1] [L20] COND TRUE 1 \read(y) VAL [arg={0:0}, arg={0:0}, x=1, y=1] [L34] 0 y = 0 VAL [arg={0:0}, arg={0:0}, x=1, y=0] [L22] 1 x = y VAL [arg={0:0}, arg={0:0}, x=0, y=0] [L36] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=0, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 343.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.6ms, AutomataDifference: 50.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 9 SDslu, 11 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.6ms SsaConstructionTime, 27.9ms SatisfiabilityAnalysisTime, 81.9ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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...