/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:02:01,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:02:01,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:02:01,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:02:01,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:02:01,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:02:01,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:02:01,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:02:01,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:02:01,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:02:01,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:02:01,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:02:01,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:02:01,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:02:01,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:02:01,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:02:01,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:02:01,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:02:01,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:02:01,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:02:01,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:02:01,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:02:01,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:02:01,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:02:01,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 14:02:01,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 14:02:01,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 14:02:01,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 14:02:01,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 14:02:01,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 14:02:01,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:02:01,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:02:01,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:02:01,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:02:01,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:02:01,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:02:01,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:02:01,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:02:01,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:02:01,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:02:01,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:02:01,355 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-SemanticLbe.epf [2021-03-11 14:02:01,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:02:01,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:02:01,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:02:01,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:02:01,392 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:02:01,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:02:01,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:02:01,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:02:01,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:02:01,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:02:01,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:02:01,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:02:01,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:02:01,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:02:01,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:02:01,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:02:01,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:02:01,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:02:01,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:02:01,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:02:01,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:02:01,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:02:01,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:02:01,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:02:01,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:02:01,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:02:01,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:02:01,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:02:01,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:02:01,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:02:01,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:02:01,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:02:01,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 14:02:01,696 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 14:02:01,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2021-03-11 14:02:01,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdc8f1ea/e729deeb3f9e4e4e919a86a27898429f/FLAG12be1b48f [2021-03-11 14:02:02,082 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 14:02:02,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/predecessorInAtomicBlockBug.c [2021-03-11 14:02:02,083 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:02:02,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdc8f1ea/e729deeb3f9e4e4e919a86a27898429f/FLAG12be1b48f [2021-03-11 14:02:02,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bdc8f1ea/e729deeb3f9e4e4e919a86a27898429f [2021-03-11 14:02:02,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:02:02,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 14:02:02,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 14:02:02,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 14:02:02,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 14:02:02,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382f83e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02, skipping insertion in model container [2021-03-11 14:02:02,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 14:02:02,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 14:02:02,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:02:02,633 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 14:02:02,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:02:02,647 INFO L208 MainTranslator]: Completed translation [2021-03-11 14:02:02,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02 WrapperNode [2021-03-11 14:02:02,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 14:02:02,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:02:02,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:02:02,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:02:02,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:02:02,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:02:02,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:02:02,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:02:02,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (1/1) ... [2021-03-11 14:02:02,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:02:02,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:02:02,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:02:02,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:02:02,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (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 [2021-03-11 14:02:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 14:02:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 14:02:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 14:02:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 14:02:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 14:02:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:02:02,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:02:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 14:02:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 14:02:02,800 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:02:02,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:02:02,986 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 14:02:02,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:02:02 BoogieIcfgContainer [2021-03-11 14:02:02,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:02:02,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:02:02,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:02:02,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:02:02,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:02:02" (1/3) ... [2021-03-11 14:02:02,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6f2197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:02:02, skipping insertion in model container [2021-03-11 14:02:02,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:02" (2/3) ... [2021-03-11 14:02:02,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6f2197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:02:02, skipping insertion in model container [2021-03-11 14:02:02,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:02:02" (3/3) ... [2021-03-11 14:02:02,993 INFO L111 eAbstractionObserver]: Analyzing ICFG predecessorInAtomicBlockBug.c [2021-03-11 14:02:02,997 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:02:02,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:02:03,000 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:02:03,000 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:02:03,015 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,016 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,017 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,017 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,017 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,017 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,019 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,019 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,019 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,019 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:03,022 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 14:02:03,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 14:02:03,071 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:02:03,071 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:02:03,071 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:02:03,071 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:02:03,071 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:02:03,071 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:02:03,071 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:02:03,071 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:02:03,080 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:02:03,088 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 22 transitions, 49 flow [2021-03-11 14:02:03,090 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 22 transitions, 49 flow [2021-03-11 14:02:03,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 49 flow [2021-03-11 14:02:03,110 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-11 14:02:03,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 14:02:03,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 14:02:03,112 INFO L116 LiptonReduction]: Number of co-enabled transitions 70 [2021-03-11 14:02:03,779 INFO L131 LiptonReduction]: Checked pairs total: 69 [2021-03-11 14:02:03,779 INFO L133 LiptonReduction]: Total number of compositions: 16 [2021-03-11 14:02:03,786 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 7 transitions, 19 flow [2021-03-11 14:02:03,791 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-03-11 14:02:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-03-11 14:02:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-03-11 14:02:03,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:03,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-03-11 14:02:03,796 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash 94824, now seen corresponding path program 1 times [2021-03-11 14:02:03,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:03,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153204894] [2021-03-11 14:02:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:03,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:03,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:03,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153204894] [2021-03-11 14:02:03,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:03,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 14:02:03,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894969819] [2021-03-11 14:02:03,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:02:03,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:03,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:02:03,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:02:03,915 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-03-11 14:02:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:03,934 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-03-11 14:02:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:02:03,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-03-11 14:02:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:03,940 INFO L225 Difference]: With dead ends: 12 [2021-03-11 14:02:03,940 INFO L226 Difference]: Without dead ends: 7 [2021-03-11 14:02:03,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:02:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-03-11 14:02:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-03-11 14:02:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-03-11 14:02:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-03-11 14:02:03,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 3 [2021-03-11 14:02:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:03,962 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-03-11 14:02:03,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-03-11 14:02:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-03-11 14:02:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-03-11 14:02:03,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:03,962 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-03-11 14:02:03,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:02:03,963 INFO L428 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:03,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2939415, now seen corresponding path program 1 times [2021-03-11 14:02:03,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:03,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516548166] [2021-03-11 14:02:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:02:03,974 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:02:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:02:03,981 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:02:03,992 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 14:02:03,992 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 14:02:03,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:02:04,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:02:04 BasicIcfg [2021-03-11 14:02:04,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:02:04,007 INFO L168 Benchmark]: Toolchain (without parser) took 1505.37 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 232.9 MB in the beginning and 288.6 MB in the end (delta: -55.8 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:04,008 INFO L168 Benchmark]: CDTParser took 0.11 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. [2021-03-11 14:02:04,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.23 ms. Allocated memory is still 255.9 MB. Free memory was 231.8 MB in the beginning and 223.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:04,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.25 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 223.4 MB in the beginning and 346.3 MB in the end (delta: -122.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:04,009 INFO L168 Benchmark]: Boogie Preprocessor took 19.42 ms. Allocated memory is still 362.8 MB. Free memory was 346.3 MB in the beginning and 345.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:02:04,010 INFO L168 Benchmark]: RCFGBuilder took 265.59 ms. Allocated memory is still 362.8 MB. Free memory was 345.0 MB in the beginning and 334.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:04,010 INFO L168 Benchmark]: TraceAbstraction took 1017.51 ms. Allocated memory is still 362.8 MB. Free memory was 333.4 MB in the beginning and 288.6 MB in the end (delta: 44.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:04,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 141.23 ms. Allocated memory is still 255.9 MB. Free memory was 231.8 MB in the beginning and 223.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.25 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 223.4 MB in the beginning and 346.3 MB in the end (delta: -122.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.42 ms. Allocated memory is still 362.8 MB. Free memory was 346.3 MB in the beginning and 345.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 265.59 ms. Allocated memory is still 362.8 MB. Free memory was 345.0 MB in the beginning and 334.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1017.51 ms. Allocated memory is still 362.8 MB. Free memory was 333.4 MB in the beginning and 288.6 MB in the end (delta: 44.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 688.9ms, 26 PlacesBefore, 11 PlacesAfterwards, 22 TransitionsBefore, 7 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 69 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 45, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 45, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 56, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 45, unknown conditional: 0, unknown unconditional: 45] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - CounterExampleResult [Line: 19]: assertion can be violated assertion can be violated We found a FailurePath: [L16] 0 int x = 0; [L24] 0 pthread_t threadId; [L25] FCALL, FORK 0 pthread_create(&threadId, NULL, & foo, NULL) VAL [arg={0:0}, x=0] [L27] 0 x = x - 1 VAL [arg={0:0}, x=-1] [L19] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 924.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 4.5ms, AutomataDifference: 37.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 719.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 10.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.8ms SsaConstructionTime, 18.3ms SatisfiabilityAnalysisTime, 31.2ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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...