/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-Separate.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-dev-29289db [2021-06-05 12:56:21,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 12:56:21,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 12:56:21,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 12:56:21,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 12:56:21,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 12:56:21,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 12:56:21,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 12:56:21,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 12:56:21,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 12:56:21,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 12:56:21,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 12:56:21,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 12:56:21,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 12:56:21,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 12:56:21,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 12:56:21,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 12:56:21,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 12:56:21,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 12:56:21,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 12:56:21,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 12:56:21,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 12:56:21,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 12:56:21,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 12:56:21,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 12:56:21,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 12:56:21,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 12:56:21,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 12:56:21,619 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-Separate.epf [2021-06-05 12:56:21,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 12:56:21,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 12:56:21,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 12:56:21,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 12:56:21,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 12:56:21,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 12:56:21,642 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 12:56:21,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 12:56:21,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 12:56:21,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 12:56:21,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 12:56:21,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 12:56:21,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 12:56:21,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 12:56:21,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 12:56:21,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:56:21,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 12:56:21,645 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 12:56:21,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 12:56:21,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 12:56:21,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 12:56:21,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 12:56:21,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 12:56:21,973 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 12:56:21,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-06-05 12:56:22,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db9f7f8d/1cc56220d8a145bd9eec636026092490/FLAGfb21a9521 [2021-06-05 12:56:22,467 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 12:56:22,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-06-05 12:56:22,469 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:56:22,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db9f7f8d/1cc56220d8a145bd9eec636026092490/FLAGfb21a9521 [2021-06-05 12:56:22,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db9f7f8d/1cc56220d8a145bd9eec636026092490 [2021-06-05 12:56:22,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 12:56:22,868 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 12:56:22,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 12:56:22,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 12:56:22,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 12:56:22,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:22" (1/1) ... [2021-06-05 12:56:22,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6986e299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:22, skipping insertion in model container [2021-06-05 12:56:22,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:22" (1/1) ... [2021-06-05 12:56:22,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 12:56:22,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 12:56:23,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:56:23,050 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 12:56:23,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:56:23,070 INFO L208 MainTranslator]: Completed translation [2021-06-05 12:56:23,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23 WrapperNode [2021-06-05 12:56:23,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 12:56:23,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 12:56:23,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 12:56:23,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 12:56:23,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 12:56:23,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 12:56:23,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 12:56:23,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 12:56:23,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (1/1) ... [2021-06-05 12:56:23,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 12:56:23,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 12:56:23,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 12:56:23,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 12:56:23,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (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 [2021-06-05 12:56:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 12:56:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 12:56:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-05 12:56:23,180 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-05 12:56:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 12:56:23,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 12:56:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 12:56:23,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 12:56:23,183 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 12:56:23,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 12:56:23,393 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-05 12:56:23,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:23 BoogieIcfgContainer [2021-06-05 12:56:23,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 12:56:23,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 12:56:23,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 12:56:23,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 12:56:23,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:56:22" (1/3) ... [2021-06-05 12:56:23,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de62bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:23, skipping insertion in model container [2021-06-05 12:56:23,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:23" (2/3) ... [2021-06-05 12:56:23,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de62bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:23, skipping insertion in model container [2021-06-05 12:56:23,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:23" (3/3) ... [2021-06-05 12:56:23,400 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2021-06-05 12:56:23,413 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 12:56:23,413 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 12:56:23,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 12:56:23,414 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 12:56:23,455 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,455 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,456 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,456 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,456 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,456 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,456 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,457 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,457 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,457 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,457 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,457 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,459 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,459 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,460 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,460 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:56:23,466 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 12:56:23,485 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 12:56:23,516 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:56:23,516 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:56:23,516 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:56:23,517 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:56:23,517 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:56:23,517 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:56:23,517 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:56:23,517 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:56:23,527 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 57 flow [2021-06-05 12:56:23,544 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66 states, 64 states have (on average 1.640625) internal successors, (105), 65 states have internal predecessors, (105), 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) [2021-06-05 12:56:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.640625) internal successors, (105), 65 states have internal predecessors, (105), 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) [2021-06-05 12:56:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 12:56:23,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:23,554 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:56:23,554 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2098265043, now seen corresponding path program 1 times [2021-06-05 12:56:23,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:23,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907906059] [2021-06-05 12:56:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:56:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:56:23,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:56:23,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907906059] [2021-06-05 12:56:23,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907906059] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:56:23,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:56:23,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 12:56:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169000712] [2021-06-05 12:56:23,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 12:56:23,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:56:23,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 12:56:23,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 12:56:23,783 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.640625) internal successors, (105), 65 states have internal predecessors, (105), 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 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) [2021-06-05 12:56:23,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:56:23,843 INFO L93 Difference]: Finished difference Result 85 states and 133 transitions. [2021-06-05 12:56:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 12:56:23,845 INFO L78 Accepts]: Start accepts. 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) Word has length 16 [2021-06-05 12:56:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:56:23,851 INFO L225 Difference]: With dead ends: 85 [2021-06-05 12:56:23,852 INFO L226 Difference]: Without dead ends: 28 [2021-06-05 12:56:23,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 12:56:23,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-06-05 12:56:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-06-05 12:56:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 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) [2021-06-05 12:56:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-06-05 12:56:23,881 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2021-06-05 12:56:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:56:23,881 INFO L482 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-06-05 12:56:23,881 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) [2021-06-05 12:56:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-06-05 12:56:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 12:56:23,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:56:23,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:56:23,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 12:56:23,883 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:56:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:56:23,884 INFO L82 PathProgramCache]: Analyzing trace with hash -583370070, now seen corresponding path program 1 times [2021-06-05 12:56:23,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:56:23,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793243067] [2021-06-05 12:56:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:56:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:56:23,897 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:56:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 12:56:23,906 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 12:56:23,922 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 12:56:23,922 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 12:56:23,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 12:56:23,925 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 12:56:23,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:56:23 BasicIcfg [2021-06-05 12:56:23,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 12:56:23,944 INFO L168 Benchmark]: Toolchain (without parser) took 1076.13 ms. Allocated memory is still 337.6 MB. Free memory was 300.7 MB in the beginning and 272.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:23,945 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 337.6 MB. Free memory was 319.0 MB in the beginning and 318.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:23,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.08 ms. Allocated memory is still 337.6 MB. Free memory was 300.5 MB in the beginning and 316.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:23,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.98 ms. Allocated memory is still 337.6 MB. Free memory was 316.8 MB in the beginning and 315.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:23,946 INFO L168 Benchmark]: Boogie Preprocessor took 12.71 ms. Allocated memory is still 337.6 MB. Free memory was 315.4 MB in the beginning and 314.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:56:23,947 INFO L168 Benchmark]: RCFGBuilder took 283.29 ms. Allocated memory is still 337.6 MB. Free memory was 314.4 MB in the beginning and 301.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:23,947 INFO L168 Benchmark]: TraceAbstraction took 547.70 ms. Allocated memory is still 337.6 MB. Free memory was 300.8 MB in the beginning and 272.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 12:56:23,950 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 337.6 MB. Free memory was 319.0 MB in the beginning and 318.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 202.08 ms. Allocated memory is still 337.6 MB. Free memory was 300.5 MB in the beginning and 316.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.98 ms. Allocated memory is still 337.6 MB. Free memory was 316.8 MB in the beginning and 315.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.71 ms. Allocated memory is still 337.6 MB. Free memory was 315.4 MB in the beginning and 314.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 283.29 ms. Allocated memory is still 337.6 MB. Free memory was 314.4 MB in the beginning and 301.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 547.70 ms. Allocated memory is still 337.6 MB. Free memory was 300.8 MB in the beginning and 272.5 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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}, 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 with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 409.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 85.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 20 SDslu, 28 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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: 15.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 30.8ms SatisfiabilityAnalysisTime, 88.4ms 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...