/usr/bin/java -Xmx8000000000 -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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:16:19,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:16:19,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:16:19,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:16:19,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:16:19,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:16:19,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:16:19,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:16:19,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:16:19,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:16:19,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:16:19,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 08:16:19,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:16:19,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:16:19,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:16:19,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:16:19,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:16:19,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:16:19,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:16:19,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:16:19,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:16:19,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:16:19,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:16:19,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:16:19,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 08:16:19,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 08:16:19,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 08:16:19,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 08:16:19,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 08:16:19,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 08:16:19,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 08:16:19,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 08:16:19,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 08:16:19,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:16:19,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:16:19,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:16:19,137 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-PN-NoLbe.epf [2021-06-13 08:16:19,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:16:19,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:16:19,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:16:19,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:16:19,180 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:16:19,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:16:19,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:16:19,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:16:19,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:16:19,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:16:19,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:16:19,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:16:19,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:16:19,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:16:19,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:16:19,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:16:19,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:16:19,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:16:19,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:16:19,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:16:19,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:16:19,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:16:19,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:16:19,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:16:19,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:16:19,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:16:19,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:16:19,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:16:19,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:16:19,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:16:19,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:16:19,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:16:19,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:16:19,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 08:16:19,505 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 08:16:19,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-06-13 08:16:19,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88aaba90e/5c442ac69e824bfc906c80cd45afbe3f/FLAGe6b37ab3c [2021-06-13 08:16:20,051 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 08:16:20,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/05-end-no-begin.c [2021-06-13 08:16:20,052 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:16:20,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88aaba90e/5c442ac69e824bfc906c80cd45afbe3f/FLAGe6b37ab3c [2021-06-13 08:16:20,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88aaba90e/5c442ac69e824bfc906c80cd45afbe3f [2021-06-13 08:16:20,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:16:20,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 08:16:20,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 08:16:20,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 08:16:20,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 08:16:20,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f98305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20, skipping insertion in model container [2021-06-13 08:16:20,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 08:16:20,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 08:16:20,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:16:20,720 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 08:16:20,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:16:20,788 INFO L208 MainTranslator]: Completed translation [2021-06-13 08:16:20,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20 WrapperNode [2021-06-13 08:16:20,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 08:16:20,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:16:20,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:16:20,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:16:20,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:16:20,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:16:20,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:16:20,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:16:20,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (1/1) ... [2021-06-13 08:16:20,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:16:20,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:16:20,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:16:20,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:16:20,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (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 [2021-06-13 08:16:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 08:16:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 08:16:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-13 08:16:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-13 08:16:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:16:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:16:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 08:16:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 08:16:20,926 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:16:21,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:16:21,107 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 08:16:21,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:16:21 BoogieIcfgContainer [2021-06-13 08:16:21,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:16:21,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:16:21,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:16:21,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:16:21,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 08:16:20" (1/3) ... [2021-06-13 08:16:21,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dc9c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:16:21, skipping insertion in model container [2021-06-13 08:16:21,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:20" (2/3) ... [2021-06-13 08:16:21,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dc9c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:16:21, skipping insertion in model container [2021-06-13 08:16:21,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:16:21" (3/3) ... [2021-06-13 08:16:21,115 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-end-no-begin.c [2021-06-13 08:16:21,140 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:16:21,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:16:21,141 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:16:21,176 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,177 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,177 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,177 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,177 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,177 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,177 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,178 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,178 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,178 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,178 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,178 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,180 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,180 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,180 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,180 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:21,189 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 08:16:21,215 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 08:16:21,234 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:16:21,235 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:16:21,235 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:16:21,235 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:16:21,235 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:16:21,235 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:16:21,235 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:16:21,235 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:16:21,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 26 transitions, 57 flow [2021-06-13 08:16:21,262 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-06-13 08:16:21,263 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:16:21,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 0/25 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. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-13 08:16:21,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 26 transitions, 57 flow [2021-06-13 08:16:21,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2021-06-13 08:16:21,274 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-06-13 08:16:21,274 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:16:21,274 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:16:21,275 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:16:21,275 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:16:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:16:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2098265043, now seen corresponding path program 1 times [2021-06-13 08:16:21,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:16:21,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317709454] [2021-06-13 08:16:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:16:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:16:21,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:21,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:16:21,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:21,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 08:16:21,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:21,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:16:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:16:21,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:16:21,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317709454] [2021-06-13 08:16:21,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317709454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:16:21,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:16:21,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:16:21,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910991861] [2021-06-13 08:16:21,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 08:16:21,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:16:21,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 08:16:21,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-13 08:16:21,440 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 26 [2021-06-13 08:16:21,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-06-13 08:16:21,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:16:21,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 26 [2021-06-13 08:16:21,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:16:21,472 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-06-13 08:16:21,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:16:21,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 1 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 27. Up to 6 conditions per place. [2021-06-13 08:16:21,474 INFO L132 encePairwiseOnDemand]: 21/26 looper letters, 1 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2021-06-13 08:16:21,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 61 flow [2021-06-13 08:16:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 08:16:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-13 08:16:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2021-06-13 08:16:21,485 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-06-13 08:16:21,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2021-06-13 08:16:21,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2021-06-13 08:16:21,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:16:21,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2021-06-13 08:16:21,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-06-13 08:16:21,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2021-06-13 08:16:21,494 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2021-06-13 08:16:21,496 INFO L185 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 4 states and 88 transitions. [2021-06-13 08:16:21,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 61 flow [2021-06-13 08:16:21,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:16:21,500 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 56 flow [2021-06-13 08:16:21,502 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-06-13 08:16:21,503 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-06-13 08:16:21,503 INFO L482 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 56 flow [2021-06-13 08:16:21,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-06-13 08:16:21,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:16:21,503 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:16:21,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:16:21,504 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:16:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:16:21,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2092285394, now seen corresponding path program 1 times [2021-06-13 08:16:21,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:16:21,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795376024] [2021-06-13 08:16:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:16:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:16:21,519 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:16:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 08:16:21,529 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 08:16:21,550 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 08:16:21,550 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 08:16:21,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:16:21,554 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:16:21,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:16:21 BasicIcfg [2021-06-13 08:16:21,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:16:21,578 INFO L168 Benchmark]: Toolchain (without parser) took 1033.17 ms. Allocated memory is still 199.2 MB. Free memory was 161.7 MB in the beginning and 136.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:21,579 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 180.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:16:21,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 199.2 MB. Free memory was 161.5 MB in the beginning and 181.6 MB in the end (delta: -20.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:21,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.32 ms. Allocated memory is still 199.2 MB. Free memory was 181.6 MB in the beginning and 180.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:21,586 INFO L168 Benchmark]: Boogie Preprocessor took 20.94 ms. Allocated memory is still 199.2 MB. Free memory was 180.1 MB in the beginning and 179.4 MB in the end (delta: 676.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:21,587 INFO L168 Benchmark]: RCFGBuilder took 256.70 ms. Allocated memory is still 199.2 MB. Free memory was 179.0 MB in the beginning and 166.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:21,588 INFO L168 Benchmark]: TraceAbstraction took 466.44 ms. Allocated memory is still 199.2 MB. Free memory was 165.9 MB in the beginning and 136.6 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:21,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 180.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.42 ms. Allocated memory is still 199.2 MB. Free memory was 161.5 MB in the beginning and 181.6 MB in the end (delta: -20.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.32 ms. Allocated memory is still 199.2 MB. Free memory was 181.6 MB in the beginning and 180.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.94 ms. Allocated memory is still 199.2 MB. Free memory was 180.1 MB in the beginning and 179.4 MB in the end (delta: 676.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 256.70 ms. Allocated memory is still 199.2 MB. Free memory was 179.0 MB in the beginning and 166.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 466.44 ms. Allocated memory is still 199.2 MB. Free memory was 165.9 MB in the beginning and 136.6 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 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}, x=1] [L18] 1 x = 2 VAL [arg={0:0}, arg={0:0}, x=2] [L27] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=3] [L30] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=3] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 321.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 68.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=1, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 26.6ms SatisfiabilityAnalysisTime, 53.4ms 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...