/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 18:37:50,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 18:37:50,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 18:37:50,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 18:37:50,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 18:37:50,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 18:37:50,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 18:37:50,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 18:37:50,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 18:37:50,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 18:37:50,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 18:37:50,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 18:37:50,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 18:37:50,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 18:37:50,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 18:37:50,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 18:37:50,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 18:37:50,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 18:37:50,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 18:37:50,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 18:37:50,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 18:37:51,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 18:37:51,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 18:37:51,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 18:37:51,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 18:37:51,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 18:37:51,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 18:37:51,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 18:37:51,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 18:37:51,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 18:37:51,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 18:37:51,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 18:37:51,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 18:37:51,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 18:37:51,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 18:37:51,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 18:37:51,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-12 18:37:51,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 18:37:51,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 18:37:51,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 18:37:51,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 18:37:51,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 18:37:51,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 18:37:51,064 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 18:37:51,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 18:37:51,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 18:37:51,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 18:37:51,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 18:37:51,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 18:37:51,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 18:37:51,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 18:37:51,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:37:51,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 18:37:51,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 18:37:51,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 18:37:51,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 18:37:51,067 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 18:37:51,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 18:37:51,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 18:37:51,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 18:37:51,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 18:37:51,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 18:37:51,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 18:37:51,386 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 18:37:51,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-08-12 18:37:51,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa004887/28be8771eb064ebcb7ddb6949f697ffa/FLAG1a207e9f0 [2021-08-12 18:37:51,832 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 18:37:51,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11b-double-end.c [2021-08-12 18:37:51,832 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 18:37:51,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa004887/28be8771eb064ebcb7ddb6949f697ffa/FLAG1a207e9f0 [2021-08-12 18:37:51,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aa004887/28be8771eb064ebcb7ddb6949f697ffa [2021-08-12 18:37:51,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 18:37:51,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 18:37:51,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 18:37:51,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 18:37:51,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 18:37:51,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 06:37:51" (1/1) ... [2021-08-12 18:37:51,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17556044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:51, skipping insertion in model container [2021-08-12 18:37:51,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 06:37:51" (1/1) ... [2021-08-12 18:37:51,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 18:37:51,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 18:37:52,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 18:37:52,013 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 18:37:52,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 18:37:52,037 INFO L208 MainTranslator]: Completed translation [2021-08-12 18:37:52,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52 WrapperNode [2021-08-12 18:37:52,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 18:37:52,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 18:37:52,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 18:37:52,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 18:37:52,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 18:37:52,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 18:37:52,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 18:37:52,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 18:37:52,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (1/1) ... [2021-08-12 18:37:52,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 18:37:52,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 18:37:52,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 18:37:52,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 18:37:52,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (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 [2021-08-12 18:37:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 18:37:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-12 18:37:52,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-12 18:37:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-12 18:37:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-12 18:37:52,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 18:37:52,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 18:37:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 18:37:52,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 18:37:52,204 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 18:37:52,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 18:37:52,353 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-12 18:37:52,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:37:52 BoogieIcfgContainer [2021-08-12 18:37:52,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 18:37:52,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 18:37:52,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 18:37:52,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 18:37:52,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 06:37:51" (1/3) ... [2021-08-12 18:37:52,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65591ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:37:52, skipping insertion in model container [2021-08-12 18:37:52,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:52" (2/3) ... [2021-08-12 18:37:52,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65591ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:37:52, skipping insertion in model container [2021-08-12 18:37:52,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:37:52" (3/3) ... [2021-08-12 18:37:52,359 INFO L111 eAbstractionObserver]: Analyzing ICFG 11b-double-end.c [2021-08-12 18:37:52,363 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 18:37:52,363 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 18:37:52,363 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 18:37:52,375 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,375 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,375 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,375 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,375 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,375 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,376 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,376 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,376 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,376 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,376 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,376 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,378 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,378 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,378 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,378 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:52,380 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 18:37:52,413 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 18:37:52,424 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 18:37:52,425 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 18:37:52,425 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 18:37:52,425 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 18:37:52,425 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 18:37:52,425 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 18:37:52,425 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 18:37:52,425 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 18:37:52,446 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 57 flow [2021-08-12 18:37:52,456 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) [2021-08-12 18:37:52,458 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) [2021-08-12 18:37:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-12 18:37:52,466 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:37:52,466 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:37:52,466 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:37:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:37:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1241426886, now seen corresponding path program 1 times [2021-08-12 18:37:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:37:52,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493102290] [2021-08-12 18:37:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:37:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:37:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:37:52,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:37:52,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493102290] [2021-08-12 18:37:52,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493102290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:37:52,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:37:52,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:37:52,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292566333] [2021-08-12 18:37:52,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 18:37:52,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:37:52,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 18:37:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 18:37:52,697 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) [2021-08-12 18:37:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:37:52,748 INFO L93 Difference]: Finished difference Result 90 states and 142 transitions. [2021-08-12 18:37:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 18:37:52,750 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 [2021-08-12 18:37:52,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:37:52,756 INFO L225 Difference]: With dead ends: 90 [2021-08-12 18:37:52,756 INFO L226 Difference]: Without dead ends: 30 [2021-08-12 18:37:52,758 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 18:37:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-12 18:37:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-12 18:37:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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) [2021-08-12 18:37:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-08-12 18:37:52,778 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2021-08-12 18:37:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:37:52,779 INFO L482 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-08-12 18:37:52,779 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) [2021-08-12 18:37:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-08-12 18:37:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-12 18:37:52,780 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:37:52,780 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:37:52,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 18:37:52,780 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:37:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:37:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash 548272707, now seen corresponding path program 1 times [2021-08-12 18:37:52,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:37:52,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145154706] [2021-08-12 18:37:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:37:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 18:37:52,803 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 18:37:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 18:37:52,824 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 18:37:52,841 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 18:37:52,841 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 18:37:52,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 18:37:52,844 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 18:37:52,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 06:37:52 BasicIcfg [2021-08-12 18:37:52,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 18:37:52,866 INFO L168 Benchmark]: Toolchain (without parser) took 998.23 ms. Allocated memory is still 222.3 MB. Free memory was 185.9 MB in the beginning and 159.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:52,867 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 222.3 MB. Free memory is still 203.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:37:52,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.48 ms. Allocated memory is still 222.3 MB. Free memory was 185.5 MB in the beginning and 205.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:52,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.23 ms. Allocated memory is still 222.3 MB. Free memory was 204.4 MB in the beginning and 203.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:52,869 INFO L168 Benchmark]: Boogie Preprocessor took 17.95 ms. Allocated memory is still 222.3 MB. Free memory was 203.4 MB in the beginning and 202.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:52,871 INFO L168 Benchmark]: RCFGBuilder took 270.57 ms. Allocated memory is still 222.3 MB. Free memory was 202.1 MB in the beginning and 189.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:52,871 INFO L168 Benchmark]: TraceAbstraction took 509.70 ms. Allocated memory is still 222.3 MB. Free memory was 188.7 MB in the beginning and 159.3 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:52,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 222.3 MB. Free memory is still 203.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 169.48 ms. Allocated memory is still 222.3 MB. Free memory was 185.5 MB in the beginning and 205.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.23 ms. Allocated memory is still 222.3 MB. Free memory was 204.4 MB in the beginning and 203.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.95 ms. Allocated memory is still 222.3 MB. Free memory was 203.4 MB in the beginning and 202.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 270.57 ms. Allocated memory is still 222.3 MB. Free memory was 202.1 MB in the beginning and 189.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 509.70 ms. Allocated memory is still 222.3 MB. Free memory was 188.7 MB in the beginning and 159.3 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: 32]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; VAL [x=-1] [L23] 0 pthread_t threadId; VAL [x=-1] [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 VAL [arg={0:0}, arg={0:0}, x=1] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L29] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=1] [L32] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=1] - 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: 419.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.4ms, AutomataDifference: 74.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 11 SDslu, 44 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms 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: 11.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 59.5ms SatisfiabilityAnalysisTime, 77.5ms 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...