/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/14b-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 18:37:54,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 18:37:54,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 18:37:54,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 18:37:54,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 18:37:54,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 18:37:54,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 18:37:54,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 18:37:54,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 18:37:54,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 18:37:54,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 18:37:54,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 18:37:54,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 18:37:54,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 18:37:54,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 18:37:54,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 18:37:54,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 18:37:54,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 18:37:54,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 18:37:54,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 18:37:54,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 18:37:54,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 18:37:54,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 18:37:54,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 18:37:54,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 18:37:54,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 18:37:54,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 18:37:54,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 18:37:54,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 18:37:54,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 18:37:54,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 18:37:54,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 18:37:54,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 18:37:54,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 18:37:54,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 18:37:54,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 18:37:54,816 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 18:37:54,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 18:37:54,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 18:37:54,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 18:37:54,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 18:37:54,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 18:37:54,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 18:37:54,843 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 18:37:54,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 18:37:54,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 18:37:54,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 18:37:54,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 18:37:54,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 18:37:54,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 18:37:54,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 18:37:54,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 18:37:54,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 18:37:54,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 18:37:54,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:37:54,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 18:37:54,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 18:37:54,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 18:37:54,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 18:37:54,851 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 18:37:54,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 18:37:54,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 18:37:55,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 18:37:55,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 18:37:55,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 18:37:55,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 18:37:55,141 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 18:37:55,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-08-12 18:37:55,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b14cf9d9f/2d34df1b59a74e5e823bf56a0dc99bde/FLAG814d69e9d [2021-08-12 18:37:55,546 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 18:37:55,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-08-12 18:37:55,547 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 18:37:55,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b14cf9d9f/2d34df1b59a74e5e823bf56a0dc99bde/FLAG814d69e9d [2021-08-12 18:37:55,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b14cf9d9f/2d34df1b59a74e5e823bf56a0dc99bde [2021-08-12 18:37:55,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 18:37:55,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 18:37:56,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 18:37:56,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 18:37:56,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 18:37:56,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 06:37:55" (1/1) ... [2021-08-12 18:37:56,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d31e73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56, skipping insertion in model container [2021-08-12 18:37:56,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 06:37:55" (1/1) ... [2021-08-12 18:37:56,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 18:37:56,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 18:37:56,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 18:37:56,132 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 18:37:56,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 18:37:56,178 INFO L208 MainTranslator]: Completed translation [2021-08-12 18:37:56,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56 WrapperNode [2021-08-12 18:37:56,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 18:37:56,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 18:37:56,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 18:37:56,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 18:37:56,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 18:37:56,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 18:37:56,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 18:37:56,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 18:37:56,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (1/1) ... [2021-08-12 18:37:56,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 18:37:56,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 18:37:56,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 18:37:56,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 18:37:56,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (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 18:37:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 18:37:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-12 18:37:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-12 18:37:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-12 18:37:56,310 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-12 18:37:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 18:37:56,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 18:37:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 18:37:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 18:37:56,313 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 18:37:56,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 18:37:56,519 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-12 18:37:56,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:37:56 BoogieIcfgContainer [2021-08-12 18:37:56,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 18:37:56,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 18:37:56,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 18:37:56,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 18:37:56,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 06:37:55" (1/3) ... [2021-08-12 18:37:56,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a47e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:37:56, skipping insertion in model container [2021-08-12 18:37:56,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 06:37:56" (2/3) ... [2021-08-12 18:37:56,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a47e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:37:56, skipping insertion in model container [2021-08-12 18:37:56,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:37:56" (3/3) ... [2021-08-12 18:37:56,525 INFO L111 eAbstractionObserver]: Analyzing ICFG 14b-subsequent-blocks.c [2021-08-12 18:37:56,528 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 18:37:56,529 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 18:37:56,529 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 18:37:56,541 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,542 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,543 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,543 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,543 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,543 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,544 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,544 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,545 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,545 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 18:37:56,546 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 18:37:56,560 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 18:37:56,573 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 18:37:56,573 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 18:37:56,573 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 18:37:56,573 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 18:37:56,573 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 18:37:56,573 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 18:37:56,573 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 18:37:56,573 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 18:37:56,579 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 26 transitions, 57 flow [2021-08-12 18:37:56,605 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 18:37:56,608 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 18:37:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-12 18:37:56,612 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:37:56,612 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:37:56,613 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:37:56,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:37:56,616 INFO L82 PathProgramCache]: Analyzing trace with hash 713342842, now seen corresponding path program 1 times [2021-08-12 18:37:56,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:37:56,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298317799] [2021-08-12 18:37:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:37:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:37:56,782 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 18:37:56,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:37:56,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298317799] [2021-08-12 18:37:56,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298317799] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:37:56,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:37:56,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:37:56,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698284536] [2021-08-12 18:37:56,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 18:37:56,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:37:56,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 18:37:56,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 18:37:56,802 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 18:37:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:37:56,856 INFO L93 Difference]: Finished difference Result 90 states and 142 transitions. [2021-08-12 18:37:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 18:37:56,859 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 18:37:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:37:56,864 INFO L225 Difference]: With dead ends: 90 [2021-08-12 18:37:56,864 INFO L226 Difference]: Without dead ends: 30 [2021-08-12 18:37:56,867 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 18:37:56,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-12 18:37:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-12 18:37:56,888 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 18:37:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-08-12 18:37:56,890 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2021-08-12 18:37:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:37:56,890 INFO L482 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-08-12 18:37:56,890 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 18:37:56,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-08-12 18:37:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-12 18:37:56,891 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:37:56,891 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 18:37:56,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 18:37:56,891 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:37:56,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:37:56,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1658139655, now seen corresponding path program 1 times [2021-08-12 18:37:56,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:37:56,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655306383] [2021-08-12 18:37:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:37:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 18:37:56,902 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 18:37:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 18:37:56,908 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 18:37:56,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 18:37:56,919 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 18:37:56,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 18:37:56,922 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 18:37:56,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 06:37:56 BasicIcfg [2021-08-12 18:37:56,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 18:37:56,936 INFO L168 Benchmark]: Toolchain (without parser) took 936.69 ms. Allocated memory is still 250.6 MB. Free memory was 213.6 MB in the beginning and 187.7 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:56,936 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 250.6 MB. Free memory is still 231.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:37:56,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.37 ms. Allocated memory is still 250.6 MB. Free memory was 213.4 MB in the beginning and 232.9 MB in the end (delta: -19.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:56,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.90 ms. Allocated memory is still 250.6 MB. Free memory was 232.9 MB in the beginning and 231.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:56,937 INFO L168 Benchmark]: Boogie Preprocessor took 25.30 ms. Allocated memory is still 250.6 MB. Free memory was 231.2 MB in the beginning and 230.7 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:37:56,938 INFO L168 Benchmark]: RCFGBuilder took 262.23 ms. Allocated memory is still 250.6 MB. Free memory was 230.7 MB in the beginning and 216.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:56,938 INFO L168 Benchmark]: TraceAbstraction took 413.66 ms. Allocated memory is still 250.6 MB. Free memory was 216.5 MB in the beginning and 187.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-08-12 18:37:56,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 250.6 MB. Free memory is still 231.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 178.37 ms. Allocated memory is still 250.6 MB. Free memory was 213.4 MB in the beginning and 232.9 MB in the end (delta: -19.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.90 ms. Allocated memory is still 250.6 MB. Free memory was 232.9 MB in the beginning and 231.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.30 ms. Allocated memory is still 250.6 MB. Free memory was 231.2 MB in the beginning and 230.7 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 262.23 ms. Allocated memory is still 250.6 MB. Free memory was 230.7 MB in the beginning and 216.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 413.66 ms. Allocated memory is still 250.6 MB. Free memory was 216.5 MB in the beginning and 187.7 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 35]: 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 [L28] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=2] [L18] 1 x = 0 VAL [arg={0:0}, arg={0:0}, x=0] [L31] 0 x = x + 1 [L32] 0 x = x + 1 VAL [arg={0:0}, arg={0:0}, x=2] [L35] 0 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=2] - 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: 349.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.8ms, AutomataDifference: 77.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 16 SDslu, 22 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms 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: 14.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.4ms SsaConstructionTime, 25.8ms SatisfiabilityAnalysisTime, 65.6ms 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...