/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:03:26,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:03:26,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:03:26,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:03:26,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:03:26,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:03:26,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:03:26,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:03:26,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:03:26,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:03:26,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:03:26,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:03:26,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:03:26,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:03:26,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:03:26,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:03:26,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:03:26,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:03:26,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:03:26,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:03:26,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:03:26,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:03:26,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:03:26,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:03:26,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:03:26,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:03:26,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:03:26,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:03:26,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:03:26,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:03:26,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:03:26,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:03:26,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:03:26,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:03:26,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:03:26,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:03:26,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:03:26,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:03:26,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:03:26,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:03:26,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:03:26,594 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:03:26,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:03:26,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:03:26,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:03:26,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:03:26,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:03:26,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:03:26,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:03:26,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:26,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:03:26,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:03:26,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:03:26,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:03:26,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:03:26,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 14:03:26,861 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 14:03:26,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-03-11 14:03:26,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44da4ea87/bfb7244cf721440381eefa2032cf8035/FLAG8299397d2 [2021-03-11 14:03:27,287 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 14:03:27,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/09b-return-after-end.c [2021-03-11 14:03:27,288 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:03:27,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44da4ea87/bfb7244cf721440381eefa2032cf8035/FLAG8299397d2 [2021-03-11 14:03:27,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44da4ea87/bfb7244cf721440381eefa2032cf8035 [2021-03-11 14:03:27,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:03:27,330 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 14:03:27,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:27,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 14:03:27,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 14:03:27,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5686f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27, skipping insertion in model container [2021-03-11 14:03:27,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 14:03:27,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 14:03:27,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:27,459 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 14:03:27,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:27,485 INFO L208 MainTranslator]: Completed translation [2021-03-11 14:03:27,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27 WrapperNode [2021-03-11 14:03:27,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:27,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:27,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:03:27,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:03:27,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:27,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:03:27,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:03:27,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:03:27,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... [2021-03-11 14:03:27,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:03:27,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:03:27,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:03:27,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:03:27,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 14:03:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 14:03:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 14:03:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 14:03:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 14:03:27,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:03:27,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:03:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 14:03:27,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 14:03:27,603 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:03:27,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:03:27,755 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 14:03:27,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:27 BoogieIcfgContainer [2021-03-11 14:03:27,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:03:27,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:03:27,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:03:27,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:03:27,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:03:27" (1/3) ... [2021-03-11 14:03:27,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ac3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:27, skipping insertion in model container [2021-03-11 14:03:27,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:27" (2/3) ... [2021-03-11 14:03:27,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ac3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:27, skipping insertion in model container [2021-03-11 14:03:27,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:27" (3/3) ... [2021-03-11 14:03:27,761 INFO L111 eAbstractionObserver]: Analyzing ICFG 09b-return-after-end.c [2021-03-11 14:03:27,764 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:03:27,765 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:03:27,767 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:03:27,767 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:03:27,779 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,781 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,782 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,782 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,783 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,783 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,783 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,783 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:27,785 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 14:03:27,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 14:03:27,823 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:03:27,823 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:03:27,824 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:03:27,824 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:03:27,824 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:03:27,824 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:03:27,824 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:03:27,824 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:03:27,830 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:03:27,836 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 26 transitions, 57 flow [2021-03-11 14:03:27,837 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 26 transitions, 57 flow [2021-03-11 14:03:27,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 57 flow [2021-03-11 14:03:27,866 INFO L129 PetriNetUnfolder]: 1/25 cut-off events. [2021-03-11 14:03:27,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 14:03:27,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 1/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2021-03-11 14:03:27,869 INFO L116 LiptonReduction]: Number of co-enabled transitions 112 [2021-03-11 14:03:28,347 INFO L131 LiptonReduction]: Checked pairs total: 161 [2021-03-11 14:03:28,347 INFO L133 LiptonReduction]: Total number of compositions: 19 [2021-03-11 14:03:28,351 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 9 transitions, 23 flow [2021-03-11 14:03:28,356 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-03-11 14:03:28,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:28,359 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-03-11 14:03:28,360 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:28,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:28,363 INFO L82 PathProgramCache]: Analyzing trace with hash 3459769, now seen corresponding path program 1 times [2021-03-11 14:03:28,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:28,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195858558] [2021-03-11 14:03:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:28,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:28,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:03:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:03:28,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195858558] [2021-03-11 14:03:28,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:28,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 14:03:28,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016320232] [2021-03-11 14:03:28,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:03:28,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:03:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:28,488 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:28,502 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2021-03-11 14:03:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:03:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-03-11 14:03:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:28,509 INFO L225 Difference]: With dead ends: 12 [2021-03-11 14:03:28,509 INFO L226 Difference]: Without dead ends: 9 [2021-03-11 14:03:28,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-03-11 14:03:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-03-11 14:03:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2021-03-11 14:03:28,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 4 [2021-03-11 14:03:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:28,530 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-03-11 14:03:28,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2021-03-11 14:03:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-03-11 14:03:28,531 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:28,531 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 14:03:28,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:03:28,532 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:28,533 INFO L82 PathProgramCache]: Analyzing trace with hash 107253876, now seen corresponding path program 1 times [2021-03-11 14:03:28,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:28,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331144928] [2021-03-11 14:03:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:28,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:28,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:03:28,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:28,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:03:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:03:28,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331144928] [2021-03-11 14:03:28,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:28,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 14:03:28,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121174210] [2021-03-11 14:03:28,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:03:28,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:03:28,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:28,583 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:28,590 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-03-11 14:03:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:03:28,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-03-11 14:03:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:28,593 INFO L225 Difference]: With dead ends: 11 [2021-03-11 14:03:28,593 INFO L226 Difference]: Without dead ends: 9 [2021-03-11 14:03:28,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-03-11 14:03:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-03-11 14:03:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-03-11 14:03:28,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2021-03-11 14:03:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:28,595 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-03-11 14:03:28,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-03-11 14:03:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 14:03:28,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:28,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 14:03:28,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:03:28,595 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:28,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:28,596 INFO L82 PathProgramCache]: Analyzing trace with hash -970100939, now seen corresponding path program 1 times [2021-03-11 14:03:28,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:28,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108337909] [2021-03-11 14:03:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:28,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:28,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:03:28,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:28,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:03:28,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:28,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:03:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:03:28,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108337909] [2021-03-11 14:03:28,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:28,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:03:28,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169645592] [2021-03-11 14:03:28,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:03:28,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:28,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:03:28,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:28,618 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:28,623 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-03-11 14:03:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:03:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-03-11 14:03:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:28,624 INFO L225 Difference]: With dead ends: 9 [2021-03-11 14:03:28,624 INFO L226 Difference]: Without dead ends: 8 [2021-03-11 14:03:28,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:03:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-03-11 14:03:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-03-11 14:03:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-03-11 14:03:28,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-03-11 14:03:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:28,628 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-03-11 14:03:28,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:03:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-03-11 14:03:28,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 14:03:28,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:28,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 14:03:28,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 14:03:28,628 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:28,629 INFO L82 PathProgramCache]: Analyzing trace with hash -969927959, now seen corresponding path program 2 times [2021-03-11 14:03:28,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:28,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959380411] [2021-03-11 14:03:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:03:28,643 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:03:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:03:28,655 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:03:28,668 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 14:03:28,668 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 14:03:28,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 14:03:28,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:03:28 BasicIcfg [2021-03-11 14:03:28,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:03:28,684 INFO L168 Benchmark]: Toolchain (without parser) took 1356.30 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 236.5 MB in the beginning and 275.0 MB in the end (delta: -38.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:28,685 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:28,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.65 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 235.9 MB in the beginning and 334.6 MB in the end (delta: -98.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:28,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.68 ms. Allocated memory is still 350.2 MB. Free memory was 334.6 MB in the beginning and 333.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:28,690 INFO L168 Benchmark]: Boogie Preprocessor took 15.99 ms. Allocated memory is still 350.2 MB. Free memory was 333.2 MB in the beginning and 332.2 MB in the end (delta: 941.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:28,690 INFO L168 Benchmark]: RCFGBuilder took 220.36 ms. Allocated memory is still 350.2 MB. Free memory was 332.2 MB in the beginning and 320.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:28,690 INFO L168 Benchmark]: TraceAbstraction took 925.58 ms. Allocated memory is still 350.2 MB. Free memory was 320.2 MB in the beginning and 275.0 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:28,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 155.65 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 235.9 MB in the beginning and 334.6 MB in the end (delta: -98.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.68 ms. Allocated memory is still 350.2 MB. Free memory was 334.6 MB in the beginning and 333.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.99 ms. Allocated memory is still 350.2 MB. Free memory was 333.2 MB in the beginning and 332.2 MB in the end (delta: 941.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 220.36 ms. Allocated memory is still 350.2 MB. Free memory was 332.2 MB in the beginning and 320.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 925.58 ms. Allocated memory is still 350.2 MB. Free memory was 320.2 MB in the beginning and 275.0 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 509.6ms, 29 PlacesBefore, 12 PlacesAfterwards, 26 TransitionsBefore, 9 TransitionsAfterwards, 112 CoEnabledTransitionPairs, 4 FixpointIterations, 8 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 161 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 123, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 80, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 80, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 123, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 80, unknown conditional: 0, unknown unconditional: 80] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = 1; [L16] 0 int y = 1; [L31] 0 pthread_t threadId; [L32] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=1, y=1] [L20] COND TRUE 1 \read(y) VAL [arg={0:0}, arg={0:0}, x=1, y=1] [L34] 0 y = 0 VAL [arg={0:0}, arg={0:0}, x=1, y=0] [L22] 1 x = y [L23] 1 return (void*) NULL; [L36] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=0, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 847.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 4.1ms, AutomataDifference: 52.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 531.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.9ms SsaConstructionTime, 33.1ms SatisfiabilityAnalysisTime, 85.8ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...